S-98625A172 1/4"-100 x 3/8" Set Screws

Key Features & Benefits at a Glance

• Superior vibration resistance with ultra-fine 1/4"-100 thread spacing for maximum holding power in precision assemblies
• Excellent corrosion resistance provided by 303 stainless steel construction for long-term reliability in harsh environments
• Precise thread engagement with Class 3A fit ensuring consistent performance and reduced loosening in critical applications
• Secure installation and removal through hex drive design with 3/32" drive size for reliable torque transmission
• Enhanced gripping capability from the alloy steel ball tip that creates positive locking action on shaft components
• Space-saving headless design allowing flush mounting where clearance is limited
• Environmental compliance assurance with RoHS 3 and REACH regulations for global market acceptance

Professional Applications & Engineering Value

This precision 303 stainless steel set screw addresses critical engineering challenges in applications requiring ultra-fine thread engagement and reliable positioning. The Class 3A thread fit provides exceptional dimensional accuracy that prevents backlash in precision machinery, while the alloy steel ball tip creates concentrated pressure points for superior resistance to rotational forces. The hex drive design ensures consistent torque application during installation, crucial for assembly line efficiency. Ideal for securing gears, pulleys, and collars on shafts in manufacturing equipment, robotics, and aerospace components where vibration resistance and precise alignment are paramount. The headless configuration makes it particularly valuable in confined spaces where traditional fasteners cannot be accommodated.

Specification Summary & Compliance

Manufactured to UNS thread standards with precise Class 3A thread fit tolerances for superior engagement. The 1/4"-100 ultra-fine thread spacing provides enhanced holding power with right-hand thread direction. This set screw features a 3/8" length and 3/32" hex drive size for consistent installation. Fully compliant with RoHS 3 (2015/863/EU) regulations with exemption 6(c) and REACH (EC 1907/2006) requirements as of 06/14/2023, ensuring environmental responsibility and global market acceptance.