S-97763A363 3/8"-16 x 1 1/4" ASME B18.3 Stainless Steel Button Head Hex-Drive Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with Black-Oxide coated 18-8 Stainless Steel for long-lasting performance in harsh environments.
• Superior holding power provided by fully threaded UNC coarse pattern and Class 3A thread fit for reliable, vibration-resistant connections.
• High tensile strength of 70,000 psi ensures durability and load-bearing capacity in demanding industrial applications.
• Easy installation and removal with a 7/32" hex drive and rounded button head design, reducing tool slippage and assembly time.
• Consistent quality and interchangeability guaranteed by compliance with ASME B18.3 standards for precise dimensions and performance.
• Enhanced material hardness (Rockwell B55) resists wear and deformation, extending the fastener's service life.
• Environmentally safe usage with RoHS 3 and REACH compliance, meeting global regulatory requirements for hazardous substances.

Professional Applications & Engineering Value

This Black-Oxide 18-8 Stainless Steel Rounded Head Hex Screw is engineered to address common industrial challenges such as corrosion, vibration loosening, and high-stress fatigue. The 18-8 stainless steel base material, enhanced with a Black-Oxide coating, provides excellent resistance to rust and chemical exposure, making it ideal for outdoor, marine, or chemical processing equipment. The fully threaded UNC coarse pattern and Class 3A thread fit ensure tight, secure fastening that minimizes the risk of joint failure in machinery, automotive assemblies, and structural frameworks. Its rounded head with hex drive allows for efficient torque application in confined spaces, reducing installation errors and maintenance downtime. These screws deliver reliable performance in heavy-duty fastening applications where strength, durability, and regulatory compliance are critical.

Specification Summary & Compliance

This screw features precise dimensions including a 3/8"-16 UNC thread with Class 3A fit for accurate engagement, a length of 1-1/4", and a head diameter of 0.656". It is manufactured in accordance with ASME B18.3 standards, ensuring consistent quality and performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free from restricted hazardous substances and safe for industrial use worldwide.