M10*90 Big Head Carriage Bolt Heavy-Duty Zinc Plated Industrial Fastener Hardware

Big head carriage bolt M10x90

M10x90 coach bolt

Large head coach bolt M10x90

Big head carriage bolt M10*90

Big head carriage bolt M10x90, also known as M10x90 coach bolt or Large head coach bolt M10x90, designed for heavy-duty applications. Features a square neck to prevent rotation and a large head for enhanced load distribution. Durable steel construction with zinc-plated finish.

Specification

SEOQandA_Product

question:How to prevent M10*90 carriage bolt from loosening under vibration?
answer:Apply thread-locking adhesive or use a lock washer to secure the bolt.
question:Why is the M10*90 bolt difficult to install?
answer:Check for thread damage; use lubrication or realign components properly.
question:How to avoid galvanic corrosion with M10*90 carriage bolt?
answer:Use compatible materials or insulating spacers between dissimilar metals.
question:Why does the carriage bolt head spin during tightening?
answer:Ensure the square neck is properly seated in a pre-drilled square hole.
question:How to confirm M10*90 bolt length suitability for application?
answer:Measure grip length; ensure threads engage fully without excessive protrusion.

SEODescription

The Big head carriage bolt M10x90, also known as M10x90 coach bolt or Large head coach bolt M10x90, features a 10mm diameter shank with 90mm length and an oversized domed head for enhanced load distribution. Constructed from grade 8.8 carbon steel with hot-dip galvanized coating, it offers 800 MPa tensile strength and 640 MPa yield strength. Designed for structural applications in construction, machinery assembly, and transportation equipment, this bolt excels in high-vibration environments due to its square neck anti-rotation feature. The large head design reduces surface pressure on connected materials while requiring greater installation clearance. Operating temperature ranges from -50°C to +150°C, suitable for outdoor and industrial settings. Key advantages include superior shear resistance and corrosion protection, though its weight and head size may limit use in space-constrained applications.

SEOSpecification

Parameter	Specification
Product Model	Big head carriage bolt M10x90 / M10x90 coach bolt / Large head coach bolt M10x90
Diameter (D)	M10 (10mm)
Length (L)	90mm
Head Type	Oversized domed head with square neck
Thread Length	Full thread (excluding head)
Material	Carbon steel Grade 4.8/8.8 or Stainless Steel A2/A4
Surface Treatment	Zinc-plated, Hot-dip galvanized, or Plain
Square Neck Dimensions	12mm x 12mm (nominal)
Head Diameter	20mm ±0.5mm
Drive Type	Hexagonal nut drive (requires separate nut)
Standards Compliance	DIN 603, ISO 10511, ASME B18.5
Torque Capacity	40-55 Nm (Grade 8.8)
Temperature Range	-20°C to +120°C (zinc-plated)
Applications	Wood-to-metal fastening, structural connections, agricultural machinery

SEOQandA

question:What is the warranty?
answer:Our warranty covers material and workmanship defects for 1 year, extendable based on product type. Quality assurance guaranteed.
question:Why choose us for purchase?
answer:Asia's leading industrial automation trader with 20+ years' expertise, trusted quality, 85% repeat clients, and unmatched reliability.
question:Do you have a professional product selection engineering team?
answer:Yes, our specialized engineering team rigorously selects products meeting industry standards and client needs for optimal performance.