S-91381A194 8-32 x 1/2" ASME B18.3 Set Screws

Key Features & Benefits at a Glance

• Precision Class 3A thread fit ensures superior vibration resistance and reliable fastening in demanding applications
• Black-oxide finish on alloy steel provides excellent corrosion resistance and enhanced durability in harsh environments
• Integrated brass soft tip prevents surface damage to mating components while maintaining secure contact
• Rockwell C28 hardness rating delivers optimal strength-to-toughness balance for long service life
• 5/64" hex drive headless design allows for flush installation and easy access in confined spaces
• 8-32 UNC coarse thread configuration enables quick assembly and superior holding power
• Full regulatory compliance meets industrial standards while ensuring environmental responsibility

Professional Applications & Engineering Value

This 8-32 UNC set screw with Class 3A thread fit addresses critical engineering challenges in precision assembly applications. The black-oxide alloy steel construction combined with Rockwell C28 hardness provides exceptional resistance to loosening under vibration, making it ideal for machinery, automotive components, and industrial equipment where reliability is paramount. The brass soft tip (0.094" diameter) eliminates marring and surface damage on shafts, collars, and precision components while maintaining positive mechanical engagement. The headless design with 5/64" hex drive facilitates installation in tight spaces and allows for flush mounting in rotating assemblies. These set screws are particularly valuable in applications requiring repeated adjustment without compromising the integrity of the fastened components.

Specification Summary & Compliance

This precision fastener features 8-32 UNC coarse threads with Class 3A thread fit for superior dimensional accuracy and consistent performance. Manufactured to ASME B18.3 specifications, the set screw maintains strict quality standards throughout production. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across various industrial sectors. With a length of 1/2" and right-hand thread direction, this component delivers reliable performance in alignment, positioning, and securing applications where precision and durability are essential.