S-91900A197 8-32 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 drive requiring matching T15 tools, preventing unauthorized access in secure installations
• Superior corrosion protection through 18-8 stainless steel construction and passivated surface treatment for extended service life in harsh environments
• Exceptional mechanical strength delivering 70,000 psi tensile strength and Rockwell B70 hardness for heavy-duty fastening applications
• Precision thread engagement with Class 3A UNC coarse threads ensuring reliable, vibration-resistant connections in industrial equipment
• Optimized head design featuring rounded button profile for reduced snagging and improved aesthetic integration
• Full threading capability providing maximum grip length and uniform stress distribution across the entire fastener
• Regulatory compliance assurance meeting ASME B18.3 specifications while adhering to RoHS 3 and REACH environmental standards

Professional Applications & Engineering Value

These tamper-resistant Torx screws address critical security and durability challenges in industrial settings where unauthorized tampering or environmental factors compromise fastener integrity. The 18-8 stainless steel composition combined with passivated finish creates a robust barrier against corrosion, making them ideal for outdoor equipment, marine applications, and chemical processing facilities. The UNC coarse thread design with Class 3A fit ensures rapid installation and superior vibration resistance in assembly lines, while the specialized T15 drive system provides the necessary security for public infrastructure, electrical enclosures, and machinery requiring controlled access. The fully threaded configuration maximizes clamping force distribution, preventing loosening under dynamic loads in automotive, aerospace, and heavy machinery applications.

Specification Summary & Compliance

Manufactured to precise dimensional standards with Class 3A thread fit and UNC coarse thread specifications (8-32 thread size, 3/4" length). These rounded head screws comply with ASME B18.3 mechanical and dimensional requirements while meeting environmental regulations including RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance standards. The fasteners maintain consistent 0.164" thread diameter and standard rounded head profile throughout production, ensuring interchangeability and reliable performance in qualified applications.