S-91385A162 5/16"-24 x 1/4" ASME B18.3, ASTM F912 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
- Permanent vibration resistance with nylon patch locking that maintains secure fastening from -50°F to 250°F
- Superior thread precision with Class 3A fit ensuring consistent engagement and reduced assembly play
- Enhanced corrosion protection through black-oxide coating on alloy steel for extended service life
- Reliable point contact with cup tip design providing excellent grip and minimal surface damage
- High-strength performance backed by Rockwell C45 hardness for demanding industrial applications
- Space-saving installation with headless hex design allowing flush mounting in confined spaces
- Industry-standard compliance meeting ASME B18.3 specifications for guaranteed interoperability
Professional Applications & Engineering Value
This 5/16"-24 UNF set screw delivers critical vibration resistance in high-stress assemblies where loosening could compromise system integrity. The nylon patch locking technology creates permanent friction against mating threads, eliminating the need for secondary locking devices while maintaining performance across extreme temperature ranges (-50°F to 250°F). Manufactured from black-oxide alloy steel with Rockwell C45 hardness, it withstands repeated torque applications in machinery, automotive, and aerospace components. The cup point design concentrates pressure for maximum holding power without excessive penetration, while the headless hex configuration enables seamless integration where protruding fasteners are impractical. These engineering features combine to prevent costly downtime in precision equipment and rotating assemblies.
Specification Summary & Compliance
This set screw features Class 3A thread fit precision with 5/16"-24 UNF fine threads and right-hand direction. The 1/4" length and 5/32" hex drive provide standardized installation compatibility. Manufacturing complies with ASME B18.3 specifications and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations for global industrial use.
