S-95635A571 5/16"-18 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
- Enhanced tamper resistance with specialized hex drive design to prevent unauthorized access in secure installations
- Superior corrosion resistance through 18-8 stainless steel construction and passivated surface treatment
- High-load bearing capability with 70,000 psi tensile strength for demanding industrial applications
- Precision thread engagement with Class 3A fit ensuring reliable fastening in coarse UNC threading
- Optimized head profile featuring rounded button design for reduced snagging and clean aesthetic finish
- Full-threaded construction providing maximum grip length and uniform stress distribution
- Regulatory compliance meeting ASME B18.3 standards and environmental regulations for global deployment
Professional Applications & Engineering Value
These 5/16"-18 UNC rounded head screws deliver critical security and durability advantages for industrial applications where tampering prevention and environmental resistance are paramount. The 18-8 stainless steel composition combined with passivated finish creates a robust barrier against corrosion in demanding environments including outdoor installations, manufacturing equipment, and public infrastructure. The tamper-resistant hex drive system provides an essential security layer for access panels, electrical enclosures, and public fixtures while maintaining the installation efficiency of standard hex drives. With Class 3A thread fit and coarse UNC threading, these fasteners ensure rapid installation and reliable performance in vibration-prone applications, reducing maintenance frequency and total cost of ownership.
Specification Summary & Compliance
Manufactured to precise dimensional standards with Class 3A thread fit tolerance and UNC coarse threading (5/16"-18). Complies with ASME B18.3 mechanical specifications, RoHS 3 (2015/863/EU) for hazardous substance restriction, and REACH (EC 1907/2006) regulations for chemical safety. Features include 1" length, fully threaded design, 0.547" head diameter, and 3/16" tamper-resistant hex drive size.
