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Best Carriage Screws & Bolts - Buying Guide

Last Updated: 11/16/2018

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Bestselling Carriage Screws & Bolts on Amazon

  1. Genie- 100% OEM Genie/WD Corp OEM: Genie 20414R Carriage for Screw Drive Operators
  2. Genie 34107R.S Screw Drive Carriage
  3. 6-pack - Recessed Pan D-ring Trailer Tie Downs (6,000 Lb. Capacity) and Heavy Backer Plates, Includi...
  4. 4-pack - Recessed Pan D-ring Trailer Tie Downs (6,000 Lb. Capacity) and Heavy Backer Plates, Includi...
  5. Genie 37845R.S Garage Door Opener Carriage Assembly
  6. Ten (10) 5/16-18 x 3/4" Long Carriage Bolts Set w/Nuts & Washers (BCP297)
  7. Hard-to-Find Fastener 014973453671 Carriage Bolts, 5/16-18 x 3/4, Piece-25
  8. Makerbeam M3 Bolts with Square Head, 12mm 100 pcs and 25mm 25pcs
  9. Prime-Line 9062832 Carriage Bolts, 5/16 in.-18 X 1 in., A307 Grade A Zinc Plated Steel, 100-Pack
  10. 4 Sign Mounting Hardware Carriage Bolt with Security Nut 5/16-18 X 2" for U Channel Post

  #1

Genie- 100% OEM Genie/WD Corp OEM: Genie 20414R Carriage for Screw Drive Operators

Model: Genie 20414R Carriage for Screw Drive Op   |    Mpn: Genie 20414R Carriage for Screw Drive Op   |    Ean: 0753182401836   |    PartNumber: Genie 20414R Carriage for Screw Drive Op   |   Asin: B000JFFEFW

Compatible models listed below: compatible with the following models: gs980/9800/880/8800, gs820/8200/7200/850/800, pro82/98/88/90, pro83/93, pro88s/98s, pro83/93, cm7500/8500/7500s/8500s, SD series, 9500/9000/8000/2500/5000/10000, the GXL/GX/g series and the IS series.

Features

  • Direct manufactured oem genie part- screw drive assembly
  • New part- replaces 20414r, 34107r
  • Also works for models: 25589s, 25589c, 25589r, 20073r, 24357r
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Brand: Genie- 100% OEM Genie/WD Corp   |   Manufacturer: Genie Garage Door Operators

Item Dimensions: 3 x 4 x 4 inches (7.6 x 10.2 x 10.2 cm)   |   Package Dimensions: 1.2 x 2.35 x 4.6 inches (3.0 x 6.0 x 11.7 cm)

Amazon Price: Too low to display | as of 11/16/2018(5:31am pst)
Availibility: Usually ships in 24 hours
List Price: $16.29

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  #2

Genie 34107R.S Screw Drive Carriage

Model: 20414R 34107R.S 36179R.S   |    Mpn: 36179R   |    Ean: 7147905982055   |    PartNumber: 36179R   |   Asin: B000CST1L4

For Genie screw-drives with magnetic limit switches,will not work with moveable limits.(moveable limit carriage #25589R).Compatible with all Excelarator models.Genie original part

Features

  • Original Genie Screw Drive carriage
  • Compatible with magnetic switches
  • Compatible with toggle limit switches
  • NEW MODEL NUMBER 36179R.S replaces 34107R.S
  • Replaces part numbers 36179R.S, 25589R, 20073R, 18656R, 20414R, 24357R, 34107R
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Brand: Genie   |   Manufacturer: GENIE

Package Dimensions: 2.5 x 2.8 x 4.2 inches (6.4 x 7.1 x 10.7 cm)

Amazon Price: Too low to display | as of 11/16/2018(5:31am pst)
Availibility:
List Price: $15.35

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  #3

6-pack - Recessed Pan D-ring Trailer Tie Downs (6,000 Lb. Capacity) and Heavy Backer Plates, Including Mounting Hardware (Complete Set: 24 Carriage Bolts, Washers and Nylon Lock Nuts)

