S-91381A678 1/2"-13 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 holding power with Class 3A thread fit for precise, vibration-resistant fastening in demanding applications.
- Non-marring brass tip protects sensitive surfaces from damage while ensuring secure component positioning.
- Enhanced durability from black-oxide alloy steel and Rockwell C28 hardness, resisting corrosion and wear.
- Easy installation and removal with a 1/4" hex drive, allowing high torque application in confined, headless designs.
- Reliable coarse UNC threading provides quick assembly and strong grip in various industrial materials.
- Compliance with ASME B18.3 ensures consistent quality and interoperability in mechanical assemblies.
- Environmental regulation adherence via RoHS 3 and REACH compliance, supporting sustainable procurement.
Professional Applications & Engineering Value
This 1/2"-13 UNC set screw is engineered to address critical challenges in industrial fastening, such as slippage and surface damage. The black-oxide alloy steel construction, combined with a Rockwell C28 hardness, offers exceptional strength and corrosion resistance, ideal for high-stress environments like machinery and automotive assemblies. The brass soft tip prevents marring on shafts, gears, and other components, making it perfect for applications requiring repeated adjustments without compromising integrity. Its coarse thread and Class 3A fit ensure quick, secure installations, reducing downtime in production lines. By meeting ASME B18.3 standards, this set screw delivers reliable performance in industrial and mechanical assemblies, enhancing overall system longevity and safety.
Specification Summary & Compliance
This product adheres to precise dimensional tolerances, including a Class 3A thread fit and UNC coarse thread specifications, ensuring accurate and repeatable fastening. It complies with ASME B18.3 for manufacturing consistency, and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety and environmental responsibility in global supply chains.
