S-91385A921 5/8"-11 x 5/8" ASME B18.3, ASTM F912 Set Screws
Set Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Superior vibration resistance with nylon pellet thread locker that maintains locking performance even at temperatures up to 250°F
- Exceptional holding power due to Rockwell C28 hardness and cup point design that bites securely into mating surfaces
- Precise thread engagement with Class 3A fit ensuring reliable performance in demanding applications
- Enhanced corrosion protection from black-oxide coating on alloy steel for extended service life
- Easy installation and removal with 5/16" hex drive design requiring minimal clearance space
- Reliable coarse threading with 5/8"-11 UNC specification providing strong resistance to loosening
- Comprehensive compliance meeting ASME B18.3 standards and environmental regulations including RoHS 3 and REACH
Professional Applications & Engineering Value
This black-oxide alloy steel set screw delivers exceptional engineering value in industrial applications where vibration resistance and secure fastening are critical. The nylon pellet locking technology provides reliable vibration resistance without compromising the Class 3A thread fit precision, ensuring consistent performance in machinery, automotive assemblies, and heavy equipment. The cup point design creates positive seating and maximum grip on shafts, collars, and pulleys, while the headless configuration allows for flush mounting in space-constrained applications. Engineered to withstand demanding conditions, this UNC coarse thread set screw maintains its locking capabilities up to 250°F, making it ideal for applications exposed to moderate thermal cycling and mechanical stress.
Specification Summary & Compliance
This set screw features precise 5/8"-11 UNC coarse threads with Class 3A fit for superior thread engagement and dimensional accuracy. Manufactured in compliance with ASME B18.3 specifications and hardened to Rockwell C28 for optimal strength. The product meets RoHS 3 (2015/863/EU) compliance standards and is REACH (EC 1907/2006) compliant, ensuring environmental responsibility and regulatory adherence for industrial applications worldwide.