Model: DR6000-P-6PK-HW   |    Mpn: DR6000-P-6PK-HW   |    Ean: 0751871100022   |    PartNumber: DR6000-P-6PK-HW   |   Asin: B014VPXQDW

These tie-downs are for securing all of types of light or heavy loads and/or equipment. When installed, the surface is flush with the bed of your truck or trailer. Each tie-down D-ring includes a large backer plate that helps to solidify and protect the bed material, while adding strength and rigidity. Included in this set: 6 - Heavy-Duty (6,000 pound rating) recessed pan D-rings 6 - Over-sized backer plates (6 1/2" x 6 1/2") 24 - 3/8" x 2 1/2" Grade 5, zinc-plated, carriage bolts 24 - 3/8" zinc-plated flat washers 24 - 3/8" Grade 8, zinc-plated, nylon lock nuts Detailed DIY installation guide Weather Resistant Zinc Plating: This set of D-Rings and all of the included hardware are zinc-plated for corrosion resistance and excellent protection from the elements. Heavy-Duty Construction for the Toughest Hauling Jobs: This set is simple enough to handle small tie-down jobs and tough enough to handle larger loads. Each D-Ring has a load rating of 6,000 pounds. Our large (6 1/2" x 6 1/2") heavy-duty backer plate adds additional protection and rigidity, preventing tear-through of your bed material. High-quality mounting hardware is made from tough Grade 5 and Grade 8 steel. Nylon-insert lock nuts assures your mounting will stay tight even with road vibrations. The 2 1/2" carriage bolts can accommodate truck and trailer beds up to 1 5/8" thick. Includes DIY Easy-To-Follow Installation Guide We've included an installation guide that helps to walk you through the installation process, including recommended hole sizes, tool sizes and layout guidelines. For easiest installation, we recommend having the following tools: Electric Drill 1/2" drill bit (15/32" could work, but requires more precision) 3 1/2" whole saw (3 1/4" could work, but requires some extra routing/chiseling) 9/16" wrench (a deep socket or ratchet wrench makes things go easier/quicker)

Features

  • Includes zinc-plated carriage bolts, washers and lock nuts for mounting, save a trip to the hardware
  • All parts and hardware are zinc plated for corrosion resistance.
  • Over-sized back-plate for extra strength and rigidity.
  • 3/8 x 2 1/2 Grade 5 carriage bolts provide strength and low-profile mount.
  • 3/8 Grade 8 Nylon insert lock nuts assure nuts won't vibrate loose.
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Brand: Farm Tough Tools   |   Manufacturer: Farm Tough Tools

Package Dimensions: 5.5 x 5.5 x 8 inches (14.0 x 14.0 x 20.3 cm)

Amazon Price: $53.75 | as of 11/16/2018(5:31am pst)
Availibility: Usually ships in 24 hours
List Price: $53.75

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  #4

4-pack - Recessed Pan D-ring Trailer Tie Downs (6,000 Lb. Capacity) and Heavy Backer Plates, Including Mounting Hardware (Complete Set: 16 Carriage Bolts, Washers and Nylon Lock Nuts)

Model: DR6000-P-4PK-HW   |    Mpn: FBA_DR6000-P-4PK-HW   |    Ean: 0751871100015   |    PartNumber: FBA_DR6000-P-4PK-HW   |   Asin: B013JILTKO

