S-95862A542 1/4"-20 x 1 3/32" Set Screws

Set Screws

0639FA00020 Set Screws
0639FA00020 Set Screws

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

Part No.
Part No. 0639FA00020
Equivalent to mcmaster :
95862A542

Basic Information

Color Off-White
System of Measurement Inch

Head Parameters

Head Type Headless

Dimensions

Length 1 3/32"

Thread Parameters

Thread Type UNC
Thread Size 1/4"-20
Thread Diameter 0.25"
Thread Spacing Coarse
Thread Direction Right Hand
Thread Fit Class 2A

Tip & Drive Parameters

Tip Type Flat
Drive Style Slotted

Material & Strength

Material Nylon Plastic
Hardness Not Rated

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

  • Non-conductive and corrosion-resistant nylon construction prevents electrical interference and eliminates rust in sensitive environments
  • Precise Class 2A thread fit ensures reliable engagement and consistent clamping force in assembly applications
  • Wide temperature tolerance (-40° to 185°F) maintains performance in both freezing and elevated temperature conditions
  • Slotted headless design with flat tip provides flush mounting and secure positioning without protruding hardware
  • RoHS 3 compliance meets international environmental standards for hazardous substance restrictions
  • Coarse UNC 1/4"-20 threading enables rapid installation and superior resistance to vibration loosening
  • Lightweight plastic construction reduces component weight while providing excellent chemical resistance

Professional Applications & Engineering Value

Engineered for precision fastening in industrial applications, this nylon plastic set screw solves critical challenges in electrical assemblies, food processing equipment, and chemical environments where metal fasteners would cause galvanic corrosion or contamination. The headless slotted design with flat tip creates seamless surfaces in rotating components and adjustment mechanisms, while the Class 2A thread fit maintains dimensional accuracy across repeated installations. The UNC coarse thread pattern provides superior vibration resistance in machinery, and the temperature-resistant nylon material ensures reliable performance from freezer applications to heated industrial equipment. These RoHS compliant set screws are particularly valuable in electronics, medical devices, and packaging machinery where non-conductive, non-magnetic properties are essential.

Specification Summary & Compliance

This 1/4"-20 UNC set screw features precise Class 2A thread fit tolerances with coarse thread spacing and right-hand thread direction. The fastener measures 1 3/32" in length with 0.25" thread diameter and flat tip configuration. Manufactured from off-white nylon plastic, the screw complies with RoHS 3 (2015/863/EU) environmental regulations and is suitable for applications requiring temperature resistance from -40° to 185°F.

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