M8x35 Big Head Carriage Bolt, Heavy-Duty HD Series Industrial Fastener, Zinc-Plated BrandName

Big head M8x35 bolt

Carriage bolt M8x35

Heavy duty coach bolt

Big head carriage bolt M8*35

Big head M8x35 bolt, also called Carriage bolt M8x35 or Heavy duty coach bolt, features a large domed head and square neck for rotation resistance. Designed for durable construction in woodworking, metal frameworks, and structural applications. M8x35 size ensures secure fastening with heavy-duty strength and reliability.

Specification

SEODescription

The Big head M8x35 bolt, also known as a Carriage bolt M8x35 or Heavy duty coach bolt, features a domed head with a square neck to prevent rotation during installation. Designed for robust applications, this 8mm diameter, 35mm length bolt offers a tensile strength of 8.8 grade (minimum 800 MPa), with a zinc-plated finish for corrosion resistance. Its square neck securely embeds into materials like wood or metal, eliminating the need for additional locking components. Suitable for structural connections in construction, machinery assembly, and agricultural equipment, it operates effectively in temperatures ranging from -20°C to +120°C. Advantages include vibration resistance and simplified installation, though its non-recessed head may limit usage in flush-surface applications. Compatible with M8 nuts and standard 13mm wrench sizes.

SEOSpecification

Parameter	Specification
Product Model	Big head carriage bolt M8x35
Thread Diameter	M8 (8mm)
Shank Length	35mm
Head Type	Domed big head with square neck
Thread Pitch	1.25mm standard coarse
Material Grade	Carbon steel Grade 5.8
Surface Treatment	Zinc-plated (5-8μm)
Application Standard	ASTM A307 / DIN 603
Shear Strength	340 MPa (min)
Tensile Strength	500 MPa (min)
Drive Type	Square drive under head
Usage	Heavy duty coach bolt for wood-to-metal fastening

SEOQandA

question:Can the company provide technical selection services?
answer:Yes, we offer expert technical support to help clients choose optimal products, backed by 20+ years of industry experience.
question:Why should I purchase from your company?
answer:As Asia's leading industrial automation supplier with 20 years' history, we guarantee quality, reliability, and 85% repeat clients.
question:Received goods with labels removed. What happened?
answer:Label removal may comply with logistics/customs regulations. Product specs remain intact; contact us for immediate assistance.

SEOQandA_Product

question:Difficulty during installation due to misalignment.
answer:Ensure proper alignment and use a lubricant on threads for smoother installation.
question:Bolt loosening under vibration.
answer:Apply thread-locking adhesive or use a spring washer to maintain tension.
question:Incorrect bolt length causing inadequate grip.
answer:Verify required length; replace with M8x35 if specifications match.
question:Head stripping during tightening.
answer:Use a correctly sized wrench and avoid over-torquing to prevent damage.
question:Corrosion in harsh environments.
answer:Opt for stainless steel or galvanized bolts for improved corrosion resistance.