S-92949A150 6-32 x 5/8" ASME B18.3 Stainless Steel Button Head Hex-Drive Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance thanks to 18-8 stainless steel construction and passivated finish, ideal for harsh industrial environments.
• Exceptional mechanical strength with a tensile strength of 70,000 psi and Rockwell B55 hardness for reliable, long-lasting fastening under stress.
• Precise, reliable thread engagement with Class 3A thread fit and UNC coarse threads, ensuring secure installation and vibration resistance.
• Easy installation and removal with a 5/64" hex drive, providing a positive grip and reducing the risk of tool slippage and damage.
• Versatile button head design offers a low-profile, rounded head that is aesthetically pleasing and reduces snagging in assembled products.
• Full threading along the 5/8" length maximizes grip and holding power across the entire fastener for superior joint integrity.
• Compliance with major industry standards including ASME B18.3, RoHS 3, and REACH, ensuring product safety and environmental responsibility.

Professional Applications & Engineering Value

This 6-32 UNC screw is engineered from 18-8 stainless steel to solve critical challenges in industrial assembly, such as corrosion-induced failure and joint loosening under vibration. The passivated finish significantly enhances the natural corrosion resistance of the stainless steel, making it an excellent choice for applications exposed to moisture, chemicals, or outdoor elements. The combination of a coarse thread and Class 3A thread fit provides a tighter, more precise fit than standard threads, which is crucial for maintaining clamp load in machinery, electronic enclosures, and automotive components. The hex drive and button head design facilitate installation in confined spaces while providing a clean, finished appearance. This fastener delivers reliable performance in demanding sectors, from aerospace to marine equipment, where material integrity and compliance with specifications like ASME B18.3 are non-negotiable.

Specification Summary & Compliance

This screw adheres to precise dimensional standards with a UNC thread form, Class 3A thread fit for superior tolerance, and a length of 5/8". It is manufactured in compliance with the ASME B18.3 specification. The product is also confirmed to be RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, ensuring it meets stringent environmental and safety regulations for hazardous substances.