S-94105A106 4-40 x 1/4" 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 for extended service life in harsh industrial environments
- Precise Class 3A thread fit ensures tighter tolerances and more reliable fastening than standard Class 2A threads
- High-strength Rockwell C45 hardness provides exceptional durability and resistance to wear under heavy loads
- Secure hex drive design with 0.050" drive size prevents cam-out and enables high torque application
- Flat tip configuration creates maximum surface contact for superior holding power in positioning applications
- Headless design allows for flush mounting in confined spaces and rotating machinery components
- Full regulatory compliance with ASME B18.3, RoHS 3, and REACH ensures safety and environmental standards are met
Professional Applications & Engineering Value
This black-oxide alloy steel set screw delivers exceptional engineering value in demanding industrial applications where corrosion resistance and precise positioning are critical. The 4-40 UNC coarse thread with Class 3A fit provides superior engagement in softer materials while maintaining dimensional stability. The hex drive design ensures reliable installation without stripping, making it ideal for precision machinery, automated equipment, and electronic enclosures where vibration resistance is essential. The combination of Rockwell C45 hardness and black-oxide surface treatment creates a durable fastening solution that withstands environmental challenges while maintaining consistent performance in right-hand thread applications requiring repeated adjustments.
Specification Summary & Compliance
This set screw features 4-40 UNC coarse threads with Class 3A precision fit for superior dimensional accuracy. Manufacturing complies with ASME B18.3 specifications (ASTM F912) ensuring consistent quality and performance. The product meets RoHS 3 (2015/863/EU) compliance for restricted substances and REACH (EC 1907/2006) certification for chemical safety. Additional specifications include 1/4" length, 0.050" hex drive, and flat tip design for optimal mechanical performance in industrial fastening applications.
