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Home Product M8*70 Hex Head Bolts High-Strength Galvanized Fasteners for Automotive Machinery Construction Assembly
Metric external hexagonal bolts M8*70

M8*70 Hex Head Bolts High-Strength Galvanized Fasteners for Automotive Machinery Construction Assembly

M8x70 hex bolts
Metric hex head bolts
External hexagon bolts
Metric external hexagonal bolts M8*70
Metric M8x70 hex bolts, external hexagon design with ISO/DIN compliant standards. Made from high-strength steel, ideal for industrial machinery and construction applications. Corrosion-resistant finish ensures durability and reliable fastening performance.
Categories:Fasteners & Fixings
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Product Description

The M8x70 hex bolts are metric hex head bolts with a full-threaded shank, designed to ISO 4014 standards. These external hexagon bolts feature an 8 mm nominal diameter, 70 mm total length, 13 mm hex head width, and a pitch of 1.25 mm. Constructed from grade 8.8 carbon steel with optional zinc plating or galvanized coatings, they offer tensile strength up to 800 MPa. Suitable for mechanical engineering, automotive assembly, and structural applications, these bolts operate reliably in temperature ranges of -50°C to +150°C and withstand vibration resistance up to 20 m/s². Advantages include precise thread engagement for load distribution and standardized wrench compatibility, though their fixed length may require spacers in deep installations. Typical torque specifications range from 21-28 Nm when lubricated.
Parameter Specification
Thread Size M8x1.25
Nominal Length 70 mm
Thread Length 12 mm (1.5d)
Head Type External Hexagon
Head Width 13 mm (Across Flats)
Material Grade ISO 898-1 Class 8.8 / A2-70
Surface Finish Zinc Plated/Plain/Dacromet
Tensile Strength 800 MPa (Class 8.8)
Proof Load 580 MPa
Standards Compliance DIN 931/933, ISO 4014/4017
Drive Type Hex Key/Wrench Compatible
Corrosion Resistance Grade-Specific Protection
Working Temperature -50°C to +250°C
Torque Requirements 20-25 Nm (Dry Thread)
question:How is the after-sales handled if a refurbished product malfunctions?
answer:Upon confirmation, we provide free replacement or refund based on warranty terms.
question:Why is shipping expensive? Are there cheaper options?
answer:Costs vary by region/weight. We optimize with discounted carriers upon request.
question:Can goods be declared at lower values for export?
answer:Legally compliant declarations are mandatory. We ensure accurate documentation.
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:How is the after-sales handled if a refurbished product malfunctions?
answer:Upon confirmation, we provide free replacement or refund based on warranty terms.
question:Why is shipping expensive? Are there cheaper options?
answer:Costs vary by region/weight. We optimize with discounted carriers upon request.
question:Can goods be declared at lower values for export?
answer:Legally compliant declarations are mandatory. We ensure accurate documentation.
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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