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Home Product M10x40 Metric Hex Bolts | Grade 8.8 Steel, DIN 933, Zinc Plated, Automotive Fasteners
Metric external hexagonal bolts M10*40

M10x40 Metric Hex Bolts | Grade 8.8 Steel, DIN 933, Zinc Plated, Automotive Fasteners

Metric Hex Bolts M10x40
External Hex Bolt M10x40
M10x40 Metric Hex Bolts
Metric external hexagonal bolts M10*40
Metric Hex Bolts M10x40, External Hex Bolt M10x40 with standard thread for machinery, construction, and industrial use. Durable M10x40 Metric Hex Bolts made of high-strength steel, zinc-plated surface for corrosion resistance. ISO-compliant dimensions ensure reliable fastening in structural and mechanical assemblies.
Categories:Fasteners & Fixings
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Product Description

The Metric Hex Bolts M10x40 are standardized fasteners designed for heavy-duty mechanical applications, featuring a 10mm nominal diameter and 40mm shank length. These M10x40 Metric Hex Bolts comply with DIN 931/ISO 4014 specifications, offering 8.8 strength grade with a minimum tensile strength of 800 MPa. The External Hex Bolt M10x40 configuration enables direct tool engagement using standard 17mm wrenches, ideal for construction, automotive, and machinery assembly. Surface-treated with zinc plating, they operate reliably across -50°C to +120°C environments with corrosion resistance. Advantages include uniform thread engagement, high shear strength, and vibration resistance, though require precise torque calibration. Typical industrial applications involve structural steel connections, equipment frames, and hydraulic system installations where standardized metric threading is essential.
Parameter Specification
Product Model Metric Hex Bolts M10x40, External Hex Bolt M10x40
Thread Size M10 (10mm nominal diameter)
Thread Pitch 1.5mm standard metric coarse thread
Length 40mm under head measurement
Head Type External hexagonal head
Material Grade Class 8.8 steel (medium carbon)
Tensile Strength 800 MPa minimum
Surface Finish Zinc Plated (5-8μm) or Plain
Standard Compliance ISO 4014, DIN 931, ASME B18.2.3.6M
Wrench Size 17mm hex key/head engagement
Thread Engagement Full thread up to 250°C service temperature
Torque Value 42-47 Nm (dry steel-on-steel)
Applications General machinery, construction, automotive assemblies
question:Why was the product label removed upon receipt?
answer:Labels may be removed due to brand policies or regional compliance. Rest assured, products are authentic but require label modification for legal distribution.
question:How is after-sales handled for refurbished products with malfunctions?
answer:We offer repair, replacement, or refund per warranty terms. Contact our support team with proof of purchase and defect details for prompt resolution.
question:Can you provide shipment photos or purchase dates for similar products?
answer:Due to privacy and contractual obligations, specific details cannot be shared. We confirm all products meet quality standards before shipment.
question:Can the company ensure stable product supply?
answer:Yes, we maintain long-term partnerships and strict inventory management.
question:Why is there a transaction fee?
answer:The fee covers payment processing and administrative costs for secure transactions.
question:Why was the product label removed upon receipt?
answer:Labels may be removed due to brand policies or regional compliance. Rest assured, products are authentic but require label modification for legal distribution.
question:How is after-sales handled for refurbished products with malfunctions?
answer:We offer repair, replacement, or refund per warranty terms. Contact our support team with proof of purchase and defect details for prompt resolution.
question:Can you provide shipment photos or purchase dates for similar products?
answer:Due to privacy and contractual obligations, specific details cannot be shared. We confirm all products meet quality standards before shipment.
question:Can the company ensure stable product supply?
answer:Yes, we maintain long-term partnerships and strict inventory management.
question:Why is there a transaction fee?
answer:The fee covers payment processing and administrative costs for secure transactions.
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