S-90517A415 10-32 x 1 1/2" ASME B18.3 Tamper-Resistant Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Enhanced tamper resistance with specialized hex drive design to prevent unauthorized access in security-critical applications
• Superior corrosion resistance through 18-8 stainless steel construction and passivated surface treatment for extended service life
• Exceptional mechanical strength with 70,000 psi tensile strength and Rockwell B55 hardness for demanding industrial environments
• Precision thread engagement with Class 3A fit and UNF fine threading ensuring reliable, vibration-resistant connections
• Optimized flush mounting featuring standard 82° countersink angle for seamless integration in precision assemblies
• Regulatory compliance assurance meeting ASME B18.3 specifications while adhering to RoHS 3 and REACH environmental standards
• Versatile partial threading providing controlled clamping force distribution across the 1-1/2" length

Professional Applications & Engineering Value

This 10-32 UNF flat head screw delivers critical engineering advantages in security-sensitive and corrosive environments. The tamper-resistant hex drive (5/32" size) prevents unauthorized disassembly in public infrastructure, electrical enclosures, and machinery access panels. Manufactured from 18-8 stainless steel with passivated finish, it resists chemical degradation in marine, chemical processing, and outdoor applications. The Class 3A thread fit and UNF fine threading maintain connection integrity under vibration, while the 82° countersink enables flush mounting in precision equipment. These features combine to solve common industrial challenges of security compromise, environmental degradation, and mechanical failure in critical fastening applications.

Specification Summary & Compliance

This fastener maintains Class 3A thread fit tolerance with UNF (Unified National Fine) thread form per ASME standards. Manufacturing complies with ASME B18.3 specifications for dimensional accuracy and mechanical properties. The product is fully RoHS 3 (2015/863/EU) compliant and REACH (EC 1907/2006) compliant regarding hazardous substance restrictions. Critical dimensions include 10-32 thread size, 1-1/2" length with 7/8" minimum thread engagement, and 0.411" head diameter with standard flat head profile.