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Home Product M12*40 Half Thread External Hex Bolt, Partial Thread Hex Head, Stainless Steel Grade 8.8, Construction Machinery Fastener
Half thread external hexagonal bolt M12*40

M12*40 Half Thread External Hex Bolt, Partial Thread Hex Head, Stainless Steel Grade 8.8, Construction Machinery Fastener

M12x40 hex bolt
External Hex Bolt Part Thread
DIN 931 M12
Half thread external hexagonal bolt M12*40
External Hex Bolt Part Thread, M12x40 hex bolt compliant with DIN 931 M12 standard. Half-threaded design combines shear strength and adjustable fastening for versatile applications.
Categories:Fasteners & Fixings
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Product Description

The M12x40 hex bolt, designed as per DIN 931 M12 standard, features an External Hex Bolt Part Thread configuration with a half-threaded shank. This steel bolt has a diameter of 12 mm, total length of 40 mm, and a partially threaded section optimized for secure fastening in structural applications. It offers a tensile strength grade of 8.8, corrosion-resistant zinc plating, and a hex head requiring 19 mm wrench size. Ideal for machinery, automotive, and construction industries, its advantages include high shear resistance, standardized compatibility, and easy installation. Limitations include reduced thread engagement compared to full-thread variants. Operating temperature ranges from -20°C to 120°C, suitable for general industrial environments requiring reliable mechanical joints.
Parameter Specification
Product Type Half Thread External Hexagonal Bolt
Designation DIN 931 M12
Thread Size M12x1.75
Nominal Length 40 mm
Head Style External Hexagon
Thread Type Metric Coarse
Threaded Portion Partial Thread (DIN 931)
Material Grade Class 8.8
Tensile Strength 800 MPa
Surface Finish Zinc Plated (Standard)
Head Width (Across Flats) 19 mm
Head Height 7.5 mm
Thread Length 22 mm
Shank Diameter 12 mm
Pitch 1.75 mm
Standards Compliance DIN 931, ISO 4014
question:Why choose us?
answer:As Asia's leading industrial automation trader with 20+ years, we ensure reliable quality, uphold strong reputation, and 85% clients are repeats.
question:How is shipping handled?
answer:We support DHL, Fedex, UPS, and other major carriers for fast, reliable global delivery.
question:What is the warranty?
answer:Products include 1-year warranty against manufacturing defects. Valid proof of purchase required.
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 choose us?
answer:As Asia's leading industrial automation trader with 20+ years, we ensure reliable quality, uphold strong reputation, and 85% clients are repeats.
question:How is shipping handled?
answer:We support DHL, Fedex, UPS, and other major carriers for fast, reliable global delivery.
question:What is the warranty?
answer:Products include 1-year warranty against manufacturing defects. Valid proof of purchase required.
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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