S-91385A710 1/2"-13 x 3/4" 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
- Permanent vibration resistance with nylon patch thread locking that maintains secure fastening in high-stress environments
- Superior corrosion protection from black-oxide coating on alloy steel, extending service life in demanding industrial conditions
- High-strength durability with Rockwell C45 hardness, ensuring reliable performance under heavy loads
- Precise thread engagement through Class 3A fit and UNC coarse threading, enabling quick installation and reduced cross-threading risks
- Wide temperature tolerance from -50°F to 250°F, allowing consistent operation in extreme thermal environments
- Space-saving headless design with hex drive, facilitating flush mounting in confined assemblies
- Cup tip configuration for enhanced grip on shaft surfaces, minimizing slippage in torque-sensitive applications
Professional Applications & Engineering Value
Engineered for critical set screw applications requiring uncompromising holding power, this black-oxide alloy steel fastener addresses common industrial challenges like component creep and vibrational loosening. The nylon patch locking mechanism chemically bonds to mating threads, creating a permanent seal that outperforms mechanical lock washers in high-cycle machinery. Its UNC coarse thread profile and Class 3A fit ensure rapid assembly in production environments while maintaining precision alignment in pulleys, gears, and coupling systems. The combination of Rockwell C45 hardness and temperature-stable locking compound makes it ideal for automotive, heavy equipment, and manufacturing applications where reliability cannot be compromised.
Specification Summary & Compliance
This set screw maintains Class 3A thread fit tolerances per UNC standards with 1/2"-13 threading and 3/4" length. Manufacturing conforms to ASME B18.3 specifications and ASTM F912 material standards. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use in regulated industries.