Features

  • 4 complete sets of D-rings, backing plates and 2 1/2" hardware kits. Both components are zinc coated to inhibit rust and corrosion. The d-rings have square holes punched for receiving carriage bolts, providing a smooth and relatively trip free surface. When in use the ring portion raises for application and lies down when not in use, thus creating a flush surface. It is plenty strong and is able to receive multiple tie-down straps simultaneously.
  • Each D-ring has a 6,000 lb straight pull capacity. RATED CAPACITY: Also known as assembly capacity or break strength is the minimum load a complete assembly can withstand before failure in a laboratory pull test when the product is NEW. WORKING LOAD LIMIT: The maximum load weight a tie-down should be subjected to during normal use. To assist in making the proper tie-down choice the Federal D.O.T. requires the W.L.L. to be 1/3 of the Rated Capacity.
  • SPECIFICATIONS of d-ring: 1) The base measures 5 x 4-1/2. 2) Hole pattern is 3 x 3-1/2 on centers. Recessed dimension is 3 diameter with a flat edge. 3) The 7/16 diameter ring measures 1-3/4 center. 4) The ring pivots on a 5/16 threaded stud. 5) The pan has a 1/4 drainage hole. HARDWARE: This listing comes with four (4) hardware kits, enough to complete the installation. Each kit comes with 4 - 3/8 x 2-1/2 long carriage bolts, 4 - fender washers, and 4 - 3/8 nylon locking nuts.
  • BACKING PLATE is used for support under the floor when installing the tiedown attachments, and prevents the bolts from pulling through. SPECIFICATIONS: 1) The backing plate measures 6-1/2 x 6-1/2. 2) Thickness is 11 gauge (a little thinner than 1/8). 3/8 holes. 3) 3-1/2 diameter cutout. 4) Steel backing plate is zinc coated to inhibit corrosion.
  • INSTALLATION - these D-rings require routing, or cutting a hole in the floor. We recommend creating/cutting a template and then transferring to the desired location. If you use a 3 hole saw, the d-ring will fit without any further work. Better fit - use a 2-1/2 hole saw then jigsaw the flat edge and then bevel the edge with a wood hasp to create a snug fit.
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Brand: Farm Tough Tools   |   Manufacturer: Farm Tough Tools

Package Dimensions: 3.7 x 7.4 x 7.4 inches (9.4 x 18.8 x 18.8 cm)

Amazon Price: $38.75 | as of 11/16/2018(5:31am pst)
Availibility: Usually ships in 24 hours
List Price: $38.75

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  #5

Ten (10) 5/16-18 x 3/4" Long Carriage Bolts Set w/Nuts & Washers (BCP297)

 Ean: 0688938503451   |    PartNumber: BCP297   |   Asin: B07DP8TGN3

Round domed head with square neck Package includes ten each of bolts, hex nuts & washers Zinc plated for corrosion resistance Suitable for indoor or outdoor use BCP Fasteners are always backed by a 100% satisfaction guarantee A carriage bolt, coach bolt or round head square neck bolt is a form of bolt used to fasten metal to wood or wood to wood.

Carriage bolts are distinguished from other bolts by its shallow mushroom head and the portion immediately beneath the head is formed into a square section. This makes the bolt self-locking when placed through a square hole in a metal strap, or a round hole in most wood. This allows the fastener to be installed with only a single tool, a spanner or wrench, working from one side. The head of a carriage bolt is usually a shallow dome. The squared section is of the same size as the diameter of the bolt shank, with a plain unthreaded shank.

Carriage bolts were developed for use through iron strengthening plates on either side of a wooden beam. It is commonplace though to use them to bare timber, the squared section giving enough grip to prevent rotation.

Carriage bolts are extensively used in security fixings, such as the Brenton Bolt where the bolt must only be removable from one side. The smooth domed head and square nut below prevent the carriage bolt from being unlocked from the insecure side.

Features

  • Round domed head with square neck
  • Package includes ten each of bolts, hex nuts & washers
  • Zinc plated for corrosion resistance
  • Suitable for indoor or outdoor use
  • BCP Fasteners are always backed by a 100% satisfaction guarantee
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Brand: BCP Fasteners   |   Manufacturer: BCP Fasteners

Amazon Price: $6.95 | as of 11/16/2018(5:31am pst)
Availibility: Usually ships in 1-2 business days
List Price: $6.95

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  #6

Hard-to-Find Fastener 014973453671 Carriage Bolts, 5/16-18 x 3/4, Piece-25

Model: 14973453671   |    Mpn: CBS-349-25   |    Ean: 0738287348811   |    PartNumber: CBS-349-25   |   Asin: B00L1L31DA

