20 Best 5 16 18 X 3 4 Carriage Bolt [2024]

Are you looking for the best 5 16 18 X 3 4 Carriage Bolt? Based on expert reviews, we ranked them. We've listed our top-ranked picks, including the top-selling 5 16 18 X 3 4 Carriage Bolt.

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1 uxcell 5/16-18x3/4' Carriage Bolt Round Head Square Neck 304 Stainless Steel 20pcs uxcell 5/16-18x3/4" Carriage Bolt Round Head Square Neck 304 Stainless Steel 20pcs
2 5/16-18X3/4 Carriage Bolt Grade 8 Fully Threaded Zinc Yellow (Pack of 25) 5/16-18X3/4 Carriage Bolt Grade 8 Fully Threaded Zinc Yellow (Pack of 25)
3 Pro Bamboo Kitchen 10 Sets Stainless Steel Long Carriage Bolts 5/16'-18x3/4' with 304 Stainless... Pro Bamboo Kitchen 10 Sets Stainless Steel Long Carriage Bolts 5/16"-18x3/4" with 304 Stainless...
4 Hard-to-Find Fastener 014973453671 Carriage Bolts, 5/16-18 x 3/4, Piece-25 Hard-to-Find Fastener 014973453671 Carriage Bolts, 5/16-18 x 3/4, Piece-25
5 Small Parts FSC51634CB5Z Round Grade 5 Square-Neck Carriage Bolt, Steel, Hex, 5/16'-18' Thread Size,... Small Parts FSC51634CB5Z Round Grade 5 Square-Neck Carriage Bolt, Steel, Hex, 5/16"-18" Thread...
6 uxcell 5/16-18x3-1/4' Carriage Bolt Round Head Square Neck 304 Stainless Steel 10pcs uxcell 5/16-18x3-1/4" Carriage Bolt Round Head Square Neck 304 Stainless Steel 10pcs
7 Hard-to-Find Fastener 014973230746 Carriage Bolts, 5/16-18 x 3/4-Inch, 100-Piece Hard-to-Find Fastener 014973230746 Carriage Bolts, 5/16-18 x 3/4-Inch, 100-Piece
8 uxcell 5/16-18x3/4' Carriage Bolt Round Head Square Neck 304 Stainless Steel 10pcs uxcell 5/16-18x3/4" Carriage Bolt Round Head Square Neck 304 Stainless Steel 10pcs
9 3/8-16 x 4' Carriage Bolts, Stainless Steel 18-8 (304), Round Head, Square Neck, Fully Threaded, 5... 3/8-16 x 4" Carriage Bolts, Stainless Steel 18-8 (304), Round Head, Square Neck, Fully Threaded,...
10 Stainless 3/8-16 x 1-1/4' Carriage Bolt (1' to 5' Lengths Available in Listing), 18-8 Stainless... Stainless 3/8-16 x 1-1/4" Carriage Bolt (1" to 5" Lengths Available in Listing), 18-8 Stainless...
11 (8 pc)5/16-18 x 3' Long Square-Neck Carriage Bolts Set w/Nuts & Washers,Zinc-Plated,Carbon Steel... (8 pc)5/16-18 x 3" Long Square-Neck Carriage Bolts Set w/Nuts & Washers,Zinc-Plated,Carbon Steel...
12 5/16-18 x 3/4' (1/2' to 3' Lengths Available) Round Domed Head Square Neck Carriage Bolt 304... 5/16-18 x 3/4" (1/2" to 3" Lengths Available) Round Domed Head Square Neck Carriage Bolt 304...
13 5/16'-18 X 3'(25pc) Stainless Carriage Bolt, 18-8 Stainless Steel Full Thread Coverage,Carriage... 5/16"-18 X 3"(25pc) Stainless Carriage Bolt, 18-8 Stainless Steel Full Thread Coverage,Carriage...
14 Glvaner (6 Sets) 3/8-16 x 4' Stainless Steel Carriage Bolts Screws Round Head Square Neck and Hex... Glvaner (6 Sets) 3/8-16 x 4" Stainless Steel Carriage Bolts Screws Round Head Square Neck and Hex...
15 Carriage Bolt 18-8 Stainless Steel 5/16'-18 x 3/4' Qty-25 Carriage Bolt 18-8 Stainless Steel 5/16"-18 x 3/4" Qty-25
16 PSCCO 10 Sets 5/16-18x2' Carriage Bolts Set Round Head Square Neck Screws with Nuts and Washers PSCCO 10 Sets 5/16-18x2" Carriage Bolts Set Round Head Square Neck Screws with Nuts and Washers
17 binifiMux 12pcs Black 1/4-20 x 1' 1-1/4' 1-1/2' 2' 2-1/2' 3' 3-1/2' Hex Socket Cap Screws Bolts for... binifiMux 12pcs Black 1/4-20 x 1" 1-1/4" 1-1/2" 2" 2-1/2" 3" 3-1/2" Hex Socket Cap Screws Bolts...
18 Hard-to-Find Fastener 014973178963 Carriage Bolts, 5/16-18 x 3/4, Piece-8 Hard-to-Find Fastener 014973178963 Carriage Bolts, 5/16-18 x 3/4, Piece-8
19 3/8-16 x 4' Stainless Steel Carriage Bolts with Hex Nuts and Flat Washers 304 Stainless Steel 18-8... 3/8-16 x 4" Stainless Steel Carriage Bolts with Hex Nuts and Flat Washers 304 Stainless Steel...
