S-97763A262 1/4"-20 x 3/8" ASME B18.3 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 18-8 stainless steel with black-oxide coating, ideal for harsh industrial environments and reducing replacement frequency.
- High tensile strength of 70,000 psi ensures reliable load-bearing capacity and joint integrity under stress.
- Precise Class 3A thread fit provides superior engagement and vibration resistance in demanding applications.
- 5/32" hex drive design allows for secure, high-torque installation with standard tools, minimizing slippage.
- Rounded button head profile offers a low-profile, finished appearance while reducing snagging risks.
- Full UNC coarse threading enables faster installation and better performance in softer materials or where debris is present.
- Compliance with ASME B18.3, RoHS 3, and REACH guarantees adherence to industry standards and environmental safety regulations.
Professional Applications & Engineering Value
Engineered for industrial and mechanical assemblies, these Black-Oxide 18-8 Stainless Steel Rounded Head Screws address common challenges like corrosion, vibration loosening, and installation efficiency. The stainless steel material combined with a black-oxide finish provides lasting protection against rust and chemical exposure, making them suitable for outdoor equipment, automotive components, and electronic enclosures. The 1/4"-20 UNC coarse thread and Class 3A fit ensure tight, reliable fastening in metals and plastics, reducing maintenance needs. With a hex drive and fully threaded design, they enable quick, secure assembly in confined spaces, enhancing productivity in manufacturing and repair operations.
Specification Summary & Compliance
This screw features a 1/4"-20 UNC coarse thread with Class 3A fit for precise dimensional accuracy, a length of 3/8", and a rounded button head with 5/32" hex drive. It meets ASME B18.3 manufacturing specifications and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and industry-standard reliability.