We stock a wide variety of fasteners ideal for many applications around the home, farm, business, automotive, and in industry. Most of our fasteners have a light Zinc plating over steel giving a more rust resistant finish. We also sell coated and stainless products for additional rust resistance. We stock many grades of fasteners ranging from low carbon steel on up to hardened, heat treated steel. Not all fasteners are applicable for all applications so be certain to test thoroughly and get the opinion of a licensed builder or certified building or structural engineer before relying on these fasteners for any situations where failure would result in damage to property or person.

Features

  • Diameter 1: 5/16 inches
  • Diameter 2: 23/32 inches
  • Length: 3/4 inches
  • Material: Steel
  • Finish: Zinc
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Brand: Hard-to-Find Fastener   |   Manufacturer: Midwest Fastener Corp

Item Dimensions: 1.5 x 1.75 x 3.5 inches (3.8 x 4.4 x 8.9 cm)   |   Package Dimensions: 1.7 x 1.9 x 3.5 inches (4.3 x 4.8 x 8.9 cm)

Amazon Price: $5.58 | as of 11/16/2018(5:31am pst)
Availibility: Usually ships in 24 hours
List Price: $6.56

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  #7

Makerbeam M3 Bolts with Square Head, 12mm 100 pcs and 25mm 25pcs

 Ean: 0706795639561   |    PartNumber: 101013   |   Asin: B00OXR1X5C

MakerBeam M3 square head bolts attach beams to other MakerBeam elements such as brackets and bearings. Contents: bag of approximately 100 M3 square head bolts (12mm).1 bag of approximately 25 M3 stainless steel square head bolts (25mm) Can be used for MakerBeam, MakerBeam XL and OpenBeam profiles (both use M3 size bolts). Application: scientific, electronics, laboratories, home technical projects, displays/exhibits, robotics, etc. MakerBeam.eu is a versatile and lightweight structural system (T-slot) with components that give endless building possibilities in desktop size. There are no fixed positions for mounting giving you the freedom to build your own design easily. All MakerBeam elements can be combined and reused (no welding required) enabling shorter design and assembly times.

Features

  • 1 bag of approximately 100 M3 stainless steel square head bolts (12mm) designed for MakerBeam (10x10mm in diameter).
  • 1 bag of approximately 25 M3 stainless steel square head bolts (25mm)
  • With hex hole for easy use with hex nut driver
  • All MakerBeam elements can be combined and reused (no welding required) enabling shorter design and assembly times
  • MakerBeam enables professional prototyping and provides mechanics for any electronics project
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Brand: MakerBeam   |   Manufacturer: MakerBeam

Package Dimensions: 0.5 x 2.7 x 4 inches (1.3 x 6.9 x 10.2 cm)

Amazon Price: $15.30 | as of 11/16/2018(5:31am pst)
Availibility: Usually ships in 24 hours
List Price: $15.30

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  #8

Prime-Line 9062832 Carriage Bolts, 5/16 in.-18 X 1 in., A307 Grade A Zinc Plated Steel, 100-Pack

Model: 9062832   |    Mpn: 9062832   |    Ean: 0049793104595   |    PartNumber: 9062832   |   Asin: B074ZYPYGG

Carriage bolts feature a slightly rounded head and have no exposed sharp edges when fully fastened. Due to that reason, they are often used when a more aesthetic look is desired. They are commonly used on docks and on playground equipment or in cases where it may be difficult to reach the bolt head with a tool. The square shoulder on carriage bolts help to hold it in place while the nut is fastened.