20 Prime-Line 9063153 Carriage Bolts, 5/16 inch-18 X 4 inch, A307 Grade A Zinc Plated Steel Prime-Line 9063153 Carriage Bolts, 5/16 inch-18 X 4 inch, A307 Grade A Zinc Plated Steel
Bestseller No. 1
uxcell 5/16-18x3/4" Carriage Bolt Round Head Square Neck 304 Stainless Steel 20pcs
  • Product Name: Carriage Bolts; Dimension: 5/16-18x3/4"; Number of Teeth: 18; Rod Length(Include Neck): 3/4"; Total Length: 23mm / 0.91"; Head Dia: 18mm...
  • Designed with a round head, square neck and 304 stainless steel material. Not easy to slip when installed.
  • Due to the head, there is no groove type that can be used with a power assisting tool. It can also be hidden during actual use to prevent disassembly.
  • Precision-forged, acid and alkali resistant, corrosion-resistant and resistant to oxidation. The thread is smooth and flat, and the screw teeth are...
  • Used widely in the home and office appliances, communication equipment, ship assembly, and other machinery industry.
Bestseller No. 2
5/16-18X3/4 Carriage Bolt Grade 8 Fully Threaded Zinc Yellow (Pack of 25)
  • Package Dimensions: 5 L x 1 H x 5 W (inches)
  • Package Weight: 0.65 pounds
  • Country of Origin : Taiwan, Province Of China
  • Part Number: 3112C8
Bestseller No. 3
Pro Bamboo Kitchen 10 Sets Stainless Steel Long Carriage Bolts 5/16"-18x3/4" with 304 Stainless...
  • High quality 304 stainless steel, high hardness, corrosion resistance, rust proof, beautiful and practical
  • Suitable for indoor and outdoor use. It will not rust even in humid environment with high oxidation resistance
  • Easy to repair and install. Turn the square neck bolt with a wrench to tighten to complete the installation
  • These bracket bolts, hex nuts and plain washers are all made of the same standard. They can be tightened well and are easy to fix and install
  • Package includes: 10 x 5/16"-18 Long Carriage Bolt + 10 x 5/16" Hex Nut + 10 x 5/16" Washer
Bestseller No. 4
Hard-to-Find Fastener 014973453671 Carriage Bolts, 5/16-18 x 3/4, Piece-25
  • Diameter 1: 5/16 inches
  • Diameter 2: 23/32 inches
  • Length: 3/4 inches
  • Material: Steel
  • Finish: Zinc
SaleBestseller No. 5
Small Parts FSC51634CB5Z Round Grade 5 Square-Neck Carriage Bolt, Steel, Hex, 5/16"-18" Thread Size,...
  • Material: steel
  • Thread size: 5/16''-18
  • Length: 3/4 inch
  • Round Grade 5 Square-Neck Carriage Bolt, Steel, Hex, Medium-Strength, 5/16"-18" Thread Size, Zinc Plated, 3/4" Long (Pack of 50)
Bestseller No. 6
uxcell 5/16-18x3-1/4" Carriage Bolt Round Head Square Neck 304 Stainless Steel 10pcs
  • Product Name: Carriage Bolts; Dimension: 5/16-18x3-1/4"; Number of Teeth: 18; Rod Length(Include Neck): 3-1/4"; Total Length: 86mm / 3.39"; Head Dia:...
  • Designed with a round head, square neck and 304 stainless steel material. Not easy to slip when installed.
  • Due to the head, there is no groove type that can be used with a power assisting tool. It can also be hidden during actual use to prevent disassembly.
  • Precision-forged, acid and alkali resistant, corrosion-resistant and resistant to oxidation. The thread is smooth and flat, and the screw teeth are...
  • Used widely in the home and office appliances, communication equipment, ship assembly, and other machinery industry.
SaleBestseller No. 7
Hard-to-Find Fastener 014973230746 Carriage Bolts, 5/16-18 x 3/4-Inch, 100-Piece
  • Diameter: 5/16-Inch
  • Length: 3/4-Inch
  • Material: Steel
  • Finish: Zinc
  • Head Style: Carriage
Bestseller No. 8
uxcell 5/16-18x3/4" Carriage Bolt Round Head Square Neck 304 Stainless Steel 10pcs
  • Product Name: Carriage Bolts; Dimension: 5/16-18x3/4"; Number of Teeth: 18; Rod Length(Include Neck): 3/4"; Total Length: 23mm / 0.91"; Head Dia: 18mm...
  • Designed with a round head, square neck and 304 stainless steel material. Not easy to slip when installed.
  • Due to the head, there is no groove type that can be used with a power assisting tool. It can also be hidden during actual use to prevent disassembly.
