Short Description:

GB/T 70.1-2008 Socket Head Cap Screws

In industrial applications where compact head profile, high clamping force, and limited side clearance are critical, GB/T 70.1-2008 socket head cap screws (Allen bolts) have become the preferred choice. Handan Haosheng Fastener Co., Ltd., a leading manufacturer based in Handan, China, specializes in producing high-quality GB/T 70.1-2008 socket head cap screws, offering a cylindrical head and internal hex drive for precise, high-strength fastening in machinery, molds and automation equipment.

At Handan Haosheng Fastener Co., Ltd., our socket head cap screws are engineered to match each assembly with the right size, property class and surface finish from carbon, alloy or stainless steel, with legacy GB 70-76 replacements quoted and dimensionally checked separately.

Why Choose Haosheng GB/T 70.1-2008 Socket Head Cap Screws?

Our socket head cap screws deliver several key advantages:

• ✔ Size range M1.6-M64 – coarse metric threads at product grade A, with custom lengths supplied per drawing or order specification.
• ✔ Property classes 8.8-12.9 – carbon and alloy steel in 8.8, 10.9 and 12.9, each marked and verified to its ordered class.
• ✔ Three material families – carbon steel, alloy steel and 304/316 stainless, so corrosion resistance maps to the service environment.
• ✔ Four surface finishes – black oxide, zinc, yellow zinc and zinc-nickel, with stainless parts kept in natural finish.

Haosheng’s Socket Head Cap Screw Solutions

At Handan Haosheng Fastener Co., Ltd., we offer:

• Customizable specifications for thread, length, material, property class and finish, confirmed from technical drawings or physical samples.
• Current and legacy supply – GB/T 70.1-2008 (modified adoption of ISO 4762:2004) plus legacy GB 70-76 stock quoted and checked separately.
• Strict quality control ensuring adherence to ISO 9001, ISO 14001, and ISO 45001, with carbon/alloy steel to GB/T 3098.1 and stainless to GB/T 3098.6.

Our GB/T 70.1-2008 socket head cap screws are widely used in:

• Machinery, molds and automation equipment needing high clamping force in tight cavities.
• Pumps, valves and instrumentation where a recessed, flush cylindrical head avoids collision.
• Structural steel assemblies and machine frames built with marked high-strength bolts.
• OEM supply to international fastener distributors and equipment builders.

Why Partner with Haosheng?

• ✅ 33 years of fastener manufacturing as a source factory in Yongnian, Handan.
• ✅ Full-category, full-material coverage across standards with one-stop supply.
• ✅ ISO 9001, 14001, and 45001 certified quality, environmental, and safety management.
• ✅ OEM/ODM and bulk supply with competitive pricing and stable lead times.

For industries demanding reliable, high-strength fastening in confined spaces, Handan Haosheng’s GB/T 70.1-2008 socket head cap screws deliver unmatched reliability.
Contact us today to discuss your requirements!