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Home Product Big Head Carriage Bolt M12*35 | Coach Bolt, Heavy-Duty Hex Head Structural Fastener for Construction & Machinery
Big head carriage bolt M12*35

Big Head Carriage Bolt M12*35 | Coach Bolt, Heavy-Duty Hex Head Structural Fastener for Construction & Machinery

Big head carriage bolt M12x35
M12x35 large head coach bolt
Heavy duty carriage bolt M12-35
Big head carriage bolt M12*35
Big head carriage bolt M12x35, also referred to as M12x35 large head coach bolt or heavy duty carriage bolt M12-35, features a robust design with an oversized domed head for enhanced load distribution. Ideal for woodworking, construction, and industrial applications requiring secure fastening.
Categories:Fasteners & Fixings
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Product Description

The Big head carriage bolt M12x35, also known as M12x35 large head coach bolt or Heavy duty carriage bolt M12-35, is a robust fastening solution designed for structural applications. Featuring a 12mm diameter shank and 35mm length, it integrates a domed head with a square neck to prevent rotation during installation. Manufactured from grade 8.8 carbon steel with zinc-plated finish, it offers 800-1000 MPa tensile strength and operates within -30°C to 150°C. The large head design ensures 24mm contact diameter for enhanced load distribution, while the square neck fits 19mm standard wrench slots. Ideal for heavy machinery, agricultural equipment, and steel frame assemblies, this bolt supports axial loads up to 15kN. Its corrosion-resistant coating provides IP67 protection, suitable for outdoor and industrial environments. Key advantages include vibration resistance and rapid assembly, though its protruding head may limit use in flush-mount applications. Compatible with M12 nuts and requires 90-110 Nm torque for secure fastening.
Parameter Specification
Product Type Big head carriage bolt M12x35
Alternative Designation M12x35 large head coach bolt / Heavy duty carriage bolt M12-35
Thread Diameter M12
Nominal Length 35 mm
Head Style Oversized domed head with square neck
Drive Type Square shank under head
Material Grade Class 8.8 carbon steel
Surface Treatment Hot-dip galvanized (minimum 50μm coating)
Tensile Strength ≥ 800 MPa
Thread Pitch 1.75 mm standard metric coarse thread
Head Diameter 24 mm ±0.5
Head Height 8 mm ±0.3
Standards Compliance DIN 603, ISO 7413
Torque Specification 90-110 Nm (dry installation)
Application Temperature -20°C to +150°C
question:If a product is found to be refurbished and malfunctions, how will after-sales service handle it?
answer:We offer free replacements or refunds upon verification. All refurbished products are clearly labeled and include warranty coverage.
question:Why is shipping so expensive? Are there cheaper delivery options?
answer:Shipping costs depend on carrier rates. We provide economy options upon request, though delivery times may vary.
question:Why can other suppliers source discontinued models you can't offer?
answer:Suppliers may access niche inventories or substitutes. We prioritize current models with reliable stock and support.
question:Can the company ensure stable product supply?
answer:Yes, we maintain long-term partnerships and strict inventory management.
question:Why is there a transaction fee?
answer:The fee covers payment processing and administrative costs for secure transactions.
question:If a product is found to be refurbished and malfunctions, how will after-sales service handle it?
answer:We offer free replacements or refunds upon verification. All refurbished products are clearly labeled and include warranty coverage.
question:Why is shipping so expensive? Are there cheaper delivery options?
answer:Shipping costs depend on carrier rates. We provide economy options upon request, though delivery times may vary.
question:Why can other suppliers source discontinued models you can't offer?
answer:Suppliers may access niche inventories or substitutes. We prioritize current models with reliable stock and support.
question:Can the company ensure stable product supply?
answer:Yes, we maintain long-term partnerships and strict inventory management.
question:Why is there a transaction fee?
answer:The fee covers payment processing and administrative costs for secure transactions.
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