S-97654A361 1/2"-13 x 3" Stainless Steel Flanged Button Head Hex-Drive Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance from 18-8 stainless steel and passivated finish, ideal for harsh environments
• High tensile strength of 70,000 psi ensures reliable performance under heavy loads
• Secure, slip-resistant installation with 5/16" hex drive and wide rounded button head design
• Precise thread engagement with Class 3A UNC coarse threads for faster assembly and vibration resistance
• Enhanced load distribution from the integrated flange, reducing surface pressure
• Durable material hardness (Rockwell B70) maintains integrity through repeated use
• Compliance with RoHS 3 and REACH ensures safe, environmentally responsible sourcing

Professional Applications & Engineering Value

Engineered for demanding industrial settings, this 18-8 stainless steel rounded head screw combines high tensile strength and a passivated finish to resist corrosion in moisture-rich or chemical-exposed environments. The UNC coarse thread and Class 3A thread fit enable quick, accurate fastening with reduced cross-threading risks, while the partially threaded shank and flanged design improve clamping force and distribute stress evenly across joined materials. Ideal for machinery, structural assemblies, and heavy equipment, this hex drive screw delivers consistent performance where vibration resistance and long-term reliability are critical.

Specification Summary & Compliance

This screw meets UNC coarse thread standards with a Class 3A thread fit for precise dimensional accuracy. It is manufactured from 18-8 stainless steel with a passivated surface finish, and complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations.