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Home Product Big Head Carriage Bolt M8*150 | Galvanized Steel, Heavy-Duty Construction Fastener, Furniture Assembly Lag Bolt
Big head carriage bolt M8*150

Big Head Carriage Bolt M8*150 | Galvanized Steel, Heavy-Duty Construction Fastener, Furniture Assembly Lag Bolt

Big head carriage bolt M8x150
Large dome coach bolt 150mm
Heavy duty M8 carriage bolt
Big head carriage bolt M8*150
Big head carriage bolt M8x150, also known as Large dome coach bolt 150mm, is a heavy duty M8 carriage bolt designed for structural applications. Features a domed head with square neck for secure fastening in wood or metal surfaces. Ideal for construction, agricultural and industrial uses.
Categories:Fasteners & Fixings
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Product Description

The Big head carriage bolt M8x150, commonly referred to as the Large dome coach bolt 150mm, is a heavy-duty M8 carriage bolt engineered for high-strength applications in construction, machinery assembly, and industrial frameworks. With an M8 (8mm) diameter and 150mm shaft length, it features a prominent dome head for superior load distribution and vibration resistance. Crafted from grade 8.8 carbon steel and zinc-plated for corrosion protection, it operates reliably in temperatures from -30°C to 120°C. The partial threading ensures secure fastening with compatible nuts, ideal for wood-to-metal joints or structural connections. Its large head design minimizes surface damage during installation but may require specialized tools for precise torque adjustment. Designed for longevity in demanding environments, this bolt excels in securing heavy equipment, scaffolding, and timber structures, offering exceptional shear strength and durability under extreme mechanical stress.
Parameter Specification
Product Type Big head carriage bolt M8x150, Large dome coach bolt 150mm, Heavy duty M8 carriage bolt
Thread Size M8 (Metric coarse thread)
Length 150 mm (under head to tip)
Head Type Domed with square neck
Material Carbon steel (Grade 8.8)
Surface Finish Hot-dip galvanized
Standard ISO 14434 compliant
Head Diameter 16.0 mm
Head Height 8.0 mm
Thread Length 16 mm (minimum)
Tensile Strength ≥800 MPa
Yield Strength ≥640 MPa
Hardness 22-32 HRC
Application Structural connections, machinery, outdoor use
question:How do you handle shipping?
answer:We support DHL, Fedex, UPS, and other major carriers for global shipments.
question:What is covered under warranty?
answer:The warranty covers manufacturing defects for 12 months from the date of purchase.
question:How do you resolve issues with refurbished units?
answer:If a refurbished unit fails, we offer a free replacement or full refund upon return.
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:How do you handle shipping?
answer:We support DHL, Fedex, UPS, and other major carriers for global shipments.
question:What is covered under warranty?
answer:The warranty covers manufacturing defects for 12 months from the date of purchase.
question:How do you resolve issues with refurbished units?
answer:If a refurbished unit fails, we offer a free replacement or full refund upon return.
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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