S-92198A918 1"-8 x 3 1/2" ASME B18.2.1 18-8 Stainless Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance from 18-8 stainless steel construction, ideal for harsh industrial environments
• High tensile strength of 80,000 psi ensures reliable performance in demanding applications
• Rockwell B70 hardness provides superior durability and wear resistance
• External hex drive design allows for easy installation with standard tools and high torque transmission
• Class 2A thread fit with UNC coarse threading delivers secure fastening and resistance to vibration loosening
• Partially threaded design optimizes grip length for precise clamping force distribution
• Full compliance with ASME B18.2.1 standards guarantees dimensional accuracy and interchangeability

Professional Applications & Engineering Value

This 1"-8 UNC hex head screw in 18-8 stainless steel addresses critical engineering challenges in industrial fastening systems. The coarse thread design provides superior resistance to vibration and thermal cycling, making it ideal for heavy machinery, structural assemblies, and equipment subjected to dynamic loads. The partially threaded configuration ensures optimal stress distribution while the external hex drive facilitates quick installation in confined spaces. With excellent corrosion resistance and 80,000 psi tensile strength, this fastener maintains integrity in chemical processing, marine applications, and outdoor installations where environmental factors compromise ordinary fasteners.

Specification Summary & Compliance

Manufactured to precise Class 2A thread fit tolerances with UNC coarse threading (1"-8 thread size) and 3 1/2" length. Fully compliant with ASME B18.2.1 manufacturing specifications, ensuring dimensional accuracy and mechanical performance. Meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations for safe industrial use across global markets.