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Home Product Hexagonal Flange Screw M8*30 DIN 6921 Stainless Steel A2-70 Heavy-Duty Automotive Fastener
Hexagonal flange screws

Hexagonal Flange Screw M8*30 DIN 6921 Stainless Steel A2-70 Heavy-Duty Automotive Fastener

M8 hex flange screws
Hexagonal flange bolts M8x30
DIN 6921 flange screws
Hexagonal flange screws M8*30
M8 hex flange screws (Hexagonal flange bolts M8x30) conforming to DIN 6921 flange screws standard. Made from high-strength steel with zinc-plated finish. Integrated flange design eliminates need for separate washers. Suitable for heavy-duty machinery, automotive components, and structural applications requiring vibration resistance. Metric coarse thread (8mm diameter x 30mm length). Combines bolt and washer functionality with hexagonal drive for secure torque transmission.
Categories:Fasteners & Fixings
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Product Description

The M8 hex flange screws (Hexagonal flange bolts M8x30) are precision-engineered fasteners compliant with DIN 6921 flange screws standards. Designed for robust industrial applications, these screws feature an integrated hexagonal flange head with a nominal diameter of 8mm and a length of 30mm. Typically constructed from high-grade steel (strength class 8.8 or 10.9), they offer excellent tensile strength and corrosion resistance with optional zinc-plated or dacromet coatings. The flange diameter measures approximately 17mm, providing enhanced load distribution and vibration resistance. Ideal for automotive, machinery, and construction sectors, these screws operate reliably in temperatures ranging from -50°C to +120°C. Advantages include reduced need for separate washers and secure clamping force, though installation may require specific torque tools. Their standardized design ensures compatibility with DIN 6921-specified assemblies.
Parameter Specification
Thread Size M8 (8mm nominal diameter)
Thread Pitch 1.25mm standard coarse pitch
Length (L) 30mm under-head measurement
Head Type Hexagonal flange (integrated washer)
Flange Diameter 17.6mm ±0.3mm
Flange Thickness 3.0mm ±0.2mm
Across Flats (S) 13mm (ISO 4762 hex key)
Material Grade Class 8.8 steel / A2-70 stainless steel
Surface Finish Zinc-plated (5-8μm) or Plain
Torque Value 20-22Nm (lubricated) / 28-30Nm (dry)
Standards DIN 6921 / ISO 1665 compliant
Hex Height (H) 5.7mm ±0.3mm
Flange Contact Surface Knurled serrations (360°)
Temperature Range -50°C to +120°C (zinc plated)
question:Do you accept payment after shipment?
answer:We require full payment before processing any shipment orders.
question:Can shipments be declared at a lower value?
answer:Declared values must reflect actual transaction amounts; undervaluing is not permitted.
question:Do you offer product customization?
answer:Customization is available for bulk orders with additional fees and extended lead times.
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:Do you accept payment after shipment?
answer:We require full payment before processing any shipment orders.
question:Can shipments be declared at a lower value?
answer:Declared values must reflect actual transaction amounts; undervaluing is not permitted.
question:Do you offer product customization?
answer:Customization is available for bulk orders with additional fees and extended lead times.
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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