S-98625A351 1/4"-100 x 2 1/2" Set Screws

Key Features & Benefits at a Glance

• Ultra-fine thread pitch enables precise micro-adjustments and superior vibration resistance in demanding applications
• 303 stainless steel construction provides excellent corrosion resistance and durability for long-term reliability
• Class 3A thread fit ensures tighter tolerances and superior thread engagement for critical assemblies
• Alloy steel ball tip delivers enhanced gripping power and reduced surface damage during installation
• Headless hex drive design allows for flush mounting in space-constrained applications
• RoHS 3 and REACH compliance guarantees environmental regulatory adherence for global manufacturing
• Right-hand UNS thread standard ensures compatibility with existing industrial fastener systems

Professional Applications & Engineering Value

This precision 1/4"-100 ultra fine thread set screw addresses critical engineering challenges in applications requiring micro-adjustment capabilities and reliable positioning. The 303 stainless steel body provides exceptional corrosion resistance while maintaining mechanical strength in harsh environments. The ultra-fine thread spacing combined with Class 3A thread fit delivers superior vibration resistance and precise axial positioning in precision instruments, optical equipment, and precision machinery. The alloy steel ball tip concentrates contact pressure to prevent slippage in shaft collars, gears, and pulleys, while the 3/32" hex drive facilitates secure installation in confined spaces. These headless set screws are engineered for applications where space optimization and reliable fastening under dynamic loads are paramount.

Specification Summary & Compliance

This set screw features precision UNS thread form with Class 3A thread fit tolerance, ensuring exact dimensional accuracy and reliable performance. The 1/4"-100 ultra fine thread specification provides exceptional thread engagement and adjustment precision. Manufacturing compliance includes RoHS 3 (2015/863/EU) with exemption 6(c) and full REACH (EC 1907/2006) compliance, meeting the latest environmental regulations for industrial components. The right-hand thread direction and standardized inch measurements ensure seamless integration with existing industrial fastener systems.