S-92311A172 6-40 x 1/4" ASME B18.3 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction for long-term reliability in harsh environments
• Precise Class 3A thread fit ensures tight, secure fastening with minimal backlash in critical assemblies
• Enhanced torque transmission through 1/16" hex drive design prevents tool slippage and damage during installation
• Maximum holding power with cup point tip that bites into shaft materials for permanent positioning
• Consistent performance maintained by Rockwell B80 hardness for durability under repeated adjustments
• Space-saving headless design allows flush mounting where clearance is limited
• Regulatory compliance assurance with RoHS 3 and REACH standards for global industrial applications

Professional Applications & Engineering Value

This 6-40 UNF Class 3A set screw delivers exceptional engineering value in precision assemblies requiring secure shaft positioning. The 18-8 stainless steel construction provides excellent corrosion resistance for demanding environments like marine equipment, food processing machinery, and outdoor industrial applications. The fine thread UNF configuration with Class 3A fit ensures vibration resistance in high-speed rotating components, while the cup point design creates permanent seating in pulley systems, gears, and coupling assemblies. The 1/16" hex drive accommodates standard tools without stripping, and the headless format enables seamless integration in confined spaces where protruding fasteners are impractical. This combination of material properties and precision engineering solves common challenges of component slippage, corrosion-induced failure, and installation damage in critical motion control systems.

Specification Summary & Compliance

Manufactured to ASME B18.3 specifications with Class 3A thread fit for superior dimensional accuracy. Features 6-40 UNF fine threads with right-hand direction, 1/4" length, and 1/16" hex drive. Constructed from 18-8 stainless steel with Rockwell B80 hardness. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations for industrial use.