S-91900A919 12-24 x 3/4" ASME B18.3 Tamper-Resistant Torx Stainless Steel Button Head Screws

Key Features & Benefits at a Glance

• Enhanced tamper resistance with Torx T25 drive for secure installations in high-security environments
• Superior corrosion resistance from 18-8 Stainless Steel construction and passivated finish, ideal for harsh industrial conditions
• Exceptional mechanical strength with 70,000 psi tensile strength and Rockwell B70 hardness for reliable load-bearing performance
• Precise thread engagement through Class 3A thread fit and UNC coarse spacing, ensuring vibration resistance and easy assembly
• Full-threaded design for maximum grip length and uniform stress distribution across applications
• Rounded button head profile providing a low-profile, snag-free finish while maintaining aesthetic appeal
• Regulatory compliance with ASME B18.3, RoHS 3, and REACH, guaranteeing safety and environmental standards

Professional Applications & Engineering Value

This 12-24 UNC 3/4" rounded head screw addresses critical needs in industrial settings where security, durability, and precision are paramount. The 18-8 Stainless Steel material, combined with a passivated finish, offers excellent resistance to oxidation and chemical exposure, making it suitable for outdoor equipment, marine hardware, and food processing machinery. The tamper-resistant Torx T25 drive prevents unauthorized access in public infrastructure, electrical enclosures, and transportation systems. With a Class 3A thread fit and coarse threading, it ensures quick installation and high vibration resistance, reducing maintenance costs and downtime. Fully threaded for consistent clamping force, this fastener is engineered to meet rigorous ASME B18.3 specifications, providing long-term reliability in demanding B2B applications.

Specification Summary & Compliance

This product adheres to Class 3A thread fit tolerances per UNC standards, with a thread size of 12-24 and coarse spacing. Manufacturing follows ASME B18.3 specifications, ensuring dimensional accuracy and performance. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming the absence of hazardous substances. The screw features a right-hand thread direction, fully threaded design, and meets all stated mechanical properties including 70,000 psi tensile strength and Rockwell B70 hardness.