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Home Product M8*70 Half Thread External Hex Bolt High Strength Galvanized Steel DIN 933 Fastener
Half thread external hexagonal bolt M8*70

M8*70 Half Thread External Hex Bolt High Strength Galvanized Steel DIN 933 Fastener

M8x70 half thread hex bolt
External hex bolt M8x70
M8x70 hexagon head bolt
Half thread external hexagonal bolt M8*70
M8x70 half thread hex bolt with external hexagon head, partially threaded shank for secure fastening. High-strength External hex bolt M8x70 features durable construction for industrial applications. M8x70 hexagon head bolt combines precision engineering and corrosion resistance.
Categories:Fasteners & Fixings
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Product Description

The M8x70 half thread hex bolt, also known as the External hex bolt M8x70 or M8x70 hexagon head bolt, features a DIN 931-compliant design with a partially threaded 70mm shaft (thread length 35mm) and full M8 diameter. Manufactured from grade 8.8 carbon steel with zinc-plated corrosion resistance, it offers 800 MPa tensile strength. Suitable for mechanical assembly, automotive frameworks, and structural applications, this bolt combines secure fastening through its hexagonal head with 13mm wrench flats and partial threading for precise load distribution. Operating effectively between -30°C to 120°C, it excels in moderate vibration environments but requires sufficient lateral space for tool access. The dual-section design enables simultaneous shear force handling and threaded engagement, though preload accuracy depends on proper torque calibration. Surface coating ensures durability in standard industrial conditions without specialized sealing.
Parameter Specification
Product Name M8x70 Half Thread Hex Bolt
Alternative Designation External Hex Bolt M8x70, M8x70 Hexagon Head Bolt
Thread Size M8 (8mm nominal diameter)
Thread Type Half Thread (Partial Thread)
Thread Length Approx. 30mm (non-threaded shank: 40mm)
Overall Length 70mm ± 1mm
Head Type Hexagon Head (External Hex Drive)
Head Width 13mm (Across Flates)
Head Height 5.3mm
Material Carbon Steel (Grade 8.8)
Tensile Strength 800 MPa
Surface Finish Zinc-plated (5-8µm), Galvanized, or Black Oxide
Thread Standard ISO 4017 / DIN 933 (Partial Thread Variation)
Drive Type 6mm Hex Key (Internal) / 13mm Wrench (External)
Torque Capacity 20-22 Nm (Zinc-plated, dry)
question:Why is there a handling fee?
answer:Handling fees cover transaction and payment processing costs, ensuring secure and efficient order processing.
question:Why are shipping costs high? Are there cheaper options?
answer:Shipping costs depend on weight, destination, and speed. Contact us to explore economy options tailored to your needs.
question:Do you offer discounts for bulk orders?
answer:Yes, we provide volume-based discounts. Share your order details, and we’ll customize a cost-effective solution for you.
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 is there a handling fee?
answer:Handling fees cover transaction and payment processing costs, ensuring secure and efficient order processing.
question:Why are shipping costs high? Are there cheaper options?
answer:Shipping costs depend on weight, destination, and speed. Contact us to explore economy options tailored to your needs.
question:Do you offer discounts for bulk orders?
answer:Yes, we provide volume-based discounts. Share your order details, and we’ll customize a cost-effective solution for you.
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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