S-91870A742 10-32 x 1" ASME B18.3 Tamper-Resistant Torx Plus Stainless Steel Flat Head Screws

Key Features & Benefits at a Glance

• Enhanced Security: Tamper-Resistant Torx Plus drive (IPR25) deters unauthorized removal, protecting critical assemblies.
• Superior Corrosion Resistance: Made from 18-8 Stainless Steel with a passivated finish for long-lasting performance in harsh environments.
• High Mechanical Strength: Withstands demanding applications thanks to 70,000 psi tensile strength and Rockwell B70 hardness.
• Precise & Reliable Fastening: Class 3A thread fit ensures tight, secure connections with minimal risk of stripping or loosening.
• Optimal Flush Mounting: Flat head with an 82° countersink angle allows for a smooth, unobtrusive surface finish.
• Full Thread Engagement: Fully threaded 1" length provides maximum grip and holding power across the entire fastener.
• Broad Industry Compliance: Meets ASME B18.3 specifications and is RoHS 3 & REACH compliant for safe, regulated use.

Professional Applications & Engineering Value

This high-security 10-32 UNF flat head screw is engineered for applications where tampering and environmental factors are major concerns. The Tamper-Resistant Torx Plus drive provides a significant deterrent in public fixtures, electronic enclosures, and machinery access panels, preventing disassembly without specialized tools. Constructed from 18-8 Stainless Steel and finished with a passivation layer, it offers excellent resistance to oxidation and corrosion, making it ideal for outdoor, marine, or chemical-exposed settings. The combination of a fine thread (UNF) and a Class 3A fit delivers superior vibration resistance and clamping force in precision assemblies, from aerospace components to high-value industrial equipment. Its robust 70,000 psi tensile strength ensures structural integrity under stress, solving the dual challenges of security and durability.

Specification Summary & Compliance

This screw features a 10-32 UNF thread with a Class 3A fit for high precision. It is manufactured in accordance with the ASME B18.3 standard, ensuring dimensional accuracy and interchangeability. The product is confirmed to be compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, affirming it is free of hazardous substances and safe for use in regulated markets.