S-92949A317 1-72 x 1/8" 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, ensuring longevity in harsh industrial environments
• Exceptional thread engagement through Class 3A fine UNF threading, providing vibration resistance and secure fastening in precision assemblies
• High mechanical strength with 70,000 psi tensile strength and Rockwell B55 hardness, preventing stripping and deformation under load
• Optimized drive performance featuring 0.050" hex drive for reliable torque transmission and reduced cam-out risk
• Streamlined installation with rounded button head design that eliminates snagging and provides a finished appearance
• Full threading capability allowing complete engagement along the entire 1/8" length for maximum holding power
• Regulatory compliance assurance meeting ASME B18.3 specifications and environmental standards including RoHS 3 and REACH

Professional Applications & Engineering Value

Engineered for precision-critical applications, this 1-72 UNF fine thread rounded head screw delivers exceptional performance in electronic enclosures, medical devices, and aerospace components where vibration resistance and reliable fastening are paramount. The 18-8 stainless steel material combined with passivated finish provides superior protection against corrosion in challenging environments, while the Class 3A thread fit ensures precise engagement in tapped holes. The rounded button head design minimizes protrusion risks in confined spaces, and the hex drive configuration enables efficient installation in high-volume production settings. These fully threaded screws maintain consistent clamping force across the entire engagement length, making them ideal for applications requiring uniform stress distribution and maximum retention in thin materials.

Specification Summary & Compliance

This precision fastener features Class 3A thread fit with 1-72 UNF fine threading and full threading along the 1/8" length. Manufactured to exacting ASME B18.3 specifications, it ensures dimensional accuracy and interchangeability. The screw demonstrates compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, confirming its suitability for global industrial applications requiring strict material restrictions and safety standards.