ISO 4762 Socket Head Cap Screw

ISO 4762 / DIN 912 socket head cap screws are hex-socket driven machine screws for applications requiring high clamping force in confined space. sinofastener supplies socket head cap screws in carbon steel property class 12.9 and stainless A4-80 (316), thread range M5–M24, in plain, zinc plated or black oxide finish, with material certificates on request.

What Is an ISO 4762 Socket Head Cap Screw?

Asocket head cap screwperISO 4762(formerlyDIN 912) has a cylindrical head with an internal hexagon socket drive. The socket drive and reduced head envelope allow installation in confined spaces and enable high tightening torque without external wrench access. It is a widely used standard machine screw for equipment, valves, flanges and structural clamping in marine installations.

Marine Applications

Note: Application list based on typical industry practice for socket head cap screws; final service per project.

Specifications & Materials

Standards Reference

• ISO 4762 — Hexagon socket head cap screws
• DIN 912 — Former designation, equivalent to ISO 4762
• ISO 898-1 — Mechanical properties of carbon steel fasteners
• ISO 3506-1 — Mechanical properties of corrosion-resistant stainless steel fasteners
• EN 10204 — Metallic products, types of inspection documents

FAQ

Q1: Are ISO 4762 and DIN 912 the same?
Yes, DIN 912 has been superseded by ISO 4762 with equivalent dimensions; the ISO designation is the current standard.

Q2: What materials are available?
Carbon steel property class 12.9 and stainless steel A4-80 (316) per ISO 3506-1, with finish options per project.

Q3: Why use a socket head cap screw?
The internal hex socket allows higher tightening torque and installation in confined spaces compared to external hex heads.

Q4: Can you provide material certificates?
Yes. EN 10204 3.1 as standard for qualified items; 3.2 subject to PO and class requirement.