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Home Product M20*70 Half Thread Hex Bolt, External Hexagonal Screw, DIN 933, Heavy-Duty Construction, Galvanized Steel
Half thread external hexagonal bolt M20*70

M20*70 Half Thread Hex Bolt, External Hexagonal Screw, DIN 933, Heavy-Duty Construction, Galvanized Steel

M20x70 hex bolt
Half thread hex bolt
External hex head M20
Half thread external hexagonal bolt M20*70
M20x70 hex bolt featuring half thread design and external hex head. Ideal for applications requiring partial threading with durable hexagonal drive.
Categories:Fasteners & Fixings
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Product Description

The M20x70 hex bolt is a high-strength fastener featuring an external hex head M20 with a half-thread hex bolt design. This bolt has a nominal diameter of 20mm, a total length of 70mm, and a partially threaded shank optimized for secure clamping in applications requiring balanced grip and adjustability. The external hex head enables tool engagement with standard 30mm wrench sizes. Constructed from grade 8.8 steel, it operates within -50°C to +250°C and withstands corrosion through zinc-plated or hot-dip galvanized finishes. Widely used in structural engineering, machinery assembly, and automotive industries, its half-thread configuration reduces material stress while maintaining joint integrity. Advantages include vibration resistance and ease of installation, though limited thread engagement may restrict use in high-shear scenarios. Thread length typically spans 35-40mm, complementing the unthreaded shoulder for precise alignment in bolted connections.
Parameter Specification
Thread Diameter M20
Total Length 70 mm
Thread Type Half Thread (Partial Threading)
Hex Head Size 30 mm (Across Flats)
Material Carbon Steel (Grade 8.8)
Surface Treatment Zinc Plated
Thread Pitch 2.5 mm
Thread Length 35 mm (±2 mm)
Drive Type External Hexagon
Standard Compliance ISO 4014 / DIN 931
question:Why is there a service fee?
answer:The service fee covers transaction processing, payment gateways, and administrative costs required for secure international trade operations.
question:Why are shipping costs high? Are there cheaper options?
answer:Shipping costs vary by carrier and destination. We offer economy shipping options for lightweight or non-urgent shipments. Contact us for tailored solutions.
question:Can the company ensure stable supply?
answer:Yes, we maintain reliable supply chains and buffer inventory to ensure consistent product availability and timely delivery to clients.
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 service fee?
answer:The service fee covers transaction processing, payment gateways, and administrative costs required for secure international trade operations.
question:Why are shipping costs high? Are there cheaper options?
answer:Shipping costs vary by carrier and destination. We offer economy shipping options for lightweight or non-urgent shipments. Contact us for tailored solutions.
question:Can the company ensure stable supply?
answer:Yes, we maintain reliable supply chains and buffer inventory to ensure consistent product availability and timely delivery to clients.
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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