S-92200A110 4-40 x 1/2" MS16995-11, NAS1352C04-8, 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 construction and passivated finish, ideal for harsh environments
• High tensile strength of 80,000 psi ensures reliable performance in demanding mechanical assemblies
• Precision Class 3A thread fit provides superior engagement and vibration resistance in critical applications
• Hex socket drive design allows for high torque application and secure installation in confined spaces
• Full threading along the 1/2" length offers maximum grip and adjustability across the entire fastener
• Compliance with multiple aerospace and federal specifications (MS16995-11, NAS1352C04-8, NASM16995, FF-S-86) guarantees quality and interoperability
• RoHS 3 and REACH environmental compliance ensures safe use in regulated industries and global markets

Professional Applications & Engineering Value

This 4-40 thread socket head cap screw is engineered to address critical challenges in precision assemblies where space constraints and corrosion resistance are paramount. The 18-8 stainless steel material combined with a passivated finish significantly enhances durability against oxidation and chemical exposure, making it suitable for aerospace, medical device, and marine applications. Its hex drive style and standard socket head profile facilitate secure tightening in hard-to-reach areas, while the coarse UNRC thread and Class 3A fit ensure rapid installation and reliable clamping force. The fully threaded design and 80,000 psi tensile strength provide consistent performance in high-stress environments, reducing the risk of fastener failure and maintenance downtime.

Specification Summary & Compliance

This socket head cap screw features a 4-40 thread size with Class 3A thread fit and coarse thread spacing, ensuring precise dimensional accuracy per UNRC standards. It is manufactured in compliance with MS16995-11, NAS1352C04-8, NASM16995, and FF-S-86 specifications, confirming adherence to rigorous aerospace and federal requirements. The product is also verified as RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting current environmental and safety regulations for hazardous substance restrictions.