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Home Product M4*5*8 Fastener | Steel Hex Bolt | Stainless Steel Machine Screw | Hardware Automotive Parts
Carbon steel thin head screws M4*5*8

M4*5*8 Fastener | Steel Hex Bolt | Stainless Steel Machine Screw | Hardware Automotive Parts

M4x5x8 Machine Screw
M4 Hex Socket Cap Bolt
DIN 912 M4 Bolt
M4*5*8
M4x5x8 Machine Screw, also known as M4 Hex Socket Cap Bolt or DIN 912 M4 Bolt, features precision-engineered internal hex drive, full-threaded shank, and standardized dimensions for secure fastening in machinery, automotive, and industrial applications.
Categories:Fasteners & Fixings
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Product Description

The M4x5x8 Machine Screw, also known as an M4 Hex Socket Cap Bolt or DIN 912 M4 Bolt, is a precision-engineered fastener designed for robust mechanical assembly. Featuring a 4mm thread diameter, 5mm shank length, and 8mm total length, it supports high-torque applications across industries like automotive, industrial machinery, and electronics. Compatible with standard M4 hexagonal socket wrenches (Allen key), this ISO 4762/DIN 912-compliant bolt operates in temperature ranges from -50°C to +150°C, suitable for harsh environments. Constructed from grade 12.9 alloy steel with optional stainless steel variants, it offers tensile strengths up to 1220 MPa while maintaining corrosion resistance. Critical for secure panel mounting and structural joints, its internal hex drive design enables flush installations in confined spaces. Requires precise alignment due to its compact head profile. Includes 5mm thread engagement for optimal clamping force distribution.
Thread SizeM4
Head TypeHex Socket Cap
MaterialStainless Steel A2-70 / Carbon Steel 8.8
Thread Pitch0.7 mm
Overall Length8 mm
Shank Diameter4 mm
Socket Size3 mm (Hex Key)
Head Diameter7 mm
Head Height4 mm
StandardsDIN 912 / ISO 4762
Drive TypeInternal Hexagon
Tensile Strength700 MPa (A2-70) / 800 MPa (8.8)
Surface FinishPlain / Zinc Plated / Black Oxide
Thread Length5 mm
Torque Specification3.0-3.5 Nm (Stainless) / 4.2-4.8 Nm (Carbon)
question:Why can other suppliers find discontinued models you can't offer?
answer:Suppliers may have remaining stock from prior bulk purchases or source refurbished units.
question:What is the warranty coverage?
answer:Warranty covers defects in materials/workmanship for one year from delivery date.
question:How does warranty support work?
answer:Contact us with proof of purchase; we repair or replace defective items per terms.
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 can other suppliers find discontinued models you can't offer?
answer:Suppliers may have remaining stock from prior bulk purchases or source refurbished units.
question:What is the warranty coverage?
answer:Warranty covers defects in materials/workmanship for one year from delivery date.
question:How does warranty support work?
answer:Contact us with proof of purchase; we repair or replace defective items per terms.
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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