S-91385A616 3/8"-16 x 5/16" 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
- Vibration-resistant locking with nylon patch thread locker maintains secure fastening in high-stress environments
- Superior corrosion protection from black-oxide coating extends service life in demanding industrial conditions
- Precise Class 3A thread fit ensures reliable engagement and consistent clamping force in critical assemblies
- High-strength alloy steel construction with Rockwell C45 hardness provides exceptional durability and load-bearing capacity
- Wide temperature tolerance (-50°F to 250°F) maintains locking performance across diverse operating environments
- Hex headless design allows flush mounting in space-constrained applications while enabling high torque installation
- Cup tip configuration creates positive seating and prevents component slippage during operation
Professional Applications & Engineering Value
This 3/8"-16 UNC set screw delivers exceptional engineering value in industrial applications where vibration resistance and precise positioning are critical. The black-oxide alloy steel construction combined with Class 3A thread fit ensures reliable performance in machinery components, automotive assemblies, and precision equipment. The integrated nylon patch thread locker effectively counters loosening from continuous vibration, while the cup tip design provides positive engagement with mating surfaces. This hex headless set screw is particularly valuable in applications requiring flush mounting and high clamping force, making it ideal for shaft collars, gear hubs, and coupling applications where space optimization and vibration resistance are paramount concerns.
Specification Summary & Compliance
Manufactured to exacting standards with Class 3A thread fit precision and UNC coarse thread spacing for optimal engagement. This set screw conforms to ASME B18.3 specifications and ASTM F912 manufacturing standards. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across global industrial markets.
