S-91870A833 10-32 x 1" ASME B18.3 Tamper-Resistant Torx Stainless Steel Flat Head Screws

Key Features & Benefits at a Glance

• Enhanced tamper-resistance with specialized Torx T25 drive for superior security in public or high-risk environments
• Exceptional corrosion resistance from 18-8 stainless steel construction and passivated finish for long-term reliability in harsh conditions
• Precise thread engagement with Class 3A UNF fine threading ensuring vibration resistance and secure fastening
• High strength performance with 70,000 psi tensile strength and Rockwell B70 hardness for demanding industrial applications
• Flush mounting capability with standard 82° flat head profile for smooth surface finishes and aerodynamic profiles
• Full regulatory compliance meeting ASME B18.3 standards, RoHS 3, and REACH for global market acceptance
• Complete thread coverage with fully threaded design providing maximum grip along the entire 1" length

Professional Applications & Engineering Value

These 10-32 UNF flat head screws deliver critical engineering solutions where security and corrosion resistance are paramount. The tamper-resistant Torx T25 drive prevents unauthorized access in public infrastructure, electronic enclosures, and transportation equipment, while the 18-8 stainless steel material with passivated finish ensures long-term performance in marine, chemical, and outdoor environments. The Class 3A thread fit provides superior vibration resistance in machinery and precision equipment, and the fine UNF threading offers enhanced load distribution compared to coarse threads. The flat head design with standard 82° countersink allows for seamless integration in applications requiring flush surfaces, from aerospace components to architectural metalwork.

Specification Summary & Compliance

These security screws feature precision 10-32 UNF fine threading with Class 3A fit for exacting tolerance requirements. Manufacturing complies with ASME B18.3 specifications for dimensional accuracy and performance standards. Regulatory compliance includes RoHS 3 (2015/863/EU) for hazardous substance restrictions and REACH (EC 1907/2006) for chemical safety. The combination of right-hand threading, fully threaded design, and standardized flat head profile ensures consistent performance across industrial applications.