S-92198A139 1 3/8"-6 x 4" ASME B18.2.1 18-8 Stainless Steel Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments
• High tensile strength of 80,000 psi ensures reliable performance under heavy loads and vibration
• Rockwell B70 hardness provides excellent durability and resistance to wear
• Coarse UNC threading with Class 2A fit offers quick assembly and secure fastening in various materials
• Partially threaded design allows for precise clamping force control and reduced thread galling
• External hex drive and large head enables easy installation with standard tools and high torque application
• Compliance with ASME B18.2.1, RoHS 3, and REACH guarantees quality, safety, and environmental standards

Professional Applications & Engineering Value

This 1 3/8"-6 UNC hex head screw in 18-8 stainless steel addresses critical industrial needs by combining corrosion resistance with high mechanical strength. The coarse thread and Class 2A fit ensure rapid, secure fastening in structural applications, reducing installation time and minimizing cross-threading risks. Its partially threaded configuration provides optimal stress distribution, preventing joint failure in heavy machinery, construction, and marine equipment. With an external hex drive and substantial head dimensions, it supports high-torque operations, making it a dependable choice for industrial hex screws in demanding environments where reliability and compliance are paramount.

Specification Summary & Compliance

This screw features a 1 3/8"-6 UNC thread with Class 2A thread fit for precise dimensional accuracy, a 4" length, and partial threading. It is manufactured to meet ASME B18.2.1 specifications, ensuring consistent quality and interchangeability. Additionally, it complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety for use in various industrial sectors without hazardous substances.