Carriage bolts are essential fasteners for creating strong, secure connections in wood and metal projects. Their unique design prevents them from turning when tightened, ensuring a stable and reliable joint. Choosing the right carriage bolt is crucial for the longevity and safety of your construction or repair work.
Looking for the best Carriage Bolts?
Discover now our comparison of the best Carriage Bolts. It is never easy to choose from the wide range of offers. On the market, you will find an incalculable number of models, all at different prices. And as you will discover, the best Carriage Bolts are not always the ones at the highest prices! Many criteria are used, and they make the richness and relevance of this comparison.
To help you make the best choice among the hundreds of products available, we have decided to offer you a comparison of the Carriage Bolts in order to find the best quality/price ratio. In this ranking, you will find products listed according to their price, but also their characteristics and the opinions of other customers. Also discover our comparisons by categories. You won’t have to choose your products at random anymore.
No. 1
1250 Piece Carriage Bolt Assortment
- Carriage Bolts, Nuts, Flat and Lock Washers
- Grade 5 Coarse Thread Zinc Plated
SaleNo. 2
LBY 15 Sets Carriage Bolts Screws Assortment Kit, 1/4-20 x 1'' Round Head Square Neck Bolts (with Hex Nuts and...
- 1.1/4-20 x 1" long square-neck carriage bolts set.
- 2.Material: carbon steel, zinc plated; Colour: silvery.
- 3.Size : 1/4-20 x 1": screw diameter: 1/4'', screw length: 1''.
- 4.Contains: 15 sets.
- 5.Use: widely used in many different things, such as beds, chairs, cots, crib, sofa and different kinds of furniture,etc.
No. 3
3/8"-16 x 1.5 Grade 8 Carriage Bolts (10-Pack) – Heavy-Duty Coarse Thread Bolts Includes Flat Washers...
- Complete 10-packs: Includes 10 Grade 8 carriage bolts, 10 hardened flat washers, and 10 nylon Grade 8 lock nuts — everything you need for strong, vibration-resistant fastening in one convenient pack. Bolts 3/8" x 1.5" long. Nuts and washers fit...
- Grade 8 Strength for Demanding Jobs: High-tensile SAE J429 Grade 8 bolts and nuts deliver superior load capacity and shear strength, making this kit ideal for automotive, trailer, machinery, and structural applications. All washers are hardened, which is...
- Utimate Anti-Vibration Nylon Locking System: washers help prevent loosening under torque, shock, and movement — perfect for equipment that sees constant vibration or cyclic loads.
- Precision-Matched Components: All fasteners are 3/8"-16 UNC for reliable fit and consistent clamping force across every assembly — no mismatched hardware, no guesswork.
- Built for Pros & Serious DIYers: Whether you’re repairing equipment, building fixtures, or assembling heavy components, this kit delivers industrial-grade reliability in a compact, easy-to-store format.
No. 4
National Hardware N280-859 V7652 Flat Head Carriage Bolts and Nuts in Zinc plated, 12 pack
- Use on wood or hole in steel, prevents spinning during installation & tightening
- Tighten without being on both sides of the door
- Specifically used on wood or steel garage doors.
No. 5
Meuey Lyot Silver 304 Stainless Steel Carriage Bolts 5/16-18x3/4inch Round Head Square Neck and Hex Nuts Flat...
- Carriage Bolt Nuts kit Made of 304 stainless steel, these flat head bolts offer exceptional corrosion resistance and durability. Perfect for both indoor and outdoor use, they are engineered to withstand harsh environments, ensuring long-lasting...
- Bumper Bolts are used to secure wooden components to wood or metal. With precise Skid Shoe Bolts threading, smooth surfaces, and corrosion-resistant stainless steel construction, this set ensures an efficient and reliable fastening solution for various...
- This complete fastening kit includes 8 pieces of 5/16-18x3/4 inch carriage bolts, 10 hex nuts, and 10flat washers, providing everything you need for a hassle-free installation.The 5/16-18 carriage bolts are fully threaded, providing a strong and secure...
- The snow blower screws use stainless steel hardware and the accompanying locking nut to prevent rust or bolt loosening after prolonged use, providing an ideal selection for a wide range of applications.thus ensuring safe installation. Installation is...
- stainless steel bolts can be used in anti-slip shoes and snow blowers,these are available for indoor and outdoor applications, for home and office appliances, including woodworking, furniture construction, outdoor projects, decking, and more. The square...
No. 6
KOSJETHAS 6 Sets 3/8-16 x 1-1/2" Carriage Bolts Screws Round Head Square Neck and Hex Nuts, Flat Washers...
