S-91900A865 M8 x 12 mm ASTM F879M, ISO 7380 Tamper-Resistant Torx Stainless Steel Button Head Screws

Key Features & Benefits at a Glance

• Enhanced security with tamper-resistant Torx T40 drive that prevents unauthorized removal in public or high-risk environments
• Superior corrosion resistance through 18-8 stainless steel construction and passivated surface treatment for extended service life in harsh conditions
• Reliable mechanical performance with 80,000 psi tensile strength and Rockwell B96 hardness to withstand high-stress applications
• Precise thread engagement with Class 6g metric threading ensuring consistent fastening and vibration resistance
• Streamlined installation featuring fully threaded design and rounded button head profile for flush mounting and reduced snagging
• Broad compatibility with standard M8 x 1.25mm coarse thread specifications for interchangeability across metric systems
• Regulatory compliance meeting international standards including ASTM F879M and ISO 7380 for quality assurance

Professional Applications & Engineering Value

These M8 metric screws with tamper-resistant Torx drive provide critical security solutions for industrial equipment, public infrastructure, and electronic enclosures where unauthorized access poses significant risks. The combination of 18-8 stainless steel material and passivated finish delivers exceptional resistance to corrosion, moisture, and chemical exposure, addressing common failure points in manufacturing and outdoor applications. The fully threaded design with Class 6g thread fit ensures maximum thread engagement and clamping force distribution, while the rounded button head profile eliminates protrusion concerns in compact assemblies. Engineered to maintain integrity under vibration and thermal cycling, these security fasteners offer reliable performance in automotive, telecommunications, and machinery applications where both protection and durability are paramount.

Specification Summary & Compliance

This metric fastener features precise M8 x 1.25mm coarse threading with Class 6g tolerance according to ISO metric standards. Manufacturing specifications conform to ASTM F879M and ISO 7380 standards for dimensional accuracy and mechanical properties. The product demonstrates full compliance with RoHS 3 (2015/863/EU) restrictions on hazardous substances and REACH (EC 1907/2006) regulations for chemical safety, ensuring environmental responsibility and regulatory acceptance in global markets.