Features

  • Size: 5/16 inch-18 X 1 inch
  • Features a smooth rounded head as opposed to a standard hex head
  • Square shoulder allows for nut to be tightened or loosened
  • Often used in cases where a protruding bolt head could cause injury
  • Nuts and washers not included, ensure washers and nuts are same diameter
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Brand: Prime-Line Products   |   Manufacturer: Prime-Line

Item Dimensions: 2 x 4 x 1 inches (5.1 x 10.2 x 2.5 cm)   |   Package Dimensions: 1.69 x 5.2 x 5.24 inches (4.3 x 13.2 x 13.3 cm)

Amazon Price: $15.00 | as of 11/16/2018(5:31am pst)
Availibility: Usually ships in 24 hours
List Price: $15.00

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  #9

4 Sign Mounting Hardware Carriage Bolt with Security Nut 5/16-18 X 2" for U Channel Post

 PartNumber: 714583296605   |   Asin: B07GXDCCH1

This screw for mounting to sign Is designed for U-Channel Post With A 5/16-18 To ensure a comfortable fit. with security features such as breakaway nut and Dome head Carriage Bolt To ensure A tamper resistant experience. This Make It Difficult But Not impossible to remove, Hence the name Tamper Resistant. STURDY: Prevents the tampering and removal of traffic signs LONG LASTING: Uses Carriage bolt and Security Breakaway Nut WEATHER RESISTANT: This Heavy Duty Street Sign Bracket is an excellent choice for all types of weather and road conditions. SIMPLE ASSEMBLY: 4 bolts & 4 nuts per pack, Measurements: 2" x 5/16"

Features

  • 5/16-18 Steel Zinc-plated Bolt and Cast Aluminum Security Nut
  • INCLUDES: 4 Carriage Bolts and 4 Security Nuts
  • Tamper Resistant Nut Makes It difficult But Not Impossible To Remove
  • Great For Mounting Signs On Any Standard U-Channel Post
  • The Ultimate Sign Mounting Hardware
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Brand: County Solutions   |   Manufacturer: County Solutions

Item Dimensions: 0.3 x 0.3 x 2 inches (0.8 x 0.8 x 5.1 cm)   |   Package Dimensions: 0.4 x 1.5 x 2.2 inches (1.0 x 3.8 x 5.6 cm)

Amazon Price: $15.99 | as of 11/16/2018(5:31am pst)
Availibility: Usually ships in 24 hours
List Price: $15.99

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  #10

midwest air technologies 328503b 10 Pack, 3/8" x 2", Galvanized Carriage Bolt With Nut,

Model: 328503B   |    Mpn: 328503C   |    Ean: 0099713044586   |    PartNumber: 328503C   |   Asin: B00F2QL0WO

10 Pack, 3/8" x 2", Galvanized Carriage Bolt With Nut, Box.

Features

Brand: Midwest Air Technologies   |   Manufacturer: TV Non-Branded Items

Item Dimensions: 2 x 4 x 3 inches (5.1 x 10.2 x 7.6 cm)   |   Package Dimensions: 0.5 x 2.9 x 3.2 inches (1.3 x 7.4 x 8.1 cm)

Amazon Price: $6.87 | as of 11/16/2018(5:31am pst)
Availibility: Usually ships in 1-2 business days
List Price: $3.06

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  #11

Prime-Line 9063761 Carriage Bolts, 3/8 in.-16 X 3-1/2 in., A307 Grade A Zinc Plated Steel, 25-Pack

Model: 9063761   |    Mpn: 9063761   |    Ean: 0049793124609   |    PartNumber: 9063761   |   Asin: B074ZMZ34G

Carriage bolts feature a slightly rounded head and have no exposed sharp edges when fully fastened. Due to that reason, they are often used when a more aesthetic look is desired. They are commonly used on docks and on playground equipment or in cases where it may be difficult to reach the bolt head with a tool. The square shoulder on carriage bolts help to hold it in place while the nut is fastened.

