S-91375A358 5/16"-24 x 7/8" 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
- Superior corrosion resistance with black-oxide coating, extending service life in harsh industrial environments.
- Exceptional thread precision with Class 3A fit for reliable, vibration-resistant fastening in critical assemblies.
- High-strength durability from alloy steel and Rockwell C45 hardness, preventing deformation under heavy loads.
- Secure, flush mounting thanks to the headless design and cup tip, minimizing protrusion and slippage.
- Easy installation and removal with a 5/32" hex drive, allowing efficient torque application in confined spaces.
- Fine thread engagement with 5/16"-24 UNF threads, providing enhanced clamping force and adjustment accuracy.
- Compliance with global standards including ASME B18.3, RoHS 3, and REACH, ensuring safety and regulatory acceptance.
Professional Applications & Engineering Value
This black-oxide alloy steel set screw is engineered to address common industrial challenges such as component slippage, corrosion-induced failure, and assembly inaccessibility. Its headless design and cup tip ensure a secure, flush fit against shafts or collars, preventing rotational movement in machinery like motors, gears, and couplings. The Class 3A UNF fine threads deliver precise axial clamping with minimal risk of loosening under vibration, while the Rockwell C45 hardness maintains integrity in high-stress applications. Ideal for industrial set screws usage in automotive, aerospace, and heavy equipment, it combines corrosion resistance with high-strength performance, reducing maintenance downtime and enhancing operational reliability.
Specification Summary & Compliance
This set screw adheres to ASME B18.3 specifications with 5/16"-24 UNF Class 3A fine threads, ensuring tight tolerances for precision fits. It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, confirming it is free from hazardous substances. Manufactured from alloy steel with a black-oxide finish, it maintains dimensional accuracy and is suitable for right-hand thread applications requiring reliable, long-term fastening.
