S-92949A542 1/4"-20 x 1" 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 industrial environments
• Exceptional mechanical strength delivering 70,000 psi tensile strength and Rockwell B55 hardness for reliable, long-term fastening
• Precision Class 3A thread fit ensures secure engagement and vibration resistance in demanding applications
• Easy installation and removal with 5/32" hex drive design, providing superior torque transmission
• Low-profile button head design offers a smooth, rounded finish while maintaining strong clamping force
• Full threading along 1" length provides maximum grip and load distribution across the entire fastener
• Regulatory compliance assurance with ASME B18.3 standards and RoHS 3/REACH environmental regulations

Professional Applications & Engineering Value

This 1/4-20 UNC rounded head screw delivers critical engineering value through its 18-8 stainless steel composition and passivated finish, specifically engineered to combat corrosion in demanding industrial environments. The Class 3A thread fit provides superior vibration resistance compared to standard fasteners, making it ideal for machinery, equipment assembly, and structural applications where loosening under dynamic loads is a concern. The combination of 70,000 psi tensile strength and fully threaded design ensures maximum load distribution, while the hex drive button head offers both aesthetic appeal and practical installation benefits. These industrial screws solve common challenges of material degradation, thread stripping, and maintenance accessibility in manufacturing, automotive, and marine applications.

Specification Summary & Compliance

This fastener features precision 1/4"-20 UNC coarse threads with Class 3A fit for superior dimensional accuracy and engagement. Manufacturing complies with ASME B18.3 specifications, ensuring consistent quality and performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, confirming its suitability for global industrial applications without hazardous substance restrictions.