M6*14 Big Head Carriage Bolt (Coach Bolt) Zinc Plated, Grade 8.8, DIN 603 Standard

Big head carriage bolt M6x14

M6x14 coach bolt

Big head coach bolt 14mm

Big head carriage bolt M6*14

Big head carriage bolt M6x14 with hexagonal domed head and square neck, M6x14 coach bolt made of carbon steel, zinc-plated finish. Big head coach bolt 14mm thread length for wood-to-metal fastening, construction, and furniture assembly. DIN 603 compliant design, combines durability with anti-corrosion properties.

Specification

SEODescription

The Big head carriage bolt M6x14 (also known as M6x14 coach bolt or Big head coach bolt 14mm) is a threaded fastener featuring an enlarged domed head with a square neck for anti-rotation installation. Designed with M6 metric thread diameter and 14mm shank length, it typically operates in standard industrial voltage environments (12-24V DC) and withstands temperatures from -20°C to 120°C. Commonly used in machinery assembly, structural framing, and rail applications, this galvanized steel bolt provides corrosion resistance and secure fastening through its integrated square neck design. Its oversized head distributes load effectively but requires precise square-cut pre-drilled holes for proper seating. The zinc-plated surface ensures moderate weather resistance while maintaining electrical conductivity in grounded systems.

SEOSpecification

Parameter	Specification
Product Model	Big head carriage bolt M6x14 / M6x14 coach bolt / Big head coach bolt 14mm
Thread Size	M6 (Metric 6mm)
Shank Length	14mm
Head Type	Large domed carriage head
Material	Carbon steel
Surface Finish	Zinc-plated
Strength Grade	Class 8.8
Standard Compliance	DIN 603
Head Diameter	19mm
Head Height	5mm
Thread Type	Full thread or partial thread (as specified)
Application	Wood-to-metal fastening, structural assemblies

SEOQandA

question:Why can other suppliers find stock for discontinued models you can't provide pricing for?
answer:They may have remaining inventory or alternatives, but we cannot verify authenticity or quality, hence we don't offer them.
question:What is the warranty?
answer:Warranty covers manufacturing defects and material issues, offering repair or replacement within the specified period.
question:How is after-sales handled if a failure reveals the product is refurbished?
answer:If undisclosed, we terminate cooperation and offer refund or replacement per policy after verifying terms.

SEOQandA_Product

question:Bolt loosening under vibration.
answer:Apply thread-locking adhesive or use a lock washer.
question:Incorrect bolt length or diameter.
answer:Verify specifications and replace with correct M6*14 size.
question:Difficulty installing in tight spaces.
answer:Use a slim wrench or socket for head accessibility.
question:Corrosion in harsh environments.
answer:Opt for stainless steel or coated variants.
question:Thread stripping during installation.
answer:Ensure proper alignment and avoid over-tightening.