S-94105A547 1/4"-20 x 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, extending service life in demanding industrial environments
- Exceptional thread precision with Class 3A fit for secure, vibration-resistant fastening in critical assemblies
- High-strength durability from Rockwell C45 hardened alloy steel, preventing deformation under heavy loads
- Optimized installation control through 1/8" hex drive design, allowing high-torque application without stripping
- Secure component positioning with flat tip design that distributes clamping force evenly without surface damage
- Reliable coarse threading (UNC 1/4"-20) for faster installation and reduced cross-threading risks
- Full regulatory compliance meeting ASME B18.3, RoHS 3, and REACH standards for global industrial applications
Professional Applications & Engineering Value
This black-oxide alloy steel set screw delivers critical performance where vibration resistance and positional security are paramount. The Class 3A thread fit ensures precise engagement with mating components, eliminating play in machinery assemblies, power transmission systems, and precision equipment. The Rockwell C45 hardness rating provides exceptional shear strength while the coarse UNC threading enables rapid installation in production environments. The hex drive configuration accommodates high torque applications without cam-out, making it ideal for permanent fastening in automotive, aerospace, and heavy machinery where headless design maintains clearance in confined spaces. The corrosion-resistant black-oxide surface treatment extends service life in humid or chemically aggressive operating conditions.
Specification Summary & Compliance
Manufactured to ASME B18.3 specifications with Class 3A thread tolerance for precision fit. Features 1/4"-20 UNC coarse threads with right-hand direction and 2" length. The flat tip provides maximum contact surface while the 1/8" hex drive ensures secure tool engagement. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations for global industrial use.
