S-90484A182 6-32 x 1/4" ASME B18.3, ASTM F835 Tamper-Resistant Hex-Drive Steel Button Head Screws
Tamper-Resistant Hex-Drive 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 prevents unauthorized access in sensitive applications
- Superior corrosion protection through black-oxide coating on alloy steel extends service life in demanding environments
- Exceptional mechanical strength with 130,000 psi tensile strength and Rockwell C39 hardness withstands high-stress applications
- Precise thread engagement with Class 3A fit and UNC coarse threading ensures reliable fastening in industrial assemblies
- Optimized head design featuring rounded button profile provides smooth surface finish while maintaining driving security
- Full regulatory compliance meets ASME B18.3 specifications and environmental standards for global industrial use
- Complete threading coverage across the 1/4" length delivers consistent clamping force throughout the engagement
Professional Applications & Engineering Value
Engineered for industrial security applications, these 6-32 UNC thread screws address critical concerns in access control systems, machinery guarding, and public infrastructure. The black-oxide alloy steel construction provides essential corrosion resistance while maintaining the high tensile strength required for vibration-prone environments. The tamper-resistant hex drive design specifically counters unauthorized disassembly attempts, making these rounded head screws ideal for permanent installations where security and reliability are paramount. The coarse thread spacing ensures quick installation and superior holding power in various materials, from metal enclosures to industrial equipment assemblies.
Specification Summary & Compliance
Manufactured to precision Class 3A thread fit with UNC coarse thread form, these screws maintain exacting dimensional standards per ASME B18.3 specifications. The 1/4" length with full threading provides consistent engagement depth, while the 0.138" thread diameter ensures proper clearance in standard applications. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations confirms environmental responsibility, meeting the latest international standards for industrial components.
