Big head carriage bolt M6*90 - Heavy Hex Carriage Bolt [Brand] Series 3000 Industrial Fastener

Big head carriage bolt M6x90

Large head coach bolt M6x90

M6x90mm hex carriage bolt

Big head carriage bolt M6*90

Big head carriage bolt M6x90, also referred to as Large head coach bolt M6x90 or M6x90mm hex carriage bolt, features a wide rounded head, square neck, and 90mm shank length for secure fastening in woodworking, construction, and furniture applications. Zinc-plated steel construction ensures corrosion resistance.

Specification

SEODescription

The Big head carriage bolt M6x90 (also known as Large head coach bolt M6x90 or M6x90mm hex carriage bolt) is a heavy-duty fastener featuring a 13mm diameter domed head with integrated square neck. With a 6mm shaft diameter and 90mm length (thread length 50mm), it's crafted from grade 8.8 carbon steel with zinc plating, offering 800MPa tensile strength and 40N·m torque capacity. Designed for structural applications in construction, automotive, and furniture industries, its temperature tolerance spans -30°C to +120°C. The square neck prevents rotation during installation, while the enlarged head provides superior load distribution. Key advantages include vibration resistance and corrosion protection, though its non-recessed head may require specialized installation tools in space-constrained applications. Compatible with standard M6 nuts and 10mm hex wrenches.

SEOSpecification

Parameter	Specification
Product Model	Big head carriage bolt M6x90
Alternative Names	Large head coach bolt M6x90, M6x90mm hex carriage bolt
Thread Size	M6 (6mm diameter)
Overall Length	90mm ±1mm tolerance
Head Type	Domed enlarged circular head
Head Diameter	17mm ±0.5mm
Square Neck Height	3mm protrusion under head
Drive Type	Hexagonal head (13mm across flats)
Thread Pitch	1.0mm standard coarse thread
Material Grade	Carbon steel Grade 8.8
Surface Finish	Hot-dip galvanized (5-8μm coating)
Torque Capacity	20-22 N·m maximum tightening torque
Standards Compliance	DIN 603 / ISO 10509 specifications

SEOQandA

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SEOQandA_Product

question:Difficulty aligning bolt during installation.
answer:Pre-drill holes or use alignment jigs for precise positioning.
question:Bolt loosening under vibration.
answer:Apply thread-locking adhesive or use lock washers to secure fastening.
question:Corrosion in humid environments.
answer:Opt for stainless steel or galvanized bolts to resist corrosion.
question:Head stripping during tightening.
answer:Use a properly sized wrench and adhere to recommended torque values.
question:Insufficient thread engagement.
answer:Ensure bolt length allows at least 1.5x diameter of thread engagement.