S-92949A832 1/4"-20 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
- Superior corrosion resistance with 18-8 stainless steel construction and passivated finish, ideal for harsh industrial environments.
- High-strength fastening performance delivering 70,000 psi tensile strength and Rockwell B55 hardness for reliable, durable connections.
- Precise, secure thread engagement with Class 3A thread fit and UNC coarse threads, reducing the risk of cross-threading and ensuring consistent assembly.
- Easy installation and removal using a standard 5/32" hex drive, providing a secure grip and minimizing tool slippage.
- Low-profile, rounded button head design offers a smooth finish that reduces snagging and improves safety in applications with moving parts.
- Full threading along the 1/4" length allows for maximum adjustability and grip in a variety of material thicknesses.
- Compliance with major industry standards including ASME B18.3, RoHS 3, and REACH, ensuring product reliability and environmental safety.
Professional Applications & Engineering Value
This 1/4"-20 UNC Rounded Head Screw is engineered from 18-8 Stainless Steel with a passivated finish to combat corrosion in demanding settings like machinery, automotive assemblies, and outdoor equipment. The coarse UNC thread and Class 3A thread fit provide excellent engagement in both metals and plastics, reducing installation time and preventing stripping. The hex drive and button head design ensure a flush fit, making these fully threaded screws ideal for applications where a low profile is critical to avoid interference. With a 70,000 psi tensile strength, they handle high-stress loads, offering long-term reliability for OEMs and maintenance teams seeking durable, precision industrial screws.
Specification Summary & Compliance
This screw features a 1/4"-20 UNC coarse thread with a Class 3A thread fit for precise dimensional accuracy. It is manufactured in accordance with ASME B18.3 specifications and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring it meets strict industry and safety standards for global use.
