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Home Product M8x20 Cylindrical Head Hex Socket Screw - DIN 912 Stainless Steel Allen Cap Bolt
Cylindrical head hexagon socket screws M8*20

M8x20 Cylindrical Head Hex Socket Screw - DIN 912 Stainless Steel Allen Cap Bolt

M8x20 hex socket screw
DIN 912 Allen screw
M8 hex cap bolt
Cylindrical head hexagon socket screws M8*20
M8x20 hex socket screw, DIN 912 Allen screw, M8 hex cap bolt. Metric cylindrical head fastener with internal hex drive and ISO 4762 standard. Grade 12.9 alloy steel, black oxide finish. Thread length 20mm, full threading. Heavy-duty industrial applications.
Categories:Fasteners & Fixings
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Product Description

The M8x20 hex socket screw, compliant with DIN 912 Allen screw standards, features a cylindrical head design for low-profile installation using a hex key. This M8 hex cap bolt is constructed from high-grade steel (ISO 4762) with a tensile strength of 8.8/10.9/12.9 grade options and available in zinc-plated or stainless steel A2/A4 finishes. With a thread length of 20mm and a 6mm hex socket, it provides 20-24 Nm recommended tightening torque. Operating in -50°C to +250°C (zinc) or -200°C to +400°C (stainless), this fastener suits automotive, machinery, and structural applications. Advantages include corrosion resistance, vibration tolerance, and space-saving design, though installation requires precise torque control to prevent head stripping. The 13mm head diameter ensures compatibility with standard tooling.
Parameter Specification
Product Model M8x20 hex socket screw
Standard DIN 912 Allen screw
Thread Size M8
Length 20 mm
Head Type Cylindrical with hex socket
Drive Type Hex key (Allen) drive
Material Stainless steel A2-70 / Carbon steel 8.8
Surface Treatment Zinc-plated / Black oxide / Plain
Thread Pitch 1.25 mm (coarse thread)
Key Size 5 mm hex key
Head Diameter 12.73 mm
Torque Capacity 14.5 N·m (8.8 grade steel)
Alternate Designation M8 hex cap bolt
question:Can the company provide technical selection services?
answer:Yes, we offer technical selection guidance by assessing your requirements and recommending optimal solutions to ensure performance and compatibility.
question:Can the company ensure stable supply of products?
answer:We maintain reliable supply chains with vetted suppliers and buffer stock to guarantee consistent product availability and on-time delivery.
question:How does after-sales handle faults caused by refurbished products?
answer:We strictly supply new, certified products. If confirmed as refurbished, we replace it immediately with genuine items and investigate the source.
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:Can the company provide technical selection services?
answer:Yes, we offer technical selection guidance by assessing your requirements and recommending optimal solutions to ensure performance and compatibility.
question:Can the company ensure stable supply of products?
answer:We maintain reliable supply chains with vetted suppliers and buffer stock to guarantee consistent product availability and on-time delivery.
question:How does after-sales handle faults caused by refurbished products?
answer:We strictly supply new, certified products. If confirmed as refurbished, we replace it immediately with genuine items and investigate the source.
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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