S-94323A952 3/8"-16 x 1/2" Thumb Screws

Thumb Screws

0789FA00028 Thumb Screws
0789FA00028 Thumb Screws

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

Part No.
Part No. 0789FA00028
Equivalent to mcmaster :
94323A952

Basic Information

System of Measurement Inch

Head Parameters

Head Type Thumb
Thumb Screw Head Shape Round
Round-Head Thumb Screw Profile Raised
Head Diameter 11/16"
Head Height 3/16"
Head Texture Knurled

Dimensions

Length 1/2"
Collar Diameter 35/64"
Collar Height 1/4"

Thread Parameters

Thread Type UNC
Thread Size 3/8"-16
Thread Diameter 0.375"
Thread Spacing Coarse
Thread Direction Right Hand
Thread Fit Class 2A
Threading Fully Threaded

Material & Strength

Material Nylon Plastic
Hardness Not Rated
Tensile Strength 11000 psi

Temperature & Environment

Temperature Range -40° to 185° F
RoHS Compliant
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 hand-tightening grip with knurled texture on the round raised head for secure operation without tools
  • Excellent corrosion and chemical resistance due to durable Nylon Plastic construction, ideal for harsh environments
  • Wide temperature tolerance from -40°F to 185°F, ensuring reliable performance in varied operating conditions
  • High tensile strength of 11,000 psi provides secure fastening for medium-duty industrial applications
  • Easy installation and alignment with coarse UNC 3/8"-16 threads and Class 2A fit for quick assembly
  • Enhanced stability from the integrated collar design, preventing over-tightening and improving load distribution
  • Environmental compliance with RoHS 3 standards, meeting strict regulatory requirements for industrial use

Professional Applications & Engineering Value

This nylon thumb screw is engineered to address common industrial challenges where frequent adjustments, corrosion resistance, and electrical insulation are critical. The knurled round raised head provides exceptional manual grip, reducing installation time and eliminating the need for tools in assembly lines, enclosures, and machinery panels. Made from robust Nylon Plastic, it resists moisture, chemicals, and galvanic corrosion, making it ideal for electronics, marine equipment, and food processing applications. The coarse UNC threading and Class 2A fit ensure quick, secure engagement in tapped holes, while the raised profile and collar enhance stability, preventing loosening under vibration. With a temperature range of -40°F to 185°F and RoHS 3 compliance, it offers reliable, safe fastening for OEM and MRO needs.

Specification Summary & Compliance

This thumb screw features precise UNC 3/8"-16 coarse threads with a Class 2A thread fit for consistent dimensional accuracy and ease of assembly. It is fully threaded with a right-hand thread direction, a head diameter of 11/16", and a length of 1/2". The product complies with RoHS 3 (2015/863/EU) regulations, ensuring it is free from hazardous substances for use in industrial and electronic applications.

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