S-91772A630 5/16"-18 x 1 3/4" ASME B18.6.3 Stainless Steel Pan Head Phillips Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with passivated 18-8 stainless steel construction, ideal for harsh environments and outdoor applications
• High tensile strength of 70,000 psi ensures reliable fastening under heavy loads and mechanical stress
• Excellent thread engagement with Class 2A UNC coarse threads for quick installation and secure hold in various materials
• Durable Rockwell B70 hardness provides exceptional wear resistance and maintains thread integrity over repeated use
• Easy installation and removal with No. 4 Phillips drive and standard pan head design for common tool compatibility
• Full threading along the 1-3/4" length offers maximum grip and adjustment flexibility in assembly applications
• Compliance with major industry standards including ASME B18.6.3, RoHS 3, and REACH for quality assurance and regulatory acceptance

Professional Applications & Engineering Value

These passivated 18-8 stainless steel pan head screws deliver exceptional performance in demanding industrial environments where corrosion resistance and mechanical reliability are critical. The combination of 70,000 psi tensile strength and Rockwell B70 hardness ensures these fasteners maintain structural integrity under vibration and load stress, making them ideal for machinery assembly, electrical enclosures, and structural frameworks. The UNC coarse thread design with Class 2A fit provides superior engagement in both metals and plastics, reducing installation time while preventing cross-threading. The fully threaded configuration offers maximum clamping force distribution, while the pan head with Phillips drive ensures compatibility with standard tools for efficient maintenance and serviceability in manufacturing, construction, and marine applications.

Specification Summary & Compliance

This fastener features precision 5/16"-18 UNC coarse threads with Class 2A thread fit tolerances for consistent performance. Manufactured to ASME B18.6.3 specifications for dimensional accuracy and mechanical properties. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use in various industrial applications without hazardous substance restrictions.