S-91375A114 4-48 x 1/8" 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 holding power from Class 3A thread fit, ensuring precise, vibration-resistant fastening in critical assemblies.
- High-strength durability with Rockwell C45 hardness, providing reliable performance under heavy loads and stress.
- Secure, slip-resistant installation using the 0.050" hex drive, allowing for high torque application in confined spaces.
- Effective surface grip from the cup tip design, minimizing component movement and damage in shaft-collars and pulleys.
- Fine thread engagement with 4-48 UNF right-hand threads, offering improved adjustment accuracy and load distribution.
- Compliance with major industry standards including ASME B18.3, RoHS 3, and REACH, ensuring safety and regulatory acceptance.
Professional Applications & Engineering Value
This 4-48 UNF Class 3A set screw is engineered to address common industrial challenges such as component slippage, vibration loosening, and corrosion in demanding applications. The black-oxide alloy steel construction, combined with Rockwell C45 hardness, delivers robust strength and resistance to environmental factors, making it ideal for machinery, automotive, and precision equipment assemblies. Its headless design and fine threads allow for flush mounting and secure fastening in tight spaces, while the cup tip ensures maximum grip on shafts and rotating parts. This hex drive set screw provides reliable performance in high-stress environments, reducing maintenance needs and enhancing operational longevity.
Specification Summary & Compliance
This set screw adheres to Class 3A thread fit for precise dimensional accuracy and is manufactured in accordance with ASME B18.3 specifications. It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring it is free from hazardous substances and suitable for global industrial use. The product features a UNF fine thread with a diameter of 0.112" and a length of 1/8", designed for reliable performance in inch-based measurement systems.
