S-91381A385 1/2"-20 x 1" 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 for extended service life in harsh industrial environments
- Precise thread engagement with Class 3A fit ensuring reliable, vibration-resistant fastening in critical applications
- Enhanced surface protection through brass soft tip that prevents galling and damage to mating components
- Exceptional durability from Rockwell C28 hardened alloy steel maintaining performance under heavy loads
- Secure installation with 1/4" hex drive providing positive torque control in confined spaces
- Fine thread advantage with 1/2"-20 UNF offering superior adjustment precision and holding power
- Regulatory compliance meeting ASME B18.3 standards for dimensional accuracy and quality assurance
Professional Applications & Engineering Value
This black-oxide alloy steel set screw delivers exceptional engineering value in demanding industrial applications where vibration resistance and corrosion protection are critical. The Class 3A thread fit with 1/2"-20 UNF fine threads ensures maximum engagement strength in precision machinery, automotive components, and manufacturing equipment. The innovative brass soft tip design prevents surface damage to shafts and rotating elements while providing superior clamping force. Engineered with Rockwell C28 hardness, this headless set screw maintains structural integrity under continuous stress, making it ideal for permanent fastening solutions in aerospace, robotics, and heavy equipment where reliability cannot be compromised.
Specification Summary & Compliance
This precision fastener features 1/2"-20 UNF fine threads with Class 3A fit for superior dimensional accuracy and thread engagement. Manufactured to ASME B18.3 specifications for consistent quality and performance. The product is fully compliant with RoHS 3 (2015/863/EU) environmental directives and REACH (EC 1907/2006) regulations, ensuring safe use in global markets. The black-oxide alloy steel construction with Rockwell C28 hardness provides optimal strength-to-weight ratio for demanding industrial applications.
