S-91688A208 1/4"-20 x 1/2" Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments
• Enhanced component protection through the permanent 304 stainless steel swivel tip that prevents surface damage
• Reliable torque transmission with the 1/8" hex drive design for secure installation in confined spaces
• Consistent thread engagement ensured by Class 2A UNC coarse threads for quick assembly and vibration resistance
• Extended service life from Rockwell C54 hardness, maintaining performance under repeated adjustments
• Precise angular positioning with up to 9° maximum swivel angle for accurate component alignment
• Global compliance assurance meeting RoHS 3 and REACH regulations for safe international usage

Professional Applications & Engineering Value

This 1/4"-20 UNC set screw delivers exceptional engineering value in demanding applications where component security and surface protection are critical. The 18-8 stainless steel body provides excellent corrosion resistance for machinery exposed to moisture, chemicals, or outdoor elements. The permanent swivel tip technology with 304 stainless steel construction eliminates the need for separate thrust washers while preventing marring on precision shafts, gears, and collars. The Class 2A thread fit with coarse UNC threading ensures rapid installation and maintains clamping force in high-vibration environments such as motor assemblies, conveyor systems, and rotating equipment. The headless hex design allows for flush mounting in space-constrained applications while the 9° maximum swivel angle accommodates minor misalignments without compromising holding power.

Specification Summary & Compliance

This set screw features 1/4"-20 UNC coarse threads with Class 2A thread fit for standard industrial applications. The right-hand thread direction and 1/2" length provide conventional installation characteristics. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and international market acceptance. The permanent swivel tip assembly maintains integrity throughout the product lifecycle.