S-91400A119 4-40 x 1" FF-S-92, QQ-P-35, MS51957-21 Stainless Steel Pan Head Phillips Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with passivated 18-8 stainless steel construction, ideal for harsh industrial environments
• High tensile strength of 80,000 psi ensures reliable performance under demanding mechanical loads
• Easy installation and removal with Phillips No. 1 drive and rounded pan head design
• Secure fastening in various materials thanks to coarse UNC threads and Class 2A thread fit
• Full threading along the 1" length provides maximum grip and uniform stress distribution
• Compliance with Fed. Spec. FF-S-92 and QQ-P-35 guarantees consistent quality and interchangeability
• Environmentally responsible manufacturing with RoHS 3 and REACH compliance

Professional Applications & Engineering Value

These 4-40 UNC rounded pan head Phillips screws deliver superior performance in industrial and engineering applications where corrosion resistance and mechanical strength are critical. The passivated 18-8 stainless steel material prevents rust and degradation, making them ideal for machinery, electronic enclosures, and outdoor equipment. The coarse thread design ensures quick assembly and reliable holding power in softer materials or where vibration resistance is needed. With a fully threaded 1" length and Class 2A thread fit, these screws provide consistent clamping force and are easy to source for maintenance and production lines, reducing downtime and ensuring compliance with stringent industry standards.

Specification Summary & Compliance

This screw features a 4-40 UNC coarse thread with Class 2A thread fit for standard tolerance and easy installation. It meets Fed. Spec. FF-S-92 and QQ-P-35, identified under MS51957-21, ensuring adherence to precise manufacturing and material specifications. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting safe and sustainable usage in global markets.