Features

  • Size: 3/8 inch-16 X 3-1/2 inch
  • Features a smooth rounded head as opposed to a standard hex head
  • Square shoulder allows for nut to be tightened or loosened
  • Often used in cases where a protruding bolt head could cause injury
  • Nuts and washers not included, ensure washers and nuts are same diameter
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Brand: Prime-Line Products   |   Manufacturer: Prime-Line

Item Dimensions: 4 x 4 x 4 inches (10.2 x 10.2 x 10.2 cm)   |   Package Dimensions: 1.97 x 6.61 x 7.52 inches (5.0 x 16.8 x 19.1 cm)

Amazon Price: $9.69 | as of 11/16/2018(5:31am pst)
Availibility: Usually ships in 24 hours
List Price: $9.69

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  #12

Eowpower 5Pcs Stainless Steel M10 x 35mm Ring Eye Bolt

 PartNumber: 02-012-012   |   Asin: B074K3T773

Material 304 Stainless Steel
Thread pitch: 1.5mm
Threaded: M10(10mm)
Threaded length: M10 x 35mm
Total Height : 78mm / 3.07"
Ring inner diameter: approx.25mm/1"
Ring Thickness: 9mm/ 0.35"

Package Including:
5 * M10 Ring Eye Bolt

Features

  • Material 304 Stainless Steel,anti-rust and durable
  • Thread pitch: 1.5mm
  • Threaded length: M10 x 35mm
  • Ring inner diameter: approx.25mm/1
  • Total Height : 78mm / 3.07
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Brand: Eowpower   |   Manufacturer: Eowpower

Package Dimensions: 1.46 x 3.58 x 4.96 inches (3.7 x 9.1 x 12.6 cm)

Amazon Price: $17.99 | as of 11/16/2018(5:31am pst)
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List Price: $21.99

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  #13

Eowpower 5Pcs Stainless Steel M10 Male Thread Machinery Shoulder Lifting Ring Eye Bolt

 PartNumber: 02-012-014   |   Asin: B07DL2ZR6Q

Material 304 Stainless Steel,anti-rust and durable

Specification:
Thread Pitch: 1.5mm Metric thread
Ring inner diameter: approx.25.5mm/1"
Total Height : 60mm / 2.36"
Thread Size ( A x E): M10 x 17mm/ 0.4" x 0.67"(D*L)
Ring Thickness: 8.85mm/ 0.35"

Package Including:
5 * M10 Ring Eye Bolt

Features

  • Material 304 Stainless Steel,anti-rust and durable
  • Ring Thickness: 8.85mm/ 0.35
  • Thread Pitch: 1.5mm
  • Ring inner diameter: approx.25.5mm/1inch
  • Total Height : 60mm / 2.36; Thread Size ( A x E): M10 x 17mm/ 0.4 x 0.67(D*L)
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Brand: Eowpower   |   Manufacturer: Eowpower

Package Dimensions: 1.22 x 3.39 x 4.69 inches (3.1 x 8.6 x 11.9 cm)

Amazon Price: $13.99 | as of 11/16/2018(5:31am pst)
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List Price: $18.99

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  #14

Eowpower 5Pcs M8 Male Thread Machinery Shoulder Lifting Ring Eye Bolt

 Ean: 0611982485251   |    PartNumber: 02-012-003   |   Asin: B01NBN7L55

Material 304 Stainless Steel,anti-rust and durable

Specification:
Pitch: Metric thread
Ring inner diameter: approx.20mm/0.79"
Total Height : 45mm / 1.77"
Thread Size ( A x E): M8 x 12.5mm/ 0.3" x 0.5"(D*L)
Ring Thickness: 7mm/ 0.28"

Package Including:
5 * M8 Ring Eye Bolt

Features

  • Material 304 Stainless Steel,anti-rust and durable
  • Pitch: Metric thread
  • Ring inner diameter: approx.20mm/0.79
  • Total Height : 45mm / 1.77; Thread Size ( A x E): M8 x 12.5mm/ 0.3 x 0.5(D*L)
  • Ring Thickness: 7mm/ 0.3
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Brand: Eowpower   |   Manufacturer: Eowpower

Package Dimensions: 0.59 x 2.6 x 4.21 inches (1.5 x 6.6 x 10.7 cm)

Amazon Price: $9.35 | as of 11/16/2018(5:31am pst)
Availibility: Usually ships in 24 hours
List Price: $9.35

