S-92949A637 3/8"-16 x 3 1/4" 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, ideal for harsh environments
• Exceptional mechanical strength with 70,000 psi tensile strength and Rockwell B55 hardness for heavy-duty applications
• Precise, reliable fastening ensured by Class 3A thread fit and UNC coarse threads for vibration resistance
• Efficient installation and removal with 7/32" hex drive and rounded button head design
• Full thread engagement along the entire 3 1/4" length for maximum grip and load distribution
• Industry-standard compliance with ASME B18.3 specifications for guaranteed dimensional accuracy
• Environmental and safety assurance through RoHS 3 and REACH compliance

Professional Applications & Engineering Value

This 3/8"-16 UNC rounded head hex drive screw delivers critical performance in demanding industrial settings where corrosion resistance and high tensile strength are paramount. The 18-8 Stainless Steel material, enhanced by a passivated finish, combats rust and chemical exposure in marine, food processing, and outdoor equipment. Its Class 3A thread fit and coarse UNC threading prevent loosening under vibration, making it ideal for machinery, structural assemblies, and transportation applications. The combination of 70,000 psi tensile strength and a fully threaded design ensures uniform stress distribution, reducing the risk of joint failure and maintenance downtime in heavy-duty fastening scenarios.

Specification Summary & Compliance

This screw features a 3/8"-16 UNC thread with Class 3A fit for precise engagement and coarse thread spacing. It is manufactured in compliance with ASME B18.3 standards, ensuring dimensional accuracy and interchangeability. The product is also confirmed to be RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting environmental and safety regulations for hazardous substances.