S-90008A621 6-32 x 1/4" 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
- Superior corrosion resistance with silver-plated 18-8 stainless steel construction, ideal for harsh industrial environments
- Exceptional tensile strength rated at 70,000 psi for reliable performance under high-stress applications
- Precision Class 3A thread fit ensures secure fastening and vibration resistance in critical assemblies
- Hex socket drive design provides superior torque transmission and prevents stripping during installation
- Comprehensive regulatory compliance with RoHS 3 and REACH standards for global market acceptance
- Optimized for automated assembly with consistent UNC coarse threading and fully threaded shank design
- Enhanced durability with Rockwell B70 hardness for long service life in demanding applications
Professional Applications & Engineering Value
Engineered for precision industrial applications, these socket head cap screws combine the corrosion resistance of silver-plated 18-8 stainless steel with the mechanical reliability of 70,000 psi tensile strength. The UNC coarse threading with Class 3A fit ensures rapid installation and secure fastening in vibration-prone environments, while the hex socket drive prevents cam-out during high-torque applications. These fully threaded screws are particularly valuable in machinery assembly, electronic enclosures, and automotive components where consistent performance and regulatory compliance are critical. The silver plating enhances electrical conductivity while maintaining the screw's structural integrity in demanding operating conditions.
Specification Summary & Compliance
Manufactured to ASME B18.3 specifications with Class 3A thread fit precision and UNC 6-32 thread form. These inch-system fasteners feature coarse thread spacing and right-hand thread direction with complete compliance to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. The screws maintain dimensional accuracy per ASTM F837 standards with Rockwell B70 hardness and 70,000 psi tensile strength verification.
