S-91870A245 10-24 x 3/4" ASME B18.3 Tamper-Resistant Torx Stainless Steel Flat Head Screws

Key Features & Benefits at a Glance

• Enhanced tamper resistance with T25 Torx drive prevents unauthorized removal in high-security applications
• Superior corrosion protection through passivated 18-8 stainless steel construction ensures long-term reliability in harsh environments
• Precise Class 3A thread fit delivers consistent engagement and reduced risk of cross-threading during installation
• High tensile strength of 70,000 psi provides reliable fastening performance under significant mechanical stress
• Full threading along the 3/4" length offers maximum grip and holding power across the entire fastener
• Standard 82° countersink angle ensures flush mounting and clean aesthetic finish in precision applications
• Rockwell B70 hardness rating maintains structural integrity and resistance to deformation during repeated use

Professional Applications & Engineering Value

These 10-24 UNC flat head screws with tamper-resistant T25 Torx drive address critical security and durability challenges in industrial settings. The combination of 18-8 stainless steel material and passivated finish provides exceptional resistance to corrosion, making them ideal for outdoor equipment, marine applications, and chemical processing facilities where environmental exposure is a concern. The Class 3A thread fit ensures precise mating with corresponding nuts and threaded holes, reducing installation time and preventing assembly errors. Particularly valuable in public infrastructure, telecommunications, and transportation equipment, these security fasteners prevent vandalism and unauthorized access while maintaining the structural integrity required for demanding mechanical applications. The flat head design with standard profile allows for seamless integration into surfaces where protrusion must be avoided.

Specification Summary & Compliance

Manufactured to ASME B18.3 specifications with Class 3A thread fit for superior dimensional accuracy. Features UNC coarse threading with 10-24 thread size and right-hand direction. 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.