S-90008A261 2-56 x 1/2" 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
- Enhanced corrosion resistance with silver plating over 18-8 stainless steel, ideal for harsh environments and extended service life.
- Superior torque transmission and strip resistance thanks to the 5/64" hex drive and standard socket head profile.
- High tensile strength of 70,000 psi ensures reliable performance under significant load and stress.
- Precise Class 3A thread fit provides a secure, tight connection with minimal play in demanding assemblies.
- Excellent durability and wear resistance from a Rockwell B70 hardness rating.
- Broad compatibility with UNC coarse threads and right-hand direction for common industrial applications.
- Full threading along the 1/2" length offers maximum grip and adjustability in fastened joints.
Professional Applications & Engineering Value
This silver plated 18-8 stainless steel socket head cap screw is engineered to solve critical challenges in precision machinery, electronics, and aerospace assemblies. The combination of a UNC Class 3A thread and coarse thread spacing ensures rapid installation and vibration resistance, reducing maintenance downtime. The 5/64" hex drive allows for high torque application in confined spaces, preventing cam-out and ensuring a secure fit. The silver plating enhances conductivity and provides an additional barrier against galvanic corrosion, making these socket head cap screws ideal for applications requiring both electrical performance and environmental durability. Its fully threaded design guarantees consistent clamping force, essential for high-stress, high-reliability industrial fastening.
Specification Summary & Compliance
This screw adheres to ASME B18.3 and ASTM F837 specifications, ensuring dimensional accuracy and performance reliability. The UNC 2-56 thread maintains a Class 3A fit for precise engagement. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety for use in restricted substance-sensitive applications.
