S-90152A339 5/16"-18 x 1 1/2" ASME B18.3, ASTM F837 Stainless Steel Wire-Lockable Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh industrial environments
• Superior load-bearing capability from 80,000 psi tensile strength and Rockwell B70 hardness
• Precise thread engagement with Class 3A fit for reliable, vibration-resistant fastening
• Efficient installation and removal using standard 1/4" hex drive for common tool compatibility
• Full-length threading provides maximum grip and adjustment flexibility in assemblies
• Coarse UNC threads enable quick assembly and reduced cross-threading risks
• Regulatory compliance meets RoHS 3 and REACH standards for global material safety

Professional Applications & Engineering Value

Engineered for demanding industrial applications, this socket head cap screw delivers critical performance where corrosion resistance and mechanical strength are paramount. The 18-8 Stainless Steel composition withstands corrosive environments while maintaining structural integrity under heavy loads. The 5/16"-18 UNC coarse thread configuration ensures rapid assembly in production lines and provides excellent holding power in machinery, equipment frames, and precision instruments. With its Class 3A thread fit and fully threaded design, it eliminates loosening in high-vibration settings, making it ideal for automotive, manufacturing, and marine applications where reliability cannot be compromised.

Specification Summary & Compliance

This socket head cap screw features precision Class 3A thread fit with 5/16"-18 UNC coarse threads in right-hand direction. Manufactured to ASME B18.3 specifications with full compliance to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations. The inch-system fasteners maintain dimensional accuracy across all critical parameters including head diameter (15/32"), length (1-1/2"), and drive size (1/4" hex).