S-92949A628 3/8"-16 x 1 1/2" ASME B18.3 Stainless Steel Button Head Hex-Drive Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction and passivated finish for extended service life in harsh environments
• Exceptional thread engagement with Class 3A precision fit ensures secure fastening and vibration resistance in critical applications
• High-strength performance with 70,000 psi tensile strength and Rockwell B55 hardness for demanding industrial applications
• Optimized drive efficiency through 7/32" hex drive design providing superior torque transmission and reduced cam-out risk
• Full-threaded design maximizes grip length and load distribution across the entire fastener
• Coarse UNC threading enables quick assembly and superior performance in materials requiring enhanced pull-out resistance
• Regulatory compliance meets ASME B18.3 standards and environmental regulations including RoHS 3 and REACH

Professional Applications & Engineering Value

This 18-8 stainless steel rounded head screw delivers exceptional engineering value in industrial applications where corrosion resistance and mechanical reliability are paramount. The Class 3A thread fit provides precise tolerances that eliminate play and prevent loosening under vibration, making it ideal for machinery, equipment assembly, and structural applications. The passivated finish enhances the natural corrosion resistance of stainless steel, while the hex drive design ensures secure tool engagement during high-torque installation. With coarse UNC threading and full threading along the 1-1/2" length, this fastener offers superior pull-out resistance in various materials including metals, plastics, and composite substrates commonly found in manufacturing and heavy equipment applications.

Specification Summary & Compliance

This high-performance fastener features 3/8"-16 UNC coarse threading with Class 3A precision thread fit for exceptional dimensional accuracy. Manufactured to ASME B18.3 specifications, the screw maintains strict dimensional tolerances throughout its design. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across various industrial sectors. Mechanical properties include 70,000 psi tensile strength and Rockwell B55 hardness, providing reliable performance in demanding applications.