S-92505A621 3/8"-16 x 5/8" ASME B18.3, ASTM F912 Set Screws

Key Features & Benefits at a Glance

• Superior holding power with extended tip design that bites deeper into materials for maximum grip and vibration resistance
• Exceptional durability from Rockwell C45 hardened alloy steel that withstands heavy loads and repeated adjustments
• Precise thread engagement with Class 3A fit ensuring tight tolerances and reliable performance in critical applications
• Corrosion-resistant black oxide coating that protects against rust and extends service life in demanding environments
• Easy installation and removal with 3/16" hex socket drive that provides secure tool engagement without stripping
• Space-saving headless design allowing flush mounting where clearance is limited or rotating parts are present
• Industry-standard compliance meeting ASME B18.3 specifications for consistent quality and interchangeability

Professional Applications & Engineering Value

This 3/8"-16 UNC set screw delivers exceptional engineering value in applications requiring secure component positioning and torque transmission. The black oxide alloy steel construction combined with Rockwell C45 hardness provides the necessary strength to prevent deformation under high clamping forces, while the extended tip design ensures positive engagement with shaft collars, pulleys, and gears. The coarse thread spacing and Class 3A thread fit maintain precise alignment in vibrating machinery, preventing loosening in industrial equipment, automotive assemblies, and power transmission systems. The headless configuration and right-hand thread direction make it ideal for confined spaces where rotating components must operate without interference.

Specification Summary & Compliance

This set screw features precision 3/8"-16 UNC coarse threads with Class 3A thread fit for superior dimensional accuracy. Manufacturing complies with ASME B18.3 specifications where applicable, ensuring consistent performance and interchangeability. The product meets RoHS 3 (2015/863/EU) compliance for restricted substance control and REACH (EC 1907/2006) regulations regarding chemical safety. Critical dimensions include 5/8" length with extended tip measuring 0.25" diameter and 0.099" length, maintaining tight tolerances for reliable industrial performance.