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Home Product Big Head Carriage Bolt M12*70 Coach Bolt Heavy-Duty Galvanized Steel DIN 603 for Construction Machinery
Big head carriage bolt M12*70

Big Head Carriage Bolt M12*70 Coach Bolt Heavy-Duty Galvanized Steel DIN 603 for Construction Machinery

Big head M12x70 carriage bolt
Large head carriage bolt M12x70
M12x70 heavy duty carriage bolt
Big head carriage bolt M12*70
Big head M12x70 carriage bolt designed for heavy-duty fastening. Large head carriage bolt M12x70 with domed top ensures secure grip, zinc-plated finish resists corrosion. Suitable for construction, machinery, and woodworking projects requiring M12x70 heavy duty carriage bolt strength.
Categories:Fasteners & Fixings
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Product Description

The Big head M12x70 carriage bolt is a heavy-duty fastening solution designed for industrial applications requiring high tensile strength and secure mounting. This large head carriage bolt M12x70 features a diameter of 12mm, a length of 70mm, and an oversized flat head for enhanced load distribution and grip. Ideal for structural assemblies in construction, machinery, and transportation sectors, it operates within a temperature range of -40°C to +120°C. Crafted from grade 8.8 steel with corrosion-resistant coating, the M12x70 heavy-duty carriage bolt ensures durability in harsh environments. Its hexagonal head design simplifies installation using standard tools. While lacking integrated electronics, communication interfaces, or power requirements, its primary advantages include exceptional shear resistance and vibration-proof performance. Limitations include non-adjustability post-installation and compatibility only with M12-nut systems.
Parameter Specification
Product Model Big head M12x70 carriage bolt, Large head carriage bolt M12x70, M12x70 heavy duty carriage bolt
Head Type Oversized domed head with square neck
Nominal Diameter M12 (12 mm)
Thread Length Full body threading
Shank Length 70 mm
Thread Pitch 1.75 mm (Standard coarse thread)
Material Grade 5 carbon steel / AISI 304 stainless steel
Tensile Strength 800 MPa (Grade 5), 500 MPa (Stainless)
Surface Finish Hot-dip galvanized (55-80μm) / Plain / Zinc plated
Head Diameter 24.0 mm
Square Neck Dimensions 19.5 mm x 19.5 mm
Drive Type Hexagonal nut engagement
Standards Compliance ASME B18.5, DIN 603, ISO 7412
Proof Load 74.2 kN (Grade 5 steel)
Torque Specification 95-110 Nm (Dry steel-to-steel)
question:Do you accept payment after delivery?
answer:Full payment is required in advance to ensure prompt order processing and shipment.
question:Why can other suppliers source discontinued models you can't provide?
answer:We prioritize quality and reliability by only offering current models, while others may sell leftover stock.
question:What shipping methods do you offer?
answer:We support DHL, Fedex, UPS, and other major carriers for fast and secure global delivery.
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:Do you accept payment after delivery?
answer:Full payment is required in advance to ensure prompt order processing and shipment.
question:Why can other suppliers source discontinued models you can't provide?
answer:We prioritize quality and reliability by only offering current models, while others may sell leftover stock.
question:What shipping methods do you offer?
answer:We support DHL, Fedex, UPS, and other major carriers for fast and secure global delivery.
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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