S-90008A221 2-56 x 1/8" ASME B18.3, ASTM F837 18-8 Stainless Steel Socket Head Screws
18-8 Stainless Steel Socket Head Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Exceptional corrosion resistance with silver-plated 18-8 stainless steel construction, ideal for harsh environments and long-term reliability.
- High tensile strength of 70,000 psi ensures secure fastening under heavy loads, reducing the risk of mechanical failure.
- Precise Class 3A thread fit provides superior engagement and vibration resistance in critical assemblies.
- Hex socket drive (5/64") allows for high-torque installation with standard tools, minimizing stripping and improving efficiency.
- Compliance with ASME B18.3, RoHS 3, and REACH guarantees adherence to industry standards and environmental safety regulations.
- Rockwell B70 hardness offers excellent durability and wear resistance for repeated use in demanding applications.
- Coarse UNC threads enable quick assembly and disassembly, saving time in maintenance and production cycles.
Professional Applications & Engineering Value
This 2-56 UNC thread socket head cap screw is engineered to address common industrial challenges, such as corrosion and mechanical stress in precision equipment. Made from silver-plated 18-8 stainless steel, it combines anti-corrosive properties with the strength needed for high-vibration environments like aerospace, electronics, and machinery assembly. The Class 3A thread fit and hex drive design ensure tight, reliable connections that resist loosening, reducing downtime and maintenance costs. Ideal for applications requiring coarse thread fasteners with strict compliance to ASME B18.3 standards, it delivers consistent performance in tight spaces and demanding conditions, enhancing overall system integrity.
Specification Summary & Compliance
This screw features precise dimensions, including a 1/8" length, 2-56 UNC coarse thread with Class 3A fit for accurate engagement, and a standard socket head profile. It meets ASME B18.3 specifications, ensuring manufacturing consistency, and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) for environmental safety, with no hazardous substances as per the latest standards.
