S-91381A633 3/8"-16 x 1 1/4" ASME B18.3 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 on Alloy Steel, extending service life in harsh industrial environments.
- Precise, reliable thread engagement with Class 3A UNC coarse threads, ensuring vibration resistance and secure fastening.
- Non-marring, soft brass tip protects sensitive surfaces from damage during installation and adjustment.
- High strength-to-weight ratio from Alloy Steel with Rockwell C28 hardness, providing excellent holding power for heavy-duty applications.
- Easy installation and removal with a 3/16" hex drive, allowing for efficient assembly in confined spaces.
- Headless, low-profile design minimizes protrusion, ideal for applications where space is limited.
- Compliance with major industry standards including ASME B18.3, RoHS 3, and REACH, ensuring safety and regulatory adherence.
Professional Applications & Engineering Value
This Black-Oxide Alloy Steel set screw is engineered to address critical challenges in industrial assembly, such as component slippage and surface damage. The 3/8"-16 UNC Class 3A coarse threads provide superior grip and vibration resistance, making it ideal for securing pulleys, gears, and collars on rotating shafts. The soft brass tip prevents marring on precision-machined components, while the hex drive ensures easy torque application in tight spaces. Its headless design and robust Rockwell C28 hardness offer reliable performance in machinery, automotive, and aerospace applications, reducing maintenance needs and enhancing operational safety.
Specification Summary & Compliance
This set screw features precision 3/8"-16 UNC Class 3A threads with coarse spacing for optimal engagement. It meets ASME B18.3 manufacturing specifications, ensuring dimensional accuracy and performance reliability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its adherence to environmental and safety standards for industrial use.
