S-92200A108 4-40 x 3/8" MS16995-10, NAS1352C04-6, NASM16995, FF-S-86 Mil. Spec. 18-8 Stainless Steel Socket Head Screws

Key Features & Benefits at a Glance

• Corrosion-resistant performance with 18-8 stainless steel construction and passivated finish for extended service life in harsh environments
• Precise Class 3A thread fit ensures reliable engagement and vibration resistance in critical assemblies
• High tensile strength of 80,000 psi provides exceptional load-bearing capacity for demanding applications
• Standard hex socket drive allows for secure tool engagement and consistent torque application
• Full threading design offers maximum grip length and flexibility in various material thicknesses
• Comprehensive standards compliance including MS16995-10 and NAS1352C04-6 for aerospace and defense applications
• Environmental regulation compliance with RoHS 3 and REACH for global market acceptance

Professional Applications & Engineering Value

Engineered for precision assemblies requiring reliable fastening solutions, this 4-40 thread socket head cap screw addresses common industrial challenges through its 18-8 stainless steel composition and passivated surface treatment. The combination resists chemical attack and galvanic corrosion in marine, chemical processing, and outdoor applications. The Class 3A UNRC coarse thread configuration prevents cross-threading during installation while maintaining secure connections in vibration-prone environments. With its 3/32" hex drive and standard socket head profile, this fastener enables precise torque control in confined spaces typical of machinery, electronic enclosures, and aerospace components. The fully threaded 3/8" length provides consistent clamping force across varying material thicknesses, eliminating the need for multiple screw types in inventory.

Specification Summary & Compliance

This socket head cap screw maintains precision Class 3A thread tolerances with UNRC coarse thread spacing (4-40 thread size) and right-hand thread direction. Manufacturing complies with MS16995-10, NAS1352C04-6, NASM16995, and Fed. Spec. FF-S-86 specifications. The fastener is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring suitability for international markets and regulated industries.