S-91418A843 3/4"-10 x 2" ASTM F912 Set Screws

Set Screws

0662FA00025 Set Screws
0662FA00025 Set Screws

Image may differ from product. See technical specification for details.

Part No.
Part No. 0662FA00025
Equivalent to mcmaster :
91418A843

Basic Information

System of Measurement Inch

Head Parameters

Head Type Square
Head Width 3/4"
Head Height 9/16"

Dimensions

Length 2"

Thread Parameters

Thread Type UNC
Thread Size 3/4"-10
Thread Diameter 0.75"
Thread Spacing Coarse
Thread Direction Right Hand
Thread Fit Class 2A

Tip & Drive Parameters

Tip Type Extended
Tip Length 0.188"
Tip Length Tolerance -0.005" to 0.005"
Tip Diameter 0.563"
Tip Diameter Tolerance -0.013" to 0"
Drive Style External Square

Material & Strength

Material Black-Oxide Alloy Steel
Hardness Rockwell C45

Temperature & Environment

REACH Compliant
RoHS Compliant
Specifications Met ASTM F912
Technical Drawings No drawings available at the moment, will be launched soon
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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 mechanical strength from Rockwell C45 hardened alloy steel, preventing deformation under high torque loads
  • Precision extended tip design ensures optimal contact and secure fastening with minimal surface damage
  • Reliable coarse UNC threading provides faster installation and superior vibration resistance compared to fine threads
  • Square head/external drive compatibility enables high-torque application with standard industrial tools
  • Consistent Class 2A thread fit guarantees interchangeability and reduces assembly time in production environments
  • Regulatory compliance assurance meets ASTM F912, RoHS 3, and REACH standards for global industrial applications

Professional Applications & Engineering Value

This black-oxide alloy steel set screw delivers critical performance advantages for heavy-duty industrial applications where vibration resistance and long-term reliability are paramount. The 3/4"-10 UNC coarse thread configuration ensures rapid installation in production environments while maintaining secure fastening under dynamic loads. The extended tip design with precise dimensional tolerances provides concentrated contact pressure, preventing component slippage in machinery, automotive, and construction equipment. The Rockwell C45 hardness combined with the corrosion-resistant black-oxide finish creates a durable fastening solution that withstands harsh operating conditions, reducing maintenance frequency and replacement costs in industrial assemblies requiring set screws with exceptional mechanical properties.

Specification Summary & Compliance

Manufactured to exacting Class 2A thread fit tolerances with UNC coarse threading (3/4"-10) in right-hand direction. The extended tip maintains tight dimensional control with tip length tolerance of -0.005" to 0.005" and tip diameter tolerance of -0.013" to 0". Full compliance with ASTM F912 manufacturing specifications, RoHS 3 (2015/863/EU) environmental directives, and REACH (EC 1907/2006) chemical safety regulations ensures global acceptability for industrial applications.

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