S-91375A742 1/2"-20 x 2 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 corrosion resistance with black-oxide coating that protects against rust and extends service life in harsh industrial environments
- Exceptional thread precision with Class 3A UNF fine threads ensuring tight, secure fastening and vibration resistance in critical assemblies
- High-strength durability from alloy steel construction with Rockwell C45 hardness for reliable performance under heavy loads
- Easy installation and removal with 1/4" hex drive design allowing quick tool engagement in confined spaces
- Secure component positioning thanks to the cup tip design that digs into surfaces without slipping
- Regulatory compliance assurance meeting ASME B18.3 specifications for consistent quality and dimensional accuracy
- Environmental responsibility with RoHS 3 and REACH compliance for safe use across global markets
Professional Applications & Engineering Value
This black-oxide alloy steel set screw delivers critical engineering advantages in industrial applications where vibration resistance and precise component positioning are paramount. The Class 3A UNF fine threads maintain clamping force in high-vibration environments like machinery, automotive systems, and precision equipment. The headless design with 1/4" hex drive enables flush mounting in space-constrained assemblies while the cup tip provides superior grip on shafts and rotating components. Manufactured to ASME B18.3 standards with Rockwell C45 hardness, this fastener ensures reliable performance in demanding applications requiring repeated adjustments and long-term durability.
Specification Summary & Compliance
This set screw features 1/2"-20 UNF Class 3A fine threads with right-hand direction and 2 1/2" length. The manufacturing process adheres to ASME B18.3 specifications (ASTM F912) ensuring dimensional accuracy and consistent performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, meeting international environmental standards for industrial fasteners.
