S-91900A831 10-32 x 3/4" ASME B18.3 Tamper-Resistant Torx Stainless Steel Button Head Screws

Key Features & Benefits at a Glance

• Enhanced tamper resistance with specialized Torx T25 drive prevents unauthorized access in security-sensitive installations
• Superior corrosion protection through passivated 18-8 stainless steel construction ensures long-term reliability in harsh environments
• Precision Class 3A thread fit delivers exceptional engagement and vibration resistance in critical assemblies
• High-strength performance with 70,000 psi tensile strength and Rockwell B70 hardness withstands demanding mechanical stresses
• Optimized rounded button head profile provides smooth surface finish while maintaining secure fastening capability
• Full threading along 3/4" length ensures maximum grip and load distribution across connected components
• Regulatory compliance assurance meets ASME B18.3 specifications and environmental standards (RoHS 3/REACH)

Professional Applications & Engineering Value

These 10-32 UNF Class 3A rounded head screws with tamper-resistant Torx T25 drive address critical security and reliability challenges in industrial applications. The 18-8 stainless steel construction combined with passivated finish creates a robust barrier against corrosion, making them ideal for outdoor equipment, electronic enclosures, and medical devices where environmental exposure is a concern. The fine thread spacing and Class 3A precision ensure secure fastening in vibration-prone assemblies, while the fully threaded design maximizes contact surface for superior load distribution. These security screws provide engineered solutions for access control systems, public infrastructure, and high-value assets requiring tamper-resistant protection without compromising mechanical performance.

Specification Summary & Compliance

Manufactured to exacting ASME B18.3 standards with Class 3A thread fit for precision UNF threading. The 10-32 thread size features fine thread spacing with right-hand direction and 0.19" thread diameter. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. Mechanical properties include 70,000 psi tensile strength and Rockwell B70 hardness for consistent performance in industrial fastening applications.