S-94495A331 1/2"-13 x 1/2" ASME B18.3, ASTM F912 Set Screws

Set Screws

0643FA00034 Set Screws
0643FA00034 Set Screws

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

Part No.
Part No. 0643FA00034
Equivalent to mcmaster :
94495A331

Basic Information

System of Measurement Inch

Head Parameters

Head Type Headless

Dimensions

Length 1/2"

Thread Parameters

Thread Type UNC
Thread Size 1/2"-13
Thread Diameter 0.5"
Thread Spacing Coarse
Thread Direction Right Hand
Thread Fit Class 3A
Locking Type Thread Locker
Thread Locker Type Nylon Patch
Thread Locker Temperature Range -50° to 250° F

Tip & Drive Parameters

Tip Type Flat
Drive Style Hex
Drive Size 1/4"

Material & Strength

Material Black-Oxide Alloy Steel
Hardness Rockwell C45

Temperature & Environment

REACH Compliant
RoHS Compliant
Specifications Met ASME B18.3, ASTM F912
Technical Drawings No drawings available at the moment, will be launched soon
In Stock
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Key Features & Benefits at a Glance

  • Superior vibration resistance with nylon patch thread locker that maintains secure fastening in dynamic applications
  • Exceptional durability from black-oxide alloy steel construction providing corrosion resistance and extended service life
  • Precise thread engagement with Class 3A fit ensuring reliable performance in demanding industrial environments
  • High-temperature capability with thread locker effective from -50° to 250°F for stable performance across varying conditions
  • Optimized installation efficiency through hex drive design allowing high torque application without head interference
  • Enhanced material strength with Rockwell C45 hardness providing excellent resistance to wear and deformation
  • Broad compatibility with UNC coarse thread pattern ensuring easy integration with standard industrial components

Professional Applications & Engineering Value

This black-oxide alloy steel set screw delivers critical engineering solutions for industrial applications where vibration resistance and positional security are paramount. The nylon patch thread locker embedded in the UNC threads creates permanent locking action that prevents loosening under continuous stress, making it ideal for machinery, automotive assemblies, and precision equipment. The headless design with hex drive enables flush mounting in confined spaces while accommodating high installation torque. With coarse thread spacing and Class 3A thread fit, this component ensures rapid assembly and reliable performance in heavy-duty applications, solving common challenges of component slippage and maintenance-intensive fastening systems.

Specification Summary & Compliance

Manufactured to ASME B18.3 specifications with Class 3A thread fit precision and UNC 1/2"-13 coarse threading. The set screw features Rockwell C45 hardness and meets comprehensive regulatory requirements including RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant standards, ensuring environmental responsibility and workplace safety compliance.

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