S-91381A691 6-32 x 3/16" ASME B18.3 Set Screws

Key Features & Benefits at a Glance

• Superior surface protection with brass soft tip to prevent damage to mating components during installation and adjustment
• Exceptional holding power achieved through Class 3A thread fit precision for secure fastening in demanding applications
• Enhanced durability from black-oxide coated alloy steel with Rockwell C28 hardness for corrosion resistance and long service life
• Optimized installation efficiency with 1/16" hex drive headless design allowing flush mounting in confined spaces
• Reliable coarse thread engagement using 6-32 UNC threads for quick assembly and vibration resistance in industrial equipment
• Broad compatibility with standard UNC threading systems commonly used in machinery and precision instruments
• Reduced maintenance requirements through material and coating combination that withstands harsh operating environments

Professional Applications & Engineering Value

This 6-32 UNC set screw delivers critical engineering solutions for industrial applications where precision positioning and vibration resistance are paramount. The black-oxide alloy steel construction provides excellent corrosion protection while maintaining the Rockwell C28 hardness needed for repeated adjustments without deformation. The brass soft tip is specifically engineered to protect expensive shaft surfaces and precision components from marring during installation, making it ideal for precision machinery, motor assemblies, and rotational equipment. The headless design with 1/16" hex drive enables flush mounting in space-constrained applications while providing sufficient torque transmission. These features combine to solve common industrial challenges of component damage, loosening under vibration, and corrosion-induced failure.

Specification Summary & Compliance

This set screw maintains Class 3A thread fit tolerances for precision engagement and meets ASME B18.3 dimensional standards. The manufacturing process ensures consistent 6-32 UNC coarse thread geometry with right-hand threading direction. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations confirms environmental responsibility and material safety. The product features a 3/16" length with 0.138" thread diameter and incorporates a 0.031" long brass tip with 0.063" diameter for controlled surface contact.