S-95635A542 1/4"-20 x 1" ASME B18.3 Tamper-Resistant Hex-Drive Stainless Steel Button Head Screws
Tamper-Resistant Hex-Drive Stainless Steel Button Head Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Superior tamper resistance with specialized hex drive design to prevent unauthorized access in secure environments
- Excellent corrosion resistance through 18-8 stainless steel construction and passivated surface treatment
- High mechanical strength with 70,000 psi tensile strength and Rockwell B70 hardness for demanding applications
- Precise thread engagement with Class 3A thread fit ensuring reliable fastening performance
- Full threading capability providing maximum grip length and uniform load distribution
- Industry-standard compliance meeting ASME B18.3 specifications for dimensional accuracy
- Environmental responsibility with RoHS 3 and REACH compliance for sustainable manufacturing
Professional Applications & Engineering Value
These 1/4-20 UNC rounded head screws with tamper-resistant hex drive address critical security and durability challenges in industrial settings. The 18-8 stainless steel material combined with passivated finish provides exceptional resistance to corrosion and chemical exposure, making them ideal for harsh environments including outdoor equipment, marine applications, and chemical processing facilities. The coarse UNC threading ensures quick installation and reliable holding power in various materials, while the Class 3A thread fit guarantees precise engagement and vibration resistance. These security-focused fasteners are particularly valuable in public infrastructure, electrical enclosures, and machinery where unauthorized access prevention is paramount, delivering both engineering reliability and security assurance in demanding B2B applications.
Specification Summary & Compliance
Manufactured to exacting standards with Class 3A thread fit precision and UNC coarse threading (1/4"-20) specifications. These fully threaded fasteners comply with ASME B18.3 dimensional standards and feature a 5/32" tamper-resistant hex drive. The screws maintain full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring they meet the latest industry requirements for restricted substances and sustainable manufacturing practices.