- Package Included : 6 Sets
- Each 1Set Include : 1Pcs Carriage Bolts ; 1Pcs Nuts And 1Pcs Flat Washers
- Thread Diameter : 3/8" ; Screws Length: 1-1/2" Including Square Neck Height
- Material : 304 Stainless Steel 18-8
- Carriage Bolts Screws : Fantastic Corrosion Resistance ; Apply To Use In Home Decoration, General Repair ; Not Need For Time Consuming And Costly Maintenance
No. 7
Prime-Line 9062830 Carriage Bolts, 5/16 in.-18 X 1 in., A307 Grade A Zinc Plated Steel (50 Pack)
- 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
$15.21
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No. 8
Prime-Line 9062965 Carriage Bolts, 5/16 in.-18 X 2 in., A307 Grade A Zinc Plated Steel (100 Pack)
- Size: 5/16 inch-18 X 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
$25.25
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No. 9
VGBUY 1/4-20 x 1-1/4" Carriage Bolts Screws 24 Sets, 304 Stainless Steel 18-8, Round Head Square Neck...
- Strong Carriage Bolts: Carriage bolt is dome head bolt fastener with a locking neck style, which prevents turning when the nut it tightened or removed. Can be used in wood, metal applications
- Stainless Carriage Bolts: Our 304 stainless steel carriage bolts 1/4 are of excellent corrosion resistance and durability. These carriage bolts 1/4 x 1-1/4 are ideal for both indoor and outdoor use
- Well Made Carriage Bolts 1-1/4 Inch: All of the stainless steel bolts and hex nuts and flat washers are well manufactured with no burs, smooth-symmetrical head, precise and clean threads
- Complete Bolts Nuts Washers Kit: You will get 24pcs 1/4-20 x 1-1/4" carriage bolts, 24pcs 1/4-20 hex nuts, 24pcs 1/4" ID flat washers in one package. Standard size, the bolt conforms to ASME B 18.5
- Versatile: Carriage bolts aren't just for carriages, these bolts can be used on wood projects, timber frame shed build, trailer deck boards, deck project, outdoor bench seat rebuild, etc.
No. 10
VGBUY 3/8-16 x 2-1/2" Carriage Bolts Screws 6 Sets, 304 Stainless Steel 18-8, Round Head Square Neck, Carriage...
- Strong Carriage Bolts: Carriage bolt is dome head bolt fastener with a locking neck style, which prevents turning when the nut it tightened or removed. Can be used in wood, metal applications
- Stainless Carriage Bolts: Our 304 stainless steel carriage bolts 3/8 are of excellent corrosion resistance and durability. These carriage bolts 3/8 x 2-1/2 are ideal for both indoor and outdoor use
- Well Made Carriage Bolts 2-1/2 Inch: All of the stainless steel bolts and hex nuts and flat washers are well manufactured with no burs, smooth-symmetrical head, precise and clean threads
- Complete Bolts Nuts Washers Kit: You will get 6pcs 3/8-16 x 2-1/2" carriage bolts, 6pcs 3/8-16 hex nuts, 6pcs 3/8" ID flat washers in one package. Standard size, the bolt conforms to ASME B 18.5
- Versatile: Carriage bolts aren't just for carriages, these bolts can be used on wood projects, timber frame shed build, trailer deck boards, deck project, outdoor bench seat rebuild, etc.
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Last update on 2026-04-16 / Affiliate links / Images from Amazon Product Advertising API
How to Choose the Best Carriage Bolts
Understanding Carriage Bolt Components
Carriage bolts consist of a smooth, domed head, a square section just below the head, and a threaded shank. The domed head offers a clean finish and prevents injury from sharp edges. The square neck is designed to dig into the material being fastened, preventing rotation during installation and use. The threaded shank allows for secure tightening with a nut.Key Material Considerations
Carriage bolts are commonly made from several materials, each offering different benefits:- Steel: Offers good strength and durability for general-purpose applications. It's often zinc-plated to resist corrosion.
- Stainless Steel: Provides excellent corrosion resistance, making it ideal for outdoor use or in environments prone to moisture. It's also very strong.
- Brass: Offers good corrosion resistance and a decorative appearance, but is generally not as strong as steel.
- Galvanized Steel: Steel treated with a zinc coating for enhanced rust protection, suitable for exterior projects.
Determining the Right Size
Selecting the correct size involves considering two primary dimensions: diameter and length.- Diameter: This refers to the width of the threaded shank and dictates the bolt's strength and the size of the hole required. Common diameters include 1/4", 5/16", 3/8", and 1/2".
- Length: Measure from the underside of the bolt's head to the end of the threaded shank. The bolt should be long enough to pass through all materials and allow for the nut and washer, with a few threads still visible.
