S-95635A568 5/16"-18 x 1/2" 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 environments
- Superior 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 fit and UNC coarse threading for reliable fastening performance
- Streamlined installation featuring rounded button head profile that eliminates snagging hazards
- Regulatory compliance assurance meeting ASME B18.3 specifications and international environmental standards
- Optimal drive compatibility with standard 3/16" tamper-resistant hex tools for efficient assembly
Professional Applications & Engineering Value
Engineered for security-critical industrial applications, these 5/16"-18 UNC tamper-resistant hex screws provide reliable fastening solutions where unauthorized tampering poses operational risks. The combination of 18-8 stainless steel material and passivated finish delivers exceptional corrosion resistance in harsh environments, while the Class 3A thread fit ensures precise engagement and vibration resistance. The rounded button head design minimizes protrusion concerns in machinery, electronic enclosures, and public infrastructure. These security screws are particularly valuable in transportation, utility, and manufacturing settings where maintaining assembly integrity is paramount to operational safety and equipment longevity.
Specification Summary & Compliance
This fastener maintains precision Class 3A thread tolerances with UNC coarse threading (5/16"-18) and features a rounded button head profile with tamper-resistant hex drive. Manufacturing complies with ASME B18.3 specifications for dimensional accuracy and performance. The product is fully RoHS 3 (2015/863/EU) compliant and REACH (EC 1907/2006) compliant, meeting international environmental regulations for hazardous substances. Threading is fully threaded along the 1/2" length, providing maximum engagement strength in various material thicknesses.
