S-91375A458 3/4"-10 x 4 1/2" 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 holding power provided by the Class 3A thread fit, ensuring secure, vibration-resistant fastening.
- High-strength durability from Rockwell C45 hardened alloy steel, resisting deformation under heavy loads.
- Efficient installation and removal with the 3/8" hex drive, allowing for high torque application in confined spaces.
- Reliable shaft positioning due to the cup tip design, which bites into materials to prevent component slippage.
- Optimized for quick assembly with UNC coarse threading, reducing cross-threading risks and installation time.
- Broad industrial compliance meeting ASME B18.3, RoHS 3, and REACH standards for safe, reliable use.
Professional Applications & Engineering Value
This Black-Oxide Alloy Steel Set Screw is engineered to address critical challenges in heavy machinery, automotive, and manufacturing sectors where vibration resistance and long-term reliability are paramount. The headless design with a hex drive allows for flush mounting in tight spaces, preventing interference with moving parts. Its UNC coarse thread and Class 3A fit provide superior grip strength, minimizing loosening under dynamic loads. The cup tip ensures positive contact on shafts or collars, making it ideal for securing pulleys, gears, and couplings. Combined with Rockwell C45 hardness, this set screw delivers consistent performance in high-stress applications, reducing maintenance downtime and enhancing operational safety.
Specification Summary & Compliance
This set screw adheres to Class 3A thread tolerances for precise fit and is manufactured in accordance with ASME B18.3 specifications. It features a 3/4"-10 UNC coarse thread with right-hand direction and a length of 4-1/2". The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets environmental and safety standards for industrial use.
