S-92949A834 1/4"-20 x 9/16" ASME B18.3, ASTM F879 Stainless Steel Button Head Hex-Drive Screws
Stainless Steel Button Head Hex-Drive Screws
Image may differ from product. See technical specification for details.
Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
Key Features & Benefits at a Glance
- Superior corrosion resistance thanks to 18-8 stainless steel construction and passivated finish, ideal for harsh industrial environments
- Exceptional mechanical strength with 70,000 psi tensile strength and Rockwell B55 hardness for reliable, long-lasting fastening
- Precise, secure thread engagement from Class 3A UNC coarse threads, ensuring vibration resistance and reduced loosening
- Easy installation and removal with a 5/32" hex drive and rounded button head design, minimizing tool slippage
- Full thread coverage along the 9/16" length for maximum grip and load distribution in assemblies
- Compliance with major standards including ASME B18.3, RoHS 3, and REACH, guaranteeing quality and environmental safety
- Versatile right-hand coarse threading for quick assembly in a wide range of materials and applications
Professional Applications & Engineering Value
This 18-8 stainless steel rounded head screw is engineered to address common industrial challenges such as corrosion, vibration, and assembly efficiency. The passivated finish significantly enhances the natural corrosion resistance of stainless steel, making it suitable for outdoor, marine, or chemical-exposed settings. Its Class 3A UNC coarse thread provides excellent holding power in metals and plastics, reducing the risk of strip-out under dynamic loads. The combination of 70,000 psi tensile strength and a rounded button head with hex drive ensures reliable performance in tight spaces, commonly used in machinery, automotive components, and electronic enclosures where both strength and a low-profile head are critical.
Specification Summary & Compliance
This screw features precise UNC 1/4"-20 coarse threads with Class 3A fit for high tolerance and durability. It is manufactured in compliance with ASME B18.3 specifications and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring it is free of hazardous substances and safe for various industrial applications.
