S-92200A548 1/4"-20 x 1 3/4" MS16995-55, NAS1352C4-28, NASM16995, FF-S-86 Mil. Spec. 18-8 Stainless Steel Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 18-8 stainless steel and passivated finish, ideal for harsh environments and extended service life.
• High-reliability fastening backed by an 80,000 PSI tensile strength, ensuring joint integrity under significant loads.
• Precise, secure installation using a 3/16" hex drive and standard socket head, minimizing cam-out and providing a clean, flush finish.
• Optimized thread engagement with Class 3A fit and 1/4"-20 UNRC coarse threads, enabling quick assembly and vibration resistance.
• Versatile partial threading (1 1/4" min thread length on a 1 3/4" screw) for applications requiring both clamping and unthreaded shank benefits.
• Broad industry acceptance, conforming to MS16995, NAS1352C, NASM16995, and FF-S-86 specifications for assured quality and interchangeability.
• Environmentally compliant manufacturing, meeting RoHS 3 and REACH regulations for safe use in regulated markets.

Professional Applications & Engineering Value

This socket head cap screw is engineered to address critical challenges in industrial fastening, where corrosion resistance, high strength, and precise fit are paramount. The 18-8 stainless steel material, enhanced by a passivated finish, provides superior protection against oxidation and chemical exposure, making it ideal for machinery, marine equipment, and food processing applications. The 1/4"-20 coarse thread (UNRC) with a Class 3A thread fit ensures rapid installation and reliable performance in high-vibration environments, reducing maintenance needs. Its 3/16" hex drive and standard socket head design allow for high torque application without stripping, facilitating efficient assembly in confined spaces. By meeting stringent standards like MS16995 and NAS1352C, this fastener delivers consistent quality and reliability for OEMs and MRO operations requiring durable, specification-compliant components.

Specification Summary & Compliance

This socket head cap screw features a 1/4"-20 UNRC coarse thread with a Class 3A thread fit for high precision and minimal play. The screw is partially threaded with a minimum thread length of 1 1/4" on an overall length of 1 3/4". It is manufactured in accordance with MS16995, NAS1352C, NASM16995, and Fed. Spec. FF-S-86. The product is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, ensuring adherence to environmental and safety regulations.