S-91943A510 1/4"-20 x 1/2" 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 corrosion resistance with black-oxide coating for extended service life in harsh industrial environments
- Exceptional holding power achieved through Rockwell C39 hardness and alloy steel construction
- Precise component alignment enabled by permanent swivel tip with 9° maximum angular adjustment
- Secure installation and removal facilitated by 1/8" hex drive design in headless configuration
- Reliable thread engagement with UNC coarse threads and Class 2A fit for consistent performance
- Reduced surface damage to mating components through controlled swivel tip contact
- Environmental compliance assurance meeting RoHS 3 and REACH regulations for global applications
Professional Applications & Engineering Value
This black-oxide alloy steel set screw delivers critical engineering solutions for precision assembly applications. The permanent swivel tip design prevents component marring while accommodating angular misalignments up to 9°, making it ideal for securing gears, pulleys, and collars on rotating shafts. The UNC coarse thread configuration ensures rapid installation and superior vibration resistance in heavy machinery. With Rockwell C39 hardness, this headless set screw maintains clamping force under extreme operational stresses. The 1/8" hex drive provides reliable torque transmission in confined spaces, while the black-oxide finish offers enhanced corrosion protection for industrial environments including manufacturing equipment, automotive systems, and power transmission assemblies.
Specification Summary & Compliance
Manufactured to precise dimensional standards with Class 2A thread fit and UNC thread form (1/4"-20). Features include 1/2" length, right-hand thread direction, and coarse thread spacing. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. The permanent swivel tip maintains 0.12" diameter contact surface with alloy steel construction for consistent performance across industrial applications.
