S-98625A120 1/4"-80 x 2 3/4" Set Screws

Key Features & Benefits at a Glance

• Exceptional vibration resistance with ultra fine 1/4"-80 threads and Class 3A fit for superior holding power in demanding applications
• Corrosion-resistant performance through 303 stainless steel construction, ideal for harsh industrial environments
• Secure, flush installation enabled by headless hex design with 3/32" drive for clean, tamper-resistant assemblies
• Enhanced gripping capability from alloy steel ball tip that maintains consistent pressure without damaging components
• Precision right-hand UNS threading ensures reliable engagement and compatibility with standard industrial equipment
• Extended service life through 2 3/4" length providing ample thread engagement for critical connections
• Global compliance assurance meeting RoHS 3 and REACH regulations for international supply chain integration

Professional Applications & Engineering Value

This precision set screw delivers critical engineering solutions where vibration resistance and space constraints challenge conventional fasteners. The 303 stainless steel body provides excellent corrosion resistance for machinery exposed to moisture, chemicals, or outdoor elements, while the ultra fine thread pitch (1/4"-80) creates more thread contact points per inch, significantly enhancing grip strength in precision assemblies. The headless hex design with 3/32" drive allows installation in confined spaces where traditional screw heads won't fit, and the alloy steel ball tip concentrates pressure on a small contact area to prevent slippage in rotating components. Ideal for securing gears, pulleys, and collars on shafts in manufacturing, automotive, and aerospace applications where Class 3A thread fit ensures precise, repeatable performance.

Specification Summary & Compliance

This set screw maintains Class 3A thread fit per UNS standards with ultra fine thread spacing (1/4"-80), ensuring precise dimensional accuracy for critical assemblies. Manufacturing adheres to inch system specifications with 2 3/4" length, 0.25" thread diameter, and right-hand thread direction. The product is fully RoHS 3 (2015/863/EU) compliant with exemption 6(c) and REACH (EC 1907/2006) compliant per the June 14, 2023 Substance of Very High Concern (SVHC) listing, meeting international regulatory requirements for industrial components.