Professional Carriage Bolt Manufacturer-T&Y Hardware
A carriage bolt, also known as a carriage screw, round head bolt, or coach bolt, is a fastener with a unique design. Its head is semi-circular with a smooth surface without drive slots, while the neck is provided with a fixing device that can be inserted into the mounting hole to stop the bolt from rotating. This design allows it to be fixed only by fastening the nut at the tail once installed, thus providing a degree of anti-theft function and aesthetics.
T&Y Hardware Industry is the leading carriage bolt manufacturer in the industry. Our products cover ANSI/ASME B18.5, DIN603, ISO 8677, and other international standards. Every bolt has undergone strict quality control. In addition to supplying various types of standard bolts, we also provide OEM and ODM customized services to meet customers’ individual needs. We hope that we can become your most reliable partner and jointly promote the progress and development of the industry.
Carriage Bolt By Material
Our carriage bolts offer various material options, each with unique characteristics. Commonly used materials include stainless steel, carbon steel, brass, aluminum bronze, etc.
Stainless steel has excellent corrosion resistance and strength, and is suitable for harsh environments; Carbon steel is famous for its high strength and wear resistance, and is cost-effective; Brass and bronze have better resistance to certain chemicals; Aluminum, on the other hand, is suitable for occasions where weight reduction is required because of its lightweight and easy processing.
Stainless Steel Carriage BoltsDiameter: M5,M6,M8,M10,M10-1.25,M12,M16,M20
Length: ≤800mm or 30″ 10mm – 270mm
Grade: Grade 4.8, Grade 8.8, A2-70, A4-70
Carbon Steel Carriage BoltsDiameter: M5,M6,M8,M10,M10-1.25,M12,M16,M20
Length: ≤800mm or 30″ 10mm – 270mm
Grade: Grade 4.8, Grade 8.8, A2-70, A4-70
Brass Carriage BoltsDiameter: M5,M6,M8,M10,M10-1.25,M12,M16,M20
Length: ≤800mm or 30″ 10mm – 270mm
Grade: Grade 4.8, Grade 8.8, A2-70, A4-70
Aluminum Carriage BoltDiameter: M5,M6,M8,M10,M10-1.25,M12,M16,M20
Length: ≤800mm or 30″ 10mm – 270mm
Grade: Grade 4.8, Grade 8.8, A2-70, A4-70
Size: M5,M6,M8,M10,M10-1.25,M12,M16,M20
Length: ≤800mm or 30″ 10mm – 270mm
Grade: Grade 1, Grade 2, Grade 5, Grade 16, Grade 23
Bronze Carriage BoltsDiameter: M5,M6,M8,M10,M10-1.25,M12,M16,M20
Length: ≤800mm or 30″ 10mm – 270mm
Grade: Grade 4.8, Grade 8.8, A2-70, A4-70
Carriage Bolt By Feature
Grade 8 Black Oxide Carriage BoltsDiameter: M5,M6,M8,M10,M10-1.25,M12,M16,M20
Length: ≤800mm or 30″ 10mm – 270mm
Grade: Grade 4.8, Grade 8.8, A2-70, A4-70
Thread Types: UNC thread, UNF thread, ISO thread, Metric thread, Imperial thread, Full thread, Half thread, Coarse thread, Fine thread
Long Large Head Carriage BoltDiameter: M5,M6,M8,M10,M10-1.25,M12,M16,M20
Length: 100mm – 270mm
Grade: Grade 4.8, Grade 8.8, A2-70, A4-70
Thread Types: UNC thread, UNF thread, ISO thread, Metric thread, Imperial thread, Full thread, Half thread, Coarse thread, Fine thread
Diameter: M5,M6,M8,M10,M10-1.25,M12,M16,M20
Length: 100mm – 270mm
Grade: Grade 4.8, Grade 8.8, A2-70, A4-70
Thread Types: UNC thread, UNF thread, ISO thread, Metric thread, Imperial thread, Full thread, Half thread, Coarse thread, Fine thread
Carriage Bolt With Allen HeadDiameter: M5,M6,M8,M10,M10-1.25,M12,M16,M20
Length: 10mm – 270mm
Grade: Grade 4.8, Grade 8.8, A2-70, A4-70
Thread Types: UNC thread, UNF thread, ISO thread, Metric thread, Imperial thread, Full thread, Half thread, Coarse thread, Fine thread
Galvanised Carriage Bolt And Nut WasherDiameter: M5,M6,M8,M10,M10-1.25,M12,M16,M20
Length: 10mm – 270mm
Grade: Grade 4.8, Grade 8.8, A2-70, A4-70
Thread Types: UNC thread, UNF thread, ISO thread, Full thread, Half thread, Coarse thread, Fine thread
Flat Head Carriage BoltDiameter: M5,M6,M8,M10,M10-1.25,M12,M16,M20
Length: 10mm – 270mm
Grade: Grade 4.8, Grade 8.8, A2-70, A4-70
Thread Types: UNC thread, UNF thread, ISO thread, Metric thread, Imperial thread, Full thread, Half thread, Coarse thread, Fine thread
Ribbed Neck Carriage BoltDiameter: M5,M6,M8,M10,M10-1.25,M12,M16,M20
Length: 10mm – 270mm
Grade: Grade 4.8, Grade 8.8, A2-70, A4-70
Thread Types: UNC thread, UNF thread, ISO thread, Metric thread, Imperial thread, Full thread, Half thread, Coarse thread, Fine thread
Carriage Bolt By Dimensions
1 2 Carriage Bolt
1 4 Carriage Bolt
3 8 Carriage Bolt
5 8 Carriage Bolt
5 16 Carriage Bolt
7 16 Carriage Bolt
1 2 20 Carriage Bolt
Why Choose T&Y hardware Carriage bolts?
T&Y hardware, working for carriage bolts 22 years, We are trying our best to supply you with qualified square neck carriage bolts, Ribbed head carriage bolts, Flat head carriage bolts
T&Y Hardware carriage bolts processing Strictly follow ISO 9001 requirements, from raw material coming inspection to processing inspection and coating processing, Our QC term check and keep a record in the T&Y Hardware system, if any unqualified Coach Bolts, we will stop and update processing. After finished coating or heat treatment coating for carriage bolts, the T&Y QC person will check again to avoid any quality issue
- Customer feedback
- Our various certificates
- Carriage bolt sizes chart
- Strength grade
- Material
- Surface preparation
4.8 grade、6.8 grade、 8.8 grade、10.9 grade、 12.9 grade
A2-70、A2-80、A4-70、A4-80
Carbon Steel：Q345 (16Mn)25#,35#,45#
Stainless Steel: SS202、SS304、SS316、SS410、SS420、SS430
Duplex stainless steel : S32750、S32760、S2205、S2507
Alloy steel: Inconel 600、 Inconel 625 、Inconel 718 、 Monel 400、 K500
Aluminum, titanium alloy, and brass
polishing, blackening, blue-white zinc, zinc-nickel alloy, passivation, Dacromet, blackening, galvanized, Heat treatment
Related Product
Carriage bolts usually have rounded heads and are mainly used to connect wood to metal. Hex bolts have hexagonal heads. This design makes them widely used in the construction, heavy machinery, and automotive industries, and is easy to use wrenches or Socket tools for operation.
For Din standard, T&Y hardware carriage bolt material is for Class 4.8 /8.8 /10.9. For IFI Standard, T&Y hardware materials are for Grade A307A, Grade 2, Grade 5, and Grade 8 carriage bolts. For stainless steel material, SS304 carriage bolts, SS316 carriage bolts, Brass carriage bolts, and copper carriage bolts
Carriage bolts are mainly used for the connection and fixation of wood and decks and are also widely used in machinery, construction, and other fields. Its unique head design and anti-theft function make it play an important role in various application scenarios.
For small quantities of bulk carriage bolts, you can conveniently purchase them at your local hardware store. If you require large quantities, it is recommended to contact a professional bolt manufacturer directly, such as a professional bolt manufacturing business. With us, whether it is standard specifications or special custom nuts and bolts, we can meet your various needs, ensuring that you get a high-quality and compliant product.
When installing carriage bolts on wood materials, follow these steps:
- Drilling:
Drill a hole in the predetermined location, the diameter of which should be slightly smaller than the size of the carriage bolt neck (square neck).
- Install the bolts:
Place the carriage bolt into the hole and hit the head of the bolt with a hammer until its neck (square neck) completely sinks into the surface of the wood.
- Assemble accessories:
At the other end of the bolt protruding from the wood, put washers, nuts and other required accessories in turn as needed.
- Fastening:
Using a suitable tool (such as a wrench or socket), tighten the nut evenly to the desired strength.
First, a square hole should be machined on the metal part, slightly smaller than the size of the bracket bolt neck.
Then, insert the bolt vertically into the hole and gently tap the bolt head to fully embed the bolt neck (square neck) into the machined square hole.
Finally, install the washer and nut in sequence on the other end of the bolt and tighten them.
Our main customers are from Europe, South And North America, Southeast Asia
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