S-91375A542 1/4"-20 x 1" 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.
- High-strength alloy steel construction with Rockwell C45 hardness ensures reliable, long-term holding power under heavy loads.
- Precise Class 3A thread fit provides tighter tolerances for secure fastening and reduced risk of loosening in critical assemblies.
- UNC coarse threading enables quick installation and removal, saving time in maintenance and production cycles.
- 1/8" hex drive design allows for easy torque application with standard tools, minimizing slippage and tool wear.
- Cup point tip bites firmly into shafts and components, preventing rotation and ensuring stable positioning.
- Compliance with ASME B18.3, RoHS 3, and REACH guarantees consistent quality and environmental safety for global supply chains.
Professional Applications & Engineering Value
This black-oxide alloy steel set screw is engineered to address common industrial challenges such as component slippage and corrosion-induced failure. Its UNC coarse thread and Class 3A fit deliver exceptional grip in high-vibration settings, making it ideal for securing gears, pulleys, and collars in machinery and automotive systems. The cup point tip provides deep embedding into materials, resisting rotational forces without damaging surfaces. With Rockwell C45 hardness, it maintains integrity under repetitive stress, while the hex drive ensures straightforward installation in confined spaces. Suitable for OEM and MRO applications, this screw enhances assembly reliability while meeting stringent ASME B18.3 specifications for consistent performance.
Specification Summary & Compliance
This set screw adheres to Class 3A thread fit for precise dimensional accuracy and UNC coarse thread standards with a 1/4"-20 size. Manufactured in compliance with ASME B18.3 and ASTM F912 specifications, it ensures uniform quality. The product is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, confirming it is free from hazardous substances and safe for industrial use globally.
