S-94355A709 1/4"-20 x 1 1/4" 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 holding power with Class 3A thread fit for reliable, vibration-resistant fastening in demanding applications
- Exceptional corrosion resistance from 18-8 stainless steel construction, ideal for harsh industrial environments
- Maximum torque transmission through hex drive design, preventing tool slippage and ensuring secure installation
- Enhanced durability with Rockwell B80 hardness, maintaining structural integrity under heavy loads
- Precise alignment with flat tip design, providing consistent surface contact and preventing component damage
- Industry-standard compliance with ASME B18.3 specifications, guaranteeing dimensional accuracy and performance reliability
- Environmental responsibility through RoHS 3 and REACH compliance, meeting global regulatory requirements
Professional Applications & Engineering Value
This 1/4"-20 UNC Class 3A set screw delivers critical engineering solutions for industrial applications requiring permanent, high-strength fastening. The 18-8 stainless steel construction provides excellent corrosion resistance in manufacturing, automotive, and machinery applications where environmental exposure is a concern. The hex drive design enables high-torque installation without cam-out, while the Class 3A thread fit ensures precise engagement with mating components for vibration-resistant performance. The coarse UNC thread facilitates quick assembly in production environments, and the headless configuration allows for flush mounting in space-constrained applications. These set screws are engineered to maintain positional accuracy in shafts, collars, and pulleys under continuous operational stress.
Specification Summary & Compliance
This set screw features 1/4"-20 UNC coarse threads with Class 3A fit for precise dimensional accuracy, 1-1/4" length, and 1/8" hex drive size. Manufactured to ASME B18.3 standards with Rockwell B80 hardness and flat tip configuration. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across global industrial markets.
