S-97763A367 1/2"-13 x 1 1/2" ASME B18.3 Stainless Steel Button Head Hex-Drive Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with Black-Oxide coated 18-8 Stainless Steel, ideal for harsh industrial environments and extended service life.
• High-strength fastening with a tensile strength of 70,000 psi and Rockwell B55 hardness, ensuring reliable performance under heavy loads.
• Precise and secure thread engagement thanks to the Class 3A thread fit and UNC coarse thread design, reducing the risk of cross-threading and stripping.
• Efficient installation and removal with a 5/16" hex drive and rounded button head, allowing for high torque application and a clean, low-profile finish.
• Full thread coverage along the 1 1/2" length provides maximum grip and holding power in a wide range of material thicknesses.
• Compliance with major industry standards including ASME B18.3, ensuring dimensional consistency, reliability, and interchangeability.
• Environmentally responsible manufacturing with RoHS 3 and REACH compliance, meeting strict global regulations for hazardous substances.

Professional Applications & Engineering Value

Engineered for demanding industrial applications, these 1/2"-13 UNC hex drive rounded head screws provide a robust solution where vibration resistance, strength, and corrosion protection are critical. The Black-Oxide 18-8 Stainless Steel construction combats rust and chemical exposure, making them suitable for outdoor equipment, machinery, and assembly lines. The coarse thread spacing and Class 3A thread fit ensure rapid assembly and a secure, vibration-resistant connection in softer materials or where quick disassembly is required. The combination of 70,000 psi tensile strength and a fully threaded design delivers exceptional clamp load and pull-out resistance, solving common failure points in heavy-duty fastening scenarios.

Specification Summary & Compliance

This screw features a 1/2"-13 UNC thread with a Class 3A fit for precise dimensional accuracy and a coarse thread spacing. It is manufactured in compliance with the ASME B18.3 standard, ensuring consistent quality and performance. The product is also confirmed to be RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, adhering to environmental and safety regulations for hazardous substances.