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  #15

Hard-to-Find Fastener 014973230487 Carriage Bolts, 1/4-20 x 2-Inch, 100-Piece

Model: 014973230487   |    Mpn: 01055   |    Ean: 0014973230487   |    PartNumber: 01055   |   Asin: B00OHU0TXW

We stock a wide variety of fasteners ideal for many applications arround the home, farm, business, automotives, and in industry. Most of our fasteners have a light zinc plating over steel giving a more rust resistant finsh. We also sell coated and stainless products for additional rust resistance. We stock many grades of fasteners ranging from low carbon steel on up to hardened, heat treated steel. Not all fasteners are applicable for all applications so be certain to test thouroughly and get the opinion of a licensed building or certified building or structural engineer before relying on these fasteners for any situations where failure would result in damage to property or person.

Features

  • Diameter 1: 1/4 inch
  • Diameter 2: 19/32 inches
  • Length: 2 inches
  • Material: Steel
  • Finish: Zinc
  • Diameter: 1/4
  • Head Style: Carriage
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Brand: Hard-to-Find Fastener   |   Manufacturer: Hard-to-Find Fastener

Item Dimensions: 3.25 x 3.25 x 4.13 inches (8.3 x 8.3 x 10.5 cm)   |   Package Dimensions: 3.1 x 3.4 x 4.2 inches (7.9 x 8.6 x 10.7 cm)

Amazon Price: $11.69 | as of 11/16/2018(5:31am pst)
Availibility: Usually ships in 24 hours
List Price: $15.26

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  #16

Hillman 812626 Hot Dipped Galvanized Carriage Bolt, 1/2 x 6-Inch, Silver, 25-Pack

Model: 812626   |    Mpn: 812626   |    Ean: 0008236133974   |    PartNumber: 812626   |   Asin: B000B4GTYG

Carriage Bolts are designed to fasten a wooden face to either a wood or metal frame. Its flat head is designed to eliminate the need for a washer and provide a semi-flush finish to applications. The square underside of the head is self locking to eliminate spinning and the need for a driving tool. The galvanized finish provides optimal rust prevention but can be chalky in appearance.

Features

  • Carriage Bolts are designed to fasten a wooden face to either wood or metal
  • Flat head provides a semi-flush finish to applications
  • The heads is designed to eliminate the need for a washer
  • Square underside of the head is self locking to eliminate the need for a driving tool
  • Galvanized finish is perfect for rust prevention
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Brand: Hillman   |   Manufacturer: The Hillman Group

Item Dimensions: 3.4 x 4.6 x 7.1 inches (8.6 x 11.7 x 18.0 cm)   |   Package Dimensions: 1.6 x 3 x 5 inches (4.1 x 7.6 x 12.7 cm)

Amazon Price: $25.31 | as of 11/16/2018(5:31am pst)
Availibility: Usually ships in 24 hours
List Price: $29.73 | Used Price: $14.42

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  #17

MakerBeam M3 bolts with square head, 6mm (pack of 250) designed for MakerBeam (10x10mm in diameter).

 Ean: 0799475459573   |    PartNumber: m3b06b250   |   Asin: B00G2DNW3G

MakerBeam M3 square head bolts attach beams to other MakerBeam elements such as brackets and bearings. Designed for MakerBeam (10x10mm in diameter). Contents: bag of approximately 250 M3 square head bolts (6mm). Can be used for MakerBeam and OpenBeam profiles (both use M3 size bolts). Application: scientific, electronics, laboratories, home technical projects, displays/exhibits, robotics, etc. MakerBeam.eu is a versatile and lightweight structural system (T-slot) with components that give endless building possibilities in desktop size. There are no fixed positions for mounting giving you the freedom to build your own design easily. All MakerBeam elements can be combined and reused (no welding required) enabling shorter design and assembly times.

Features

  • 1 bag of approximately 250 M3 stainless steel square head bolts (6mm) designed for MakerBeam (10x10mm in diameter).
  • With hex hole for easy use with hex nut driver
  • All MakerBeam elements can be combined and reused (no welding required) enabling shorter design and assembly times
  • MakerBeam enables professional prototyping and provides mechanics for any electronics project
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Brand: MakerBeam   |   Manufacturer: MakerBeam

Package Dimensions: 0.4 x 2.1 x 2.7 inches (1.0 x 5.3 x 6.9 cm)

Amazon Price: $15.30 | as of 11/16/2018(5:31am pst)
Availibility: Usually ships in 24 hours
List Price: $15.30

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  #18

Ten (10) 1/4-20 x 3/4" Long Carriage Bolts Set w/Nuts & Washers (BCP275)

 Ean: 0688938503239   |    PartNumber: BCP275   |   Asin: B07DKTSWB9

Round domed head with square neck Package includes ten each of bolts, hex nuts & washers Zinc plated for corrosion resistance Suitable for indoor or outdoor use BCP Fasteners are always backed by a 100% satisfaction guarantee A carriage bolt, coach bolt or round head square neck bolt is a form of bolt used to fasten metal to wood or wood to wood.

Carriage bolts are distinguished from other bolts by its shallow mushroom head and the portion immediately beneath the head is formed into a square section. This makes the bolt self-locking when placed through a square hole in a metal strap, or a round hole in most wood. This allows the fastener to be installed with only a single tool, a spanner or wrench, working from one side. The head of a carriage bolt is usually a shallow dome. The squared section is of the same size as the diameter of the bolt shank, with a plain unthreaded shank.

Carriage bolts were developed for use through iron strengthening plates on either side of a wooden beam. It is commonplace though to use them to bare timber, the squared section giving enough grip to prevent rotation.

Carriage bolts are extensively used in security fixings, such as the Brenton Bolt where the bolt must only be removable from one side. The smooth domed head and square nut below prevent the carriage bolt from being unlocked from the insecure side.

Features

  • Round domed head with square neck
  • Package includes ten each of bolts, hex nuts & washers
  • Zinc plated for corrosion resistance
  • Suitable for indoor or outdoor use
  • BCP Fasteners are always backed by a 100% satisfaction guarantee
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Brand: BCP Fasteners   |   Manufacturer: BCP Fasteners

Package Dimensions: 0.94 x 4.61 x 6.81 inches (2.4 x 11.7 x 17.3 cm)

Amazon Price: $6.95 | as of 11/16/2018(5:31am pst)
Availibility: Usually ships in 24 hours
List Price: $6.95

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  #19

Hillman 240180 Carriage Bolt, 3/8 x 4-Inch, Steel, Zinc-Plated, Silver, 50-Pack

Model: 240180   |    Mpn: 240180   |    Ean: 0008236087024   |    PartNumber: 240180   |   Asin: B000BD6E60

Carriage Bolts are designed to fasten a wooden face to either a wood or metal frame. Its flat head is designed to eliminate the need for a washer and provide a semi-flush finish to applications. The square underside of the head is self locking to eliminate spinning and the need for a driving tool. The zinc plating is rust resistant and provides a beautiful, consistent finish; but, may not work for all exterior projects.

Features

  • Carriage Bolts are designed to fasten a wooden face to either wood or metal
  • Flat head provides a semi-flush finish to applications
  • The heads is designed to eliminate the need for a washer
  • Square underside of the head is self locking to eliminate the need for a driving tool
  • Zinc Finish provides a beautiful, consistent finish
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Brand: Hillman   |   Manufacturer: The Hillman Group

Item Dimensions: 5.4 x 4.3 x 3.3 inches (13.7 x 10.9 x 8.4 cm)   |   Package Dimensions: 3.3 x 4.4 x 5.7 inches (8.4 x 11.2 x 14.5 cm)

Amazon Price: $15.04 | as of 11/16/2018(5:31am pst)
Availibility: Usually ships in 24 hours
List Price: $20.36 | Used Price: $10.51

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