S-91375A535 1/4"-20 x 3/8" 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
- Exceptional corrosion resistance with Black-Oxide Alloy Steel surface treatment, ideal for harsh industrial environments.
- Superior holding power due to Rockwell C45 hardness, preventing deformation under high stress.
- Precise, reliable fastening with UNC Class 3A thread fit, ensuring minimal backlash and secure positioning.
- Easy installation and removal using the 1/8" hex drive, allowing for high-torque application in confined spaces.
- Secure grip on shafts and components with the cup tip design, reducing slippage in dynamic applications.
- Durable performance in heavy-duty use thanks to coarse threading, which resists vibration loosening.
- Compliance with major industry standards including ASME B18.3, ensuring consistent quality and safety.
Professional Applications & Engineering Value
This 1/4"-20 UNC Class 3A set screw is engineered to address common industrial challenges such as component slippage and corrosion-induced failure. The Black-Oxide Alloy Steel material provides enhanced resistance to rust and wear, extending service life in demanding settings like machinery assembly, automotive systems, and precision equipment. Its headless hex drive and coarse thread design facilitate quick, secure fastening even in tight spaces, while the cup tip ensures a firm grip on rotating parts, minimizing alignment issues. Ideal for applications requiring high-strength, vibration-resistant fasteners, this set screw delivers reliable performance in manufacturing, robotics, and heavy machinery, where precision and durability are critical.
Specification Summary & Compliance
This set screw adheres to Class 3A thread fit for precise dimensional accuracy under the UNC standard, with a thread size of 1/4"-20 and a length of 3/8". It meets ASME B18.3 specifications for manufacturing consistency and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material reliability in industrial supply chains.
