S-94115A539 1/4"-20 x 5/8" 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
- Enhanced Vibration Resistance: Nylon 6/6 plastic tip prevents loosening under dynamic loads, maintaining secure fastening in high-vibration environments.
- Superior Corrosion Protection: Black-oxide finish on alloy steel provides reliable rust resistance, extending service life in demanding industrial conditions.
- Precision Thread Engagement: UNC Class 3A thread fit ensures tight tolerances and reliable performance in critical assemblies.
- High-Temperature Durability: Nylon tip operates effectively from -50° to 250° F, ensuring consistent performance across extreme temperature ranges.
- Optimized Installation Torque: 1/8" hex drive allows for high torque application without stripping, facilitating efficient assembly.
- Space-Saving Design: Headless construction enables flush mounting in confined spaces where protruding fasteners are impractical.
- Industry Compliance Assurance: Meets ASME B18.3 specifications and environmental regulations (RoHS 3 & REACH) for global supply chain compatibility.
Professional Applications & Engineering Value
This black-oxide alloy steel set screw delivers exceptional engineering value in applications requiring vibration-resistant fastening. The nylon 6/6 plastic tip creates a locking mechanism that prevents back-out in machinery, automotive components, and power transmission systems subject to constant motion. The coarse UNC thread with Class 3A fit provides rapid installation while maintaining precision alignment in industrial equipment. The headless design with hex drive enables flush mounting in pulleys, gears, and collars where space constraints eliminate conventional fastener options. Combined with the temperature-resistant tip and corrosion-protected alloy steel, this set screw solves critical challenges in maintenance-heavy environments while meeting rigorous ASME B18.3 standards.
Specification Summary & Compliance
This set screw features precision 1/4"-20 UNC coarse threads with Class 3A thread fit for superior engagement. Manufacturing complies with ASME B18.3 specifications for dimensional accuracy and performance. The product is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting international environmental regulations for hazardous substance restrictions.
