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Home Product Big Head Carriage Bolt M8*80 Coach Bolt, Zinc Plated G5, Construction Machinery
Big head carriage bolt M8*80

Big Head Carriage Bolt M8*80 Coach Bolt, Zinc Plated G5, Construction Machinery

big head M8x80 carriage bolt
M8x80 hex carriage bolt
heavy duty big head bolt
Big head carriage bolt M8*80
Heavy-duty big head M8x80 carriage bolt with M8x80 hex design. Constructed from zinc-plated steel for superior strength, ideal for machinery, construction, and woodworking. Combines robust big head durability with M8x80 hex carriage bolt functionality for secure, high-load applications.
Categories:Fasteners & Fixings
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Product Description

The big head M8x80 carriage bolt, also known as M8x80 hex carriage bolt, is a heavy-duty fastening solution designed for structural applications requiring robust load-bearing capacity. This galvanized carbon steel bolt features a 13mm oversized domed head for enhanced surface contact and a 6mm hexagonal drive interface for secure tool engagement. With a total length of 80mm and 8mm thread diameter, it accommodates material thicknesses up to 65mm when used with standard washers. The cold-forged construction ensures tensile strength exceeding 800 MPa, suitable for temperatures ranging from -30°C to 150°C. Commonly deployed in construction frameworks, industrial machinery assembly, and transportation equipment manufacturing, its ribbed neck beneath the head provides anti-rotation stability. While offering exceptional shear resistance, the bolt's large head profile may require pre-drilled countersinking in space-constrained installations. The zinc-plated surface treatment delivers corrosion protection for outdoor applications across civil engineering and heavy equipment sectors.
Parameter Specification
Product Type Big Head Carriage Bolt (Heavy Duty)
Designation M8x80 Hex Carriage Bolt
Nominal Diameter 8 mm (M8)
Thread Length Full-length threading
Overall Length 80 mm
Head Type Oversized Square Neck & Hex Head
Material Grade Carbon Steel Class 8.8 / A2/A4 Stainless Steel
Surface Treatment Hot-dip Galvanized / Zinc Plated / Plain
Tensile Strength 800 MPa (Class 8.8)
Torque Capacity 20-24 Nm (Dry)
Compliance Standard DIN 603 / ISO 7412
Applications Structural connections, Heavy machinery, Automotive frames
question:Can the company provide upgraded or alternative models?
answer:Yes, we can offer upgraded or alternative models. Please specify requirements for options.
question:Why are the products received with labels cut?
answer:Label removal is a common practice to protect product origin. It's part of standard identification protection measures.
question:Do you accept payment after delivery?
answer:Currently, we only accept advance payment or LC. Post-delivery payment isn't available.
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:Can the company provide upgraded or alternative models?
answer:Yes, we can offer upgraded or alternative models. Please specify requirements for options.
question:Why are the products received with labels cut?
answer:Label removal is a common practice to protect product origin. It's part of standard identification protection measures.
question:Do you accept payment after delivery?
answer:Currently, we only accept advance payment or LC. Post-delivery payment isn't available.
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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