S-90291A242 10-24 ASME B18.3 Set Screws

Set Screws

0644FA00020 Set Screws
0644FA00020 Set Screws

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

Part No.
Part No. 0644FA00020
Equivalent to mcmaster :
90291A242

Basic Information

System of Measurement Inch

Head Parameters

Head Type Headless

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 18-8 Stainless Steel
Hardness Rockwell B80

Temperature & Environment

REACH Compliant
RoHS Compliant
Specifications Met ASME B18.3

Installation & Application

Long 3/4"
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 18-8 stainless steel construction for long-lasting performance in harsh environments
  • Secure, vibration-resistant locking thanks to the green nylon 6/6 tip that prevents loosening under dynamic loads
  • Precise, reliable thread engagement with Class 3A fit and UNC coarse threads for easy assembly and strong holding power
  • Wide temperature tolerance with nylon tip operating from -50° to 250°F, suitable for diverse industrial conditions
  • High-strength durability backed by Rockwell B80 hardness, ensuring the set screw withstands repeated use
  • Easy installation and removal using a standard 3/32" hex drive, reducing assembly time and tooling costs
  • Compliance with industry standards including ASME B18.3, RoHS 3, and REACH for safe, regulated applications

Professional Applications & Engineering Value

This 10-24 UNC set screw is engineered to address common industrial challenges like component slippage and vibration-induced failure. The 18-8 stainless steel material offers excellent resistance to rust and corrosion, making it ideal for machinery, automotive, and outdoor equipment where exposure to moisture is a concern. The hex headless design allows for flush mounting in tight spaces, while the nylon tip provides a non-marring, secure grip on shafts or collars without damaging surfaces. With coarse thread spacing and Class 3A thread fit, it ensures quick installation and reliable performance in high-stress applications, reducing maintenance needs and improving operational efficiency.

Specification Summary & Compliance

This set screw features precise UNC thread specifications with a Class 3A thread fit for accurate dimensional tolerance. It complies with ASME B18.3 manufacturing standards, ensuring consistent quality and interoperability. Additionally, it is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting environmental and safety regulations for use in various industrial sectors.

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