S-94105A354 1/4"-20 x 1 3/4" 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
- Maximum holding power with Class 3A thread fit ensuring tight, secure fastening in demanding applications
- Superior corrosion resistance from black-oxide coating protecting against rust and extending service life
- High-strength durability with Rockwell C45 hardness alloy steel resisting deformation under heavy loads
- Easy installation and removal using the 1/8" hex socket drive for reliable torque transmission without stripping
- Optimized for coarse-thread applications with UNC 1/4"-20 threads providing quick assembly and vibration resistance
- Space-saving headless design allowing flush mounting where protruding fasteners are impractical
- Regulatory compliance assurance meeting ASME B18.3, RoHS 3, and REACH standards for quality and environmental safety
Professional Applications & Engineering Value
This black-oxide alloy steel set screw delivers exceptional performance in industrial machinery, power transmission systems, and precision equipment where reliable component positioning is critical. The hex socket headless design eliminates protrusion issues while the UNC coarse threads with Class 3A fit maintain clamping force under vibration and dynamic loads. The Rockwell C45 hardness provides the necessary strength to prevent thread deformation, ensuring repeated use without performance degradation. The flat tip creates maximum surface contact for superior grip on shafts, collars, and gears, solving common slippage problems in high-torque applications while the black-oxide surface treatment adds corrosion protection for extended service in challenging environments.
Specification Summary & Compliance
Manufactured to ASME B18.3 specifications with UNC 1/4"-20 coarse threads maintaining Class 3A thread fit for precision tolerance. The screw features 1-3/4" length with 1/8" hex drive and flat tip configuration. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations ensures safe usage across regulated industries.
