S-92186A640 3/8"-16 x 4" ASME B18.2.1 Super-Corrosion-Resistant 316 Stainless Steel Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh chemical and marine environments
• High tensile strength of 70,000 psi ensures reliable load-bearing capacity in demanding industrial applications
• Rockwell B70 hardness provides excellent durability and resistance to wear and deformation
• Class 2A thread fit offers consistent assembly performance and interchangeability with standard nuts
• Partially threaded design allows for precise clamping force control and secure fastening in variable material thicknesses
• External hex drive with 9/16" head width enables easy installation with common tools and high torque application
• Compliance with ASME B18.2.1, RoHS 3, and REACH ensures quality assurance and environmental safety for global projects

Professional Applications & Engineering Value

This 3/8"-16 UNC hex head screw in 316 stainless steel delivers exceptional performance where corrosion resistance and structural integrity are critical. The coarse thread design provides superior holding power in soft materials and faster installation in production environments. With its partially threaded configuration, engineers can achieve optimal clamp load distribution while preventing thread damage in through-holes. The external hex drive accommodates high-torque applications in confined spaces, making these industrial hex screws ideal for chemical processing equipment, marine hardware, and structural assemblies exposed to corrosive elements. The combination of 70,000 psi tensile strength and Rockwell B70 hardness ensures long-term reliability in vibration-prone applications.

Specification Summary & Compliance

This 4" length hex head screw features 3/8"-16 UNC coarse threads with Class 2A thread fit per ASME standards, ensuring precise dimensional accuracy and compatibility. Manufacturing complies with ASME B18.2.1 specifications for hex head bolts, guaranteeing consistent quality and performance. The product is fully RoHS 3 (2015/863/EU) compliant and REACH (EC 1907/2006) compliant, meeting international environmental regulations for hazardous substances. The right-hand thread direction and 1" minimum thread length provide standardized fastening solutions for industrial applications.