S-92703A405 1/4"-20 x 1/2" ASME B18.3 Stainless Steel Torx Flat Head Screws
Stainless Steel Torx Flat 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
- Superior corrosion resistance with 18-8 stainless steel and passivated finish, ideal for harsh industrial environments.
- Enhanced torque transmission and reduced cam-out thanks to the Torx Plus IP27 drive, ensuring secure fastening and longer tool life.
- High tensile strength of 60,000 psi and Rockwell B70 hardness for reliable performance in demanding applications.
- Precise Class 2A thread fit and UNC coarse threading for easy alignment and consistent assembly.
- Standard 82° countersink angle and flat head design for a flush, professional finish that minimizes protrusion.
- Full threading along the 1/2" length provides maximum grip and uniform load distribution across the joint.
- Compliance with ASME B18.3, RoHS 3, and REACH ensures quality, safety, and environmental standards are met.
Professional Applications & Engineering Value
Engineered for precision and durability, these 1/4-20 UNC flat head screws are crafted from 18-8 stainless steel with a passivated finish to combat rust and chemical exposure in demanding settings like machinery, automotive, and outdoor equipment. The Torx Plus IP27 drive minimizes slippage, allowing higher torque application without damaging the fastener, which is critical for repetitive assembly lines. With a coarse thread and Class 2A fit, they ensure quick installation and reduced cross-threading risks, while the flat head profile and 82° countersink provide a sleek, low-profile finish that enhances aesthetics and safety in visible areas. Ideal for industrial screws and heavy-duty fasteners, they deliver long-term reliability under stress.
Specification Summary & Compliance
This screw features a 1/4"-20 UNC thread with Class 2A tolerance for precise fit, a Torx Plus IP27 (T27) drive, and dimensions including a 0.477" head diameter and 1/2" length. It meets ASME B18.3 specifications for dimensional accuracy and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and suitable for global industrial use.