  • Precision-forged, acid and alkali resistant, corrosion-resistant and resistant to oxidation. The thread is smooth and flat, and the screw teeth are...
  • Used widely in the home and office appliances, communication equipment, ship assembly, and other machinery industry.
Bestseller No. 9
3/8-16 x 4" Carriage Bolts, Stainless Steel 18-8 (304), Round Head, Square Neck, Fully Threaded, 5...
  • Product Type: Carriage Bolts; System of Measurement: Inch.
  • The carriage bolts are 100% Stainless Steel 18-8 (304) which offers a high level of chemical and corrosion resistance.
  • Thread Diameter: 3/8 Inch; Thread Count: 18 TPI; Screw Length: 4 Inch.
  • Color: Plain Finish.
  • Package Included: 5 x Carriage Bolts.
Bestseller No. 10
Stainless 3/8-16 x 1-1/4" Carriage Bolt (1" to 5" Lengths Available in Listing), 18-8 Stainless...
  • 300 Series Stainless Steel, (18-8)
  • 3/8-16 X 1-1/4" (25 Pieces)
  • Great corrosion resistance for outside applications
Bestseller No. 11
(8 pc)5/16-18 x 3" Long Square-Neck Carriage Bolts Set w/Nuts & Washers,Zinc-Plated,Carbon Steel...
  • Carriage Bolts are a robust and durable fastener solution. Carriage Bolts feature a square section underneath their head, which makes them...
  • About half the strength of medium-strength bolts, these Grade 2 bolts are for light duty fastening.
  • Zinc-plated steel bolts resist corrosion in wet environments.Fullerkreg Fasteners are always backed by a 100% satisfaction guarantee
  • Imperial Carriage Bolts conform to ANSI standard B18.5. Diameters is 5/16 inch and lengths is 3 inch.
  • Package includes ten each of bolts, hex nuts & washers
Bestseller No. 12
5/16-18 x 3/4" (1/2" to 3" Lengths Available) Round Domed Head Square Neck Carriage Bolt 304...
  • Contents: 20 PCS 5/8-16 x 3/4 inch carriage bolt with round domed head and suqare neck
  • Screw Length: 3/4 inch or 13mm (measured from under the round head, including the neck height)
  • Big round domed head designed to eliminate the need for a washer; Square neck underneath the head helps self locking
  • Diameter of the head: 17.48-18.26mm; Height of the round head: 3.96-4.47mm; Height of the Neck: 3.96-4.75mm
  • Made of 304 stainless steel 18-8 (no coating outside) which is superior to regular steel and any zinc plated fasteners, provides good strength and...
Bestseller No. 13
5/16"-18 X 3"(25pc) Stainless Carriage Bolt, 18-8 Stainless Steel Full Thread Coverage,Carriage...
  • 18-8 (SUS304) stainless steel carriage bolts; also known as stainless steel round head square neck bolts,Diameter 1/4-3/8 Length 1"-3" can be...
  • The square neck is stuck in the groove during the installation process to prevent the bolts from rotating. The stainless steel carriage bolts can move...
  • Since the heads of the carriage bolts are round, there is no design of useful power tools, and they can also play a role in preventing theft in the...
  • The carriage bolts are made of 18-8 (SUS304) stainless steel, which is very difficult to be used indoors and outdoors. It is very resistant to...
  • We have a strong after-sales team. You can contact us at any time if you encounter any problems in the process of using stainless steel carriage...
Bestseller No. 14
Glvaner (6 Sets) 3/8-16 x 4" Stainless Steel Carriage Bolts Screws Round Head Square Neck and Hex...
  • Package Includes: 6 Pcs Carriage Bolts (3/8-16 x 4") + 6 Pcs Hex Nuts (3/8"-16)+ 6 Pcs 3/8" ID Flat Washers
  • Thread Size: 3/8-16; Thread Pitch: 16 TPI; Thread Type: Coarse Thread
  • Bolt head diameter: 21mm; Round head height: 5mm; Screw length (including the neck): 4 inch or 100mm
  • Material: 304 stainless steel (A2) and no exterior finish, greater strength and corrosion resistance performance than regular stianless steel or zinc...
