S-91418A542 1/4"-20 x 1" 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 environments
- Exceptional hardness and durability from Rockwell C45 hardened alloy steel, preventing deformation under high stress
- Reliable coarse UNC threading with Class 2A fit for quick assembly and vibration resistance in industrial applications
- Secure square head design with external square drive for maximum torque transmission and slip-free installation
- Precision extended tip with tight diameter tolerance for accurate positioning and enhanced grip on mating components
- Full regulatory compliance with ASTM F912, RoHS 3, and REACH standards for safe, quality-assured industrial use
- Versatile 1" length suitable for various clamping and fastening depths in machinery and equipment assemblies
Professional Applications & Engineering Value
This black-oxide alloy steel set screw delivers critical engineering solutions for industrial applications where vibration loosening and corrosion are primary concerns. The extended tip design ensures positive seating in shafts, pulleys, and collars, preventing component slippage in high-torque environments. Manufactured with Rockwell C45 hardness and Class 2A UNC coarse threads, it maintains clamping force under dynamic loads while allowing rapid installation in production lines. The black-oxide surface treatment provides an additional layer of protection against rust and chemical exposure, making it ideal for automotive, agricultural machinery, and manufacturing equipment where durability and reliability are paramount.
Specification Summary & Compliance
This fastener maintains precision Class 2A thread fit with 1/4"-20 UNC coarse threads and dimensional tolerances including tip diameter (-0.007" to 0") and tip length (-0.005" to 0.005"). Manufacturing adheres to ASTM F912 specifications with full compliance to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring material safety and performance consistency for industrial applications.
