S-92200A580 1/4"-28 x 1/2" MS16996-21, NAS1351C4-8, NASM16996, FF-S-86 Mil. Spec. 18-8 Stainless Steel Socket Head Screws
Mil. Spec. 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 18-8 stainless steel construction and passivated finish, ideal for harsh industrial environments.
- Precise, reliable fastening through UNRF Class 3A fine threading, ensuring tight, secure connections in critical assemblies.
- High tensile strength of 80,000 psi provides superior load-bearing capacity and durability under stress.
- Standard hex socket drive allows for easy installation and removal with common tools, reducing assembly time.
- Full threading along the 1/2" length offers maximum grip and uniform clamping force across applications.
- Compliance with MS16996-21, NAS1351C4-8, and other standards guarantees consistent quality and interchangeability.
- RoHS 3 and REACH compliance ensures environmental safety and regulatory adherence for global supply chains.
Professional Applications & Engineering Value
This 18-8 stainless steel socket head cap screw is engineered to address common industrial challenges, such as vibration loosening and corrosion-induced failure. Its UNRF Class 3A fine thread design minimizes backlash and enhances sealing in precision equipment, while the passivated finish extends service life in moist or chemical-exposed settings. Ideal for aerospace, machinery, and automotive assemblies, it provides reliable performance where high tensile strength (80,000 psi) and strict dimensional accuracy are critical. The 3/16" hex drive facilitates efficient torque application, reducing installation errors and maintenance downtime in B2B applications.
Specification Summary & Compliance
This screw features a 1/4"-28 UNRF fine thread with Class 3A fit, ensuring tight tolerances and superior thread engagement. It is fully threaded and measures 1/2" in length, with specifications conforming to MS16996-21, NAS1351C4-8, NASM16996, and Fed. Spec. FF-S-86. The product is RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliant, meeting environmental and safety regulations for industrial use.
