S-94115A240 10-24 x 3/8" ASME B18.3 Set Screws

Set Screws

0646FA00021 Set Screws
0646FA00021 Set Screws

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

Part No.
Part No. 0646FA00021
Equivalent to mcmaster :
94115A240

Basic Information

System of Measurement Inch

Head Parameters

Head Type Headless

Dimensions

Length 3/8"

Thread Parameters

Thread Type UNC
Thread Size 10-24
Thread Diameter 0.19"
Thread Spacing Coarse
Thread Direction Right Hand
Thread Fit Class 3A

Tip & Drive Parameters

Tip Type Soft
Tip Length 0.047"
Tip Diameter 0.094"
Tip Material Nylon 6/6 Plastic
Tip Color Green
Tip Temperature Range -50° to 250° F
Drive Style Hex
Drive Size 3/32"

Material & Strength

Material Black-Oxide Alloy Steel
Hardness Rockwell C28

Temperature & Environment

REACH Compliant
RoHS Compliant
Specifications Met ASME B18.3
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 on alloy steel for extended service life in harsh environments
  • Precise Class 3A thread fit ensures tighter tolerances and more reliable fastening in critical assemblies
  • Non-marring nylon 6/6 tip protects sensitive surfaces while maintaining secure positioning
  • Wide temperature tolerance (-50° to 250°F) allows consistent performance across diverse operating conditions
  • High-strength construction with Rockwell C28 hardness provides excellent resistance to vibration loosening
  • Compact headless design with 3/32" hex drive enables installation in confined spaces
  • Industry compliance meets ASME B18.3 specifications and environmental regulations (RoHS 3 & REACH)

Professional Applications & Engineering Value

This 10-24 UNC set screw delivers exceptional engineering value for precision industrial applications where vibration resistance and surface protection are critical. The black-oxide alloy steel construction combined with Class 3A thread fit ensures maximum holding power in machinery, automotive components, and electronic enclosures. The nylon 6/6 plastic tip prevents damage to shafts, gears, and other precision components while maintaining secure positioning under thermal cycling from -50° to 250°F. The headless hex drive design allows for flush mounting in space-constrained assemblies, making it ideal for set screw applications requiring both reliability and discreet installation. This combination of materials and precision threading solves common challenges of component slippage, surface damage, and thermal degradation in demanding industrial environments.

Specification Summary & Compliance

This set screw features 10-24 UNC coarse threads with precision Class 3A thread fit for superior dimensional accuracy. Manufactured to ASME B18.3 standards with a length of 3/8", thread diameter of 0.19", and 3/32" hex drive. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across global industrial markets.

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