  • Carriage bolts have a dome shaped head and a square neck generally requiring a hex nut and flat washer. The square neck makes them self-locking when...
SaleBestseller No. 15
Carriage Bolt 18-8 Stainless Steel 5/16"-18 x 3/4" Qty-25
  • A carriage bolt has a domed or countersunk head and the shank is topped by a short square section under the head of the bolt.
  • The square section grips into the part being fixed, preventing the bolt from turning when the nut is tightened.
  • Carriage bolts are often used to fasten wood panels or board to masonry or to one another.
  • The square shank of the bolt allows it to lock into place when inserted into a round hole in wood or a square hole in a metal strap, the unthreaded...
  • 18-8 Stainless steel is corrosion and rust resistant. 18-8 Stainless steel is considered the fastener industry standard.
Bestseller No. 16
PSCCO 10 Sets 5/16-18x2" Carriage Bolts Set Round Head Square Neck Screws with Nuts and Washers
  • Material:Bolt:Carbon steel,Zinc Plated;Hexagon nut & washer:304 stainless steel.
  • Size:Bolt:5/16-18x2".Hex nuts:5/16"-18.Flat washer:5/16".
  • Strong,durable,corrosion resistant,high hardness,wear resistance.
  • Suitable for indoor or outdoor use.
  • Packing includes:10pcs Carriage bolts,10pcs hexagon nuts and 10pcs flat washers.
Bestseller No. 17
binifiMux 12pcs Black 1/4-20 x 1" 1-1/4" 1-1/2" 2" 2-1/2" 3" 3-1/2" Hex Socket Cap Screws Bolts for...
  • [✔] Name: Black 1/4-20 x 1" Bolts;
  • [✔] Package: 12pcs 1/4-20 Screws, one hex key;
  • [✔] Material: Metal: Color: Black; [✔] Fit hex Type: 4mm;
  • [✔] Applicance: bed, table, chair, crib, cots and other furniture.
Bestseller No. 18
Hard-to-Find Fastener 014973178963 Carriage Bolts, 5/16-18 x 3/4, Piece-8
  • Diameter: 5/16"
  • Length: 3/4 inches
  • Material: Stainless Steel
  • Head Style: Carriage
  • Thread Type: 18 (Coarse)
Bestseller No. 19
3/8-16 x 4" Stainless Steel Carriage Bolts with Hex Nuts and Flat Washers 304 Stainless Steel 18-8...
  • Package Contents: 6 Sets, each set includes one piece carriage bolt, hex nut and flat washer.
  • Screw Length: 4 inch or 100mm (measured from under the round head, including the square neck height)
  • Diameter of the screw head: 20-21.5mm; Height of the screw head: 4.8-5.3mm; Height of the square neck: 4.8-5.7mm;
  • Design feature: Big round domed head designed to eliminate the need for a washer; Square neck underneath the head helps self locking.
  • Made of 304 stainless steel 18-8 (no coating outside) which is superior to regular steel and any zinc plated fasteners, provides good strength and...
Bestseller No. 20
Prime-Line 9063153 Carriage Bolts, 5/16 inch-18 X 4 inch, A307 Grade A Zinc Plated Steel
  • Size: 5/16 inch-18 X 4 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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FAQ:

Q: How to make a square hole for a carriage bolt?

A: How to Make a Square Hole for a Carriage Bolt Measure the width of a carriage bolt’s square shoulder with a tape measure. Select a drill bit from the drill bit set that is 1/16 inch larger than the dimension of the carriage bolt’s square shoulder. Drill a hole into the material with the selected drill bit and 3/8-inch drill motor.

Q: What is the length of a carriage bolt?

A: Typically, carriage bolt sizes range from #10 to 3/4′ in diameter while lengths span from about 1/2′ to 20’—only larger sizes are available in long lengths. Measure length from under the head to the threaded end of the bolt.

Q: What is a carriage bolt?

A: A carriage bolt is a type of fastener that can be made from of a number of different materials (stainless steel being the most popular). A carriage bolt generally has a round head and a flat tip, and is threaded along part of its shank. How much weight can a 3/8 bolt hold?