S-91772A514 4-40 x 7/32" ASME B18.6.3 Stainless Steel Pan Head Phillips Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with passivated 18-8 stainless steel construction for long-lasting performance in harsh environments
• Exceptional 70,000 psi tensile strength provides reliable holding power for demanding industrial applications
• Fully threaded design ensures maximum engagement and consistent clamping force across the entire fastener length
• Precise Class 2A thread fit guarantees smooth installation and secure fastening in standard UNC threaded holes
• Optimized Phillips No. 1 drive enables efficient installation with standard tools while minimizing cam-out risks
• Rounded pan head profile offers a low-profile finish that reduces snagging while providing good bearing surface
• Comprehensive compliance with ASME B18.6.3 standards ensures dimensional accuracy and interchangeability

Professional Applications & Engineering Value

These 4-40 UNC rounded pan head Phillips machine screws deliver exceptional value in precision assembly applications where corrosion resistance and mechanical strength are critical. The passivated 18-8 stainless steel construction provides superior protection against oxidation and chemical exposure, making these fasteners ideal for electronics enclosures, medical devices, marine equipment, and food processing machinery. The coarse UNC thread design ensures rapid installation and reliable performance in materials where fine threads might strip or fail. With their fully threaded configuration and Class 2A thread fit, these screws maintain consistent clamping force throughout their engagement length, preventing loosening under vibration while accommodating minor misalignments in assembly. The combination of 70,000 psi tensile strength and corrosion-resistant properties makes these fasteners a cost-effective solution for applications requiring durability without frequent maintenance.

Specification Summary & Compliance

This 4-40 UNC machine screw features precise Class 2A thread fit tolerances and complies with ASME B18.6.3 dimensional standards for guaranteed interchangeability. The fastener meets RoHS 3 (2015/863/EU) compliance for restricted hazardous substances and REACH (EC 1907/2006) regulations for chemical safety. Manufactured from 18-8 stainless steel with passivation treatment, the screw maintains dimensional stability across its 7/32" length with consistent coarse thread spacing and right-hand thread direction for standardized installation procedures.