S-93897A480 1/4"-20 Shoulder Screws

Shoulder Screws

0548FA00019 Shoulder Screws
0548FA00019 Shoulder Screws

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

Part No.
Part No. 0548FA00019
Equivalent to mcmaster :
93897A480

Basic Information

System of Measurement Inch

Head Parameters

Head Type Socket
Head Diameter 7/16"
Head Height 7/32"
Head Texture Smooth
Socket Head Profile Standard

Dimensions

Shoulder Diameter 5/16"
Shoulder Diameter Tolerance -0.012" to -0.002"
Shoulder Fit Standard
Shoulder Length 2"
Shoulder Length Tolerance -0.015" to 0.015"

Thread Parameters

Thread Type UNC
Thread Size 1/4"-20
Thread Diameter 0.25"
Thread Spacing Coarse
Thread Length 7/16"
Thread Direction Right Hand
Thread Fit Class 2A

Tip & Drive Parameters

Drive Style Hex
Drive Size 5/32"

Material & Strength

Material Nylon 6/6 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

  • Corrosion-resistant Nylon 6/6 construction eliminates rust and galvanic corrosion in sensitive environments, ensuring long-term reliability without metallic contamination.
  • Precise 2" shoulder length with tight tolerances provides accurate component alignment and spacing, reducing assembly time and improving mechanical stability.
  • 1/4"-20 UNC coarse thread with Class 2A fit enables quick installation and secure fastening in plastic and soft materials while maintaining consistent engagement.
  • Hex socket drive design allows for high-torque application with standard tools, preventing cam-out and ensuring flush mounting in confined spaces.
  • Wide temperature resistance (-40° to 185°F) maintains structural integrity and performance across diverse operating conditions from industrial freezers to heated assemblies.
  • Smooth head texture and standard socket profile prevents surface damage to mating components while offering clean aesthetic integration.
  • Full RoHS 3 compliance meets stringent international environmental regulations for electronics and consumer product applications.

Professional Applications & Engineering Value

This Nylon 6/6 plastic shoulder screw delivers critical engineering advantages where electrical insulation, chemical resistance, and weight reduction are paramount. The 2" shoulder length with controlled diameter tolerance acts as a precision pivot or spacer in machinery, eliminating the need for additional bushings. The 1/4"-20 UNC coarse thread with Class 2A fit ensures reliable engagement in plastic housings and soft materials without stripping. Commonly deployed in electrical enclosures, conveyor systems, and food processing equipment, its non-conductive properties prevent short circuits while the smooth head texture protects sensitive surfaces. The hex socket drive accommodates high assembly torque while maintaining a low-profile installation.

Specification Summary & Compliance

Manufactured to inch system standards with Class 2A thread fit and UNC coarse thread profile. Shoulder diameter tolerance: -0.012" to -0.002", shoulder length tolerance: -0.015" to 0.015". Fully compliant with RoHS 3 (2015/863/EU) regulations, containing no restricted hazardous substances. Temperature operating range: -40° to 185°F. Drive size: 5/32" hex, thread length: 7/16".

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