S-91375A757 1-72 x 1/4" ASME B18.3 Set Screws
Set Screws
Image may differ from product. See technical specification for details.
Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
Key Features & Benefits at a Glance
- Superior holding power with cup tip design that bites into surfaces for maximum resistance against loosening
- Exceptional thread precision with Class 3A fit ensuring tight tolerances and reliable performance in critical applications
- Enhanced corrosion resistance through Black-Oxide coating on alloy steel for extended service life in demanding environments
- High-strength durability with Rockwell C45 hardness maintaining structural integrity under heavy loads and vibration
- Space-saving installation through headless design allowing flush mounting in confined spaces
- Secure torque transmission via 0.035" hex drive providing positive engagement with standard tools
- Fine thread advantage with UNF 1-72 spacing offering increased adjustment precision and load distribution
Professional Applications & Engineering Value
This Black-Oxide Alloy Steel set screw delivers critical engineering solutions where vibration resistance and precision alignment are paramount. The combination of Class 3A thread fit and fine UNF threading ensures zero backlash in precision machinery, while the cup tip design creates permanent seating in shafts, collars, and gears. The headless configuration enables seamless integration in compact assemblies, making it ideal for aerospace components, medical devices, and automotive systems where space optimization and reliable fastening are critical. The Rockwell C45 hardness provides the necessary strength to withstand rotational forces without deformation, solving common challenges of component slippage in high-torque applications.
Specification Summary & Compliance
Manufactured to exacting ASME B18.3 standards with Class 3A thread fit precision and UNF 1-72 fine threading. The Black-Oxide Alloy Steel construction meets Rockwell C45 hardness specifications for optimal strength. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across global industrial markets.
