S-92314A408 5/16"-18 x 5 1/4" 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 environments and long-term reliability
• Exceptional mechanical strength with 70,000 psi tensile strength and Rockwell B70 hardness for heavy-duty load-bearing applications
• Reliable coarse UNC threading ensures faster installation and reduced risk of cross-threading in industrial assemblies
• Optimized partial threading provides secure clamping force while allowing flexibility in material thickness
• Precise Class 2A thread fit guarantees consistent engagement and vibration resistance in dynamic operations
• Standard-compliant design meeting ASME B18.2.1 specifications for interchangeability and quality assurance
• Environmentally responsible manufacturing with full compliance to RoHS 3 and REACH regulations

Professional Applications & Engineering Value

This 5/16"-18 UNC hex head screw delivers critical performance in demanding industrial applications where corrosion resistance and structural integrity are paramount. The 18-8 stainless steel material effectively combats oxidation and chemical exposure, extending service life in machinery, structural frames, and outdoor equipment. Its coarse thread design and partial threading enable rapid assembly and secure fastening in varying material thicknesses, reducing installation time while maintaining high clamp load. The external hex drive and standardized ASME B18.2.1 dimensions ensure compatibility with common tools and replacement parts, streamlining maintenance operations and minimizing downtime in production environments.

Specification Summary & Compliance

Manufactured to precise inch system dimensions with Class 2A thread fit tolerance for consistent performance. Thread specifications adhere to 5/16"-18 UNC coarse thread standards with right-hand orientation. Complies with ASME B18.2.1 mechanical and dimensional requirements, and meets environmental regulations including RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance for hazardous substance restrictions.