S-91375A626 3/8"-16 x 1 1/4" 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 holding power with Class 3A thread fit ensuring tight, secure fastening in demanding applications.
- Enhanced corrosion resistance from the black-oxide finish on alloy steel, extending service life in harsh environments.
- High strength and durability with Rockwell C45 hardness, resisting wear and deformation under heavy loads.
- Easy installation and removal using the 3/16" hex drive, providing reliable torque transmission without slipping.
- Effective grip and minimal surface damage thanks to the cup tip design, ideal for repeated adjustments.
- Broad compatibility with 3/8"-16 UNC coarse threads, fitting standard components for versatile use.
- Regulatory compliance meeting ASME B18.3, ASTM F912, RoHS 3, and REACH, ensuring safety and environmental standards.
Professional Applications & Engineering Value
This 3/8"-16 UNC set screw is engineered to address critical challenges in industrial settings, such as vibration-induced loosening and component misalignment. Made from black-oxide alloy steel, it offers excellent resistance to rust and abrasion, making it suitable for machinery, automotive assemblies, and heavy equipment where exposure to moisture and stress is common. The Class 3A thread fit and coarse thread design ensure quick, secure fastening with high clamping force, reducing maintenance downtime. Its headless and hex drive configuration allows for flush mounting in confined spaces, while the cup tip provides a firm grip on shafts or collars without marring surfaces. Ideal for set screw applications requiring reliable, long-term performance under dynamic loads.
Specification Summary & Compliance
This set screw adheres to precise Class 3A thread fit tolerances per UNC standards, with a thread size of 3/8"-16 and coarse spacing for robust engagement. It meets ASME B18.3 and ASTM F912 specifications for dimensional accuracy and mechanical properties, and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material integrity.
