S-90291A710 1/2"-13 ASME B18.3 Set Screws

Set Screws

0644FA00044 Set Screws
0644FA00044 Set Screws

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

Part No.
Part No. 0644FA00044
Equivalent to mcmaster :
90291A710

Basic Information

System of Measurement Inch

Head Parameters

Head Type Headless

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

Tip & Drive Parameters

Tip Type Soft
Tip Length 0.125"
Tip Diameter 0.25"
Tip Material Nylon 6/6 Plastic
Tip Color Green
Tip Temperature Range -50° to 250° F
Drive Style Hex
Drive Size 1/4"

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
In Stock
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Key Features & Benefits at a Glance

  • Superior vibration resistance with durable nylon 6/6 plastic tip that prevents loosening under dynamic loads
  • Exceptional corrosion resistance through 18-8 stainless steel construction for long service life in harsh environments
  • Precise Class 3A thread fit ensures tight tolerances and reliable fastening in critical applications
  • Easy installation and removal with 1/4" hex drive design that provides excellent torque transmission
  • Surface protection with non-marring nylon tip that prevents damage to mating components
  • Wide temperature compatibility with tip performance maintained from -50° to 250° F
  • Industry-standard compliance meeting ASME B18.3 specifications for guaranteed performance

Professional Applications & Engineering Value

This 1/2"-13 UNC Class 3A set screw delivers exceptional engineering value in demanding industrial applications where vibration resistance and component protection are critical. The 18-8 stainless steel construction provides excellent corrosion resistance for harsh environments, while the green nylon 6/6 plastic tip offers superior vibration dampening without damaging sensitive surfaces. The coarse UNC thread pattern combined with Class 3A fit ensures rapid installation and secure fastening in machinery, automotive components, and precision equipment. The headless design with hex drive allows for flush mounting in confined spaces while maintaining high torque capability. These set screws are engineered to solve common industrial challenges including component slippage, surface marring, and corrosion-induced failure.

Specification Summary & Compliance

This set screw features precise Class 3A thread fit with 1/2"-13 UNC coarse threads and 0.5" thread diameter. Manufactured to ASME B18.3 standards with Rockwell B80 hardness for consistent performance. 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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