S-95868A257 4-40 x 5/16" Plastic Socket Head Screws

Plastic Socket Head Screws

0021FA00149 Plastic Socket Head Screws
0021FA00149 Plastic Socket Head Screws

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

Part No.
Part No. 0021FA00149
Equivalent to mcmaster :
95868A257

Basic Information

System of Measurement Inch

Head Parameters

Head Type Socket
Head Diameter 0.183"
Head Height 0.112"
Socket Head Profile Standard

Dimensions

Length 5/16"

Thread Parameters

Thread Type UNC
Thread Size 4-40
Thread Diameter 0.112"
Thread Spacing Coarse
Thread Direction Right Hand
Thread Fit Class 2A
Threading Fully Threