M12*100 Big Head Carriage Bolt - Heavy Duty Coach Bolt, Zinc Plated, Industrial Grade

Big Head Carriage Bolt M12x100

M12x100 Carriage Bolt

Large Head Coach Bolt 100mm

Big head carriage bolt M12*100

Big Head Carriage Bolt M12x100, also called M12x100 Carriage Bolt or Large Head Coach Bolt 100mm, features a domed head with square neck for anti-rotation, ideal for woodworking and construction applications.

Specification

SEODescription

The Big Head Carriage Bolt M12x100, also known as the M12x100 Carriage Bolt or Large Head Coach Bolt 100mm, is a heavy-duty fastening component designed for structural applications requiring enhanced load distribution. Featuring a domed, oversized head (typically 24mm diameter) and a square neck to prevent rotation during installation, this bolt has a shank diameter of 12mm and total length of 100mm. Constructed from grade 8.8 carbon steel with optional zinc-plated or hot-dip galvanized finishes, it operates effectively across temperatures from -20°C to 120°C, suitable for outdoor machinery, construction frameworks, and agricultural equipment assembly. Its broad head design enables direct connection to wood, metal, or composite materials without requiring separate washers, though the large profile may limit use in space-constrained installations. Key advantages include high shear strength (up to 640 MPa) and vibration resistance, while potential drawbacks involve increased weight and the need for specialized installation tools in high-torque scenarios.

SEOSpecification

Parameter	Specification
Product Model	Big Head Carriage Bolt M12x100
Alternate Names	M12x100 Carriage Bolt, Large Head Coach Bolt 100mm
Thread Diameter	M12 (12mm)
Shank Length	100mm
Head Type	Carriage Bolt with Large/Over-sized Head
Material Grade	Stainless Steel A2/A4 or Carbon Steel
Surface Treatment	Hot-dip Galvanized/Zinc Plated/Plain
Standard Compliance	DIN 603, ISO 10509, ASTM A307
Tensile Strength	Grade 4.8 (400MPa) / Grade 5.8 (500MPa)
Thread Type	Full Thread (ISO Metric Coarse)
Head Diameter	22mm ±0.5mm
Head Height	10mm ±0.3mm
Drive Type	External Hexagon Under Head

SEOQandA

question:Do you accept payment after delivery?
answer:We confirm payment terms upfront to ensure mutual trust. Over 85% of our clients are repeat customers, reflecting our reliability and product quality.
question:Do you provide technical selection support?
answer:Yes, our expert team offers tailored technical guidance to help you choose optimal products for compatibility and operational efficiency.
question:Why choose your company?
answer:As Asia's leading industrial automation supplier with 20+ years' experience, we guarantee quality, prioritize credibility, and maintain 85% repeat clientele.

SEOQandA_Product

question:Difficulty in installation due to oversized head.
answer:Use proper wrench/socket size; verify bolt specifications.
question:Bolt loosening under vibration or load.
answer:Apply thread locker or lock washer; ensure correct torque.
question:Corrosion in harsh environments.
answer:Use stainless steel or galvanized bolts; apply anti-corrosion coatings.
question:Inadequate thread engagement length.
answer:Ensure minimum 1x diameter thread engagement; check hole depth.
question:Head damage during tightening.
answer:Use correct tool fit; avoid over-torquing; inspect bolt grade.