S-95289A336 1/4"-20 x 1/2" 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 for precise, vibration-resistant fastening in demanding applications
- Enhanced corrosion resistance through Black Oxide surface treatment, extending service life in industrial environments
- Maximum torque transmission with hex drive design preventing cam-out and ensuring secure installation
- Exceptional material strength from alloy steel with Rockwell C45 hardness for reliable performance under heavy loads
- Deep penetration capability with extended tip design providing superior grip and component alignment
- Industry-standard compatibility with UNC coarse threads ensuring easy installation and interchangeability
- Regulatory compliance assurance meeting ASME B18.3 specifications and environmental standards (RoHS 3, REACH)
Professional Applications & Engineering Value
This Black Oxide Alloy Steel set screw delivers critical engineering solutions for industrial applications requiring precision fastening and vibration resistance. The extended tip design (0.134" length) ensures deeper penetration into mating components, providing superior anti-loosening performance in machinery, automotive assemblies, and power transmission systems. The Class 3A thread fit with UNC coarse spacing maintains tight tolerances while facilitating faster installation in production environments. The hex drive compatibility allows for high-torque applications without stripping, while the Rockwell C45 hardness ensures the fastener maintains its structural integrity under repetitive stress and heavy loads, making it ideal for permanent or semi-permanent fastening requirements.
Specification Summary & Compliance
This 1/4"-20 UNC set screw features precision Class 3A thread fit with coarse thread spacing for optimal performance. Manufactured to ASME B18.3 specifications, the fastener ensures dimensional accuracy and interchangeability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, confirming its suitability for global industrial applications while meeting strict material restriction requirements.
