S-91900A615 5/16"-18 x 2" ASME B18.3 Tamper-Resistant Torx Stainless Steel Button Head Screws

Key Features & Benefits at a Glance

• Enhanced tamper resistance with T40 Torx drive for superior security in high-risk environments
• Exceptional corrosion resistance from 18-8 stainless steel construction and passivated finish
• Reliable high-strength performance with 70,000 psi tensile strength and Rockwell B70 hardness
• Precise thread engagement through Class 3A thread fit and UNC coarse threading for secure fastening
• Full-threaded design ensures maximum grip and load distribution across the entire 2" length
• Rounded button head profile provides a low-profile, aesthetically clean finish
• Regulatory compliance meets ASME B18.3, RoHS 3, and REACH for global industrial use

Professional Applications & Engineering Value

These 18-8 stainless steel tamper-resistant Torx screws address critical security and durability challenges in industrial settings. The passivated finish significantly enhances corrosion resistance, making them ideal for harsh environments like outdoor equipment, marine applications, and chemical processing facilities. The T40 tamper-resistant drive prevents unauthorized access in public infrastructure, transportation, and secure enclosures. With fully threaded UNC coarse threads and Class 3A fit, they deliver superior vibration resistance and clamping force in heavy machinery, assembly lines, and structural frameworks where reliability is non-negotiable.

Specification Summary & Compliance

This 5/16"-18 x 2" screw features UNC coarse threads with Class 3A precision fit for optimal thread engagement. Manufacturing adheres to ASME B18.3 specifications for dimensional accuracy and performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material restrictions are met for global industrial distribution.