S-98164A106 6-32 x 1/4" ASME B18.3, ASTM F879 Stainless Steel Button Head Hex-Drive Screws
Stainless Steel Button Head Hex-Drive 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
- Exceptional corrosion resistance from 316 stainless steel and passivated finish, ideal for harsh environments
- Superior thread engagement and reliability with Class 3A precision fit and UNC coarse spacing
- High mechanical strength with 70,000 psi tensile strength and Rockwell B55 hardness for demanding loads
- Secure, non-slip installation using the 5/64" hex drive and rounded button head design
- Full thread coverage ensures maximum grip and uniform stress distribution along the entire 1/4" length
- Compliance with major industry standards including ASME B18.3, RoHS 3, and REACH for guaranteed quality and safety
- Right-hand threading provides standard, intuitive installation for efficient assembly
Professional Applications & Engineering Value
Engineered for demanding industrial applications, these 316 stainless steel rounded head screws address critical challenges in corrosive or high-stress environments. The combination of UNC coarse thread spacing and Class 3A thread fit ensures rapid assembly with minimal cross-threading risk, while the passivated finish significantly enhances corrosion resistance against chemicals, moisture, and salt spray. The fully threaded design and 70,000 psi tensile strength provide reliable, vibration-resistant fastening in machinery, marine equipment, and chemical processing systems where fastener failure is not an option. The hex drive and rounded button head offer a clean, low-profile installation that withstands heavy-duty use without compromising performance.
Specification Summary & Compliance
This screw features a 6-32 UNC thread with Class 3A precision fit and coarse spacing, ensuring tight tolerances and reliable performance. Manufacturing and quality adhere to ASME B18.3 specifications where applicable under ASTM F879. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free from hazardous substances and safe for industrial use across regulated markets.
