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Home Product M3×8 Cylindrical Head Hex Socket Screws | DIN 912 Allen Bolts for Machinery, Automotive
Cylindrical head hexagon socket screws M3*8

M3×8 Cylindrical Head Hex Socket Screws | DIN 912 Allen Bolts for Machinery, Automotive

M3x8 hex socket screws
hex socket cap screw M3x8
metric hex socket screws M3x8
Cylindrical head hexagon socket screws M3*8
Cylindrical head M3x8 hex socket screws compliant with DIN 912/ISO 4762 standards. High-strength steel or stainless steel construction with zinc-plated finish. Ideal for machinery, electronics, and equipment assembly. Includes hex socket cap screw M3x8 and metric hex socket screws M3x8 variants.
Categories:Fasteners & Fixings
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Product Description

The M3x8 hex socket screws, also known as hex socket cap screw M3x8 or metric hex socket screws M3x8, are precision-engineered fasteners designed for secure assembly in tight spaces. These ISO 4762-compliant screws feature a cylindrical head with an internal hex drive (1.5mm key size) and a full M3x8mm thread length. Made from grade 12.9 alloy steel with optional zinc plating or black oxide coating, they offer tensile strength up to 1,200 MPa and operate reliably in temperatures from -50°C to +120°C. Widely used in machinery manufacturing, automotive components, and electronics enclosures, their key advantages include space-saving design, high torque transmission capability, and corrosion resistance. Potential limitations include restricted accessibility in deep recesses and the requirement for specialized hex keys. The compact M3 diameter and 8mm shaft length make them ideal for medium-duty applications where low-profile fastening is critical.
Parameter Specification
Thread Size M3x8 hex socket screws
Head Style Cylindrical hex socket cap screw M3x8
Standard ISO 4762 / DIN 912
Material Carbon steel / Stainless steel A2
Tensile Strength 4.8/8.8 (Carbon steel), 70 MPa (A2)
Hex Key Size 2.5 mm
Thread Pitch 0.5 mm (metric hex socket screws M3x8)
Surface Treatment Black oxide / Zinc plated
Drive Type Internal hexagon socket
Head Diameter 5.50 mm
Head Height 3.00 mm
Torque Resistance 3.2 N·m (8.8 grade)
Application Machinery assembly, electronics, metric fastening systems
question:How to handle after-sales if a refurbished product is found faulty during use?
answer:We offer a warranty for refurbished items. Contact support for replacement or refund based on assessment.
question:Why is shipping costly? Are there cheaper delivery options?
answer:We provide multiple carriers. Discuss budget needs with our team for discounted bulk rates or economy options.
question:Can shipments be declared with lower value for customs?
answer:Declarations must comply with regulations. Contact us for guidance to avoid penalties while optimizing costs.
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:How to handle after-sales if a refurbished product is found faulty during use?
answer:We offer a warranty for refurbished items. Contact support for replacement or refund based on assessment.
question:Why is shipping costly? Are there cheaper delivery options?
answer:We provide multiple carriers. Discuss budget needs with our team for discounted bulk rates or economy options.
question:Can shipments be declared with lower value for customs?
answer:Declarations must comply with regulations. Contact us for guidance to avoid penalties while optimizing costs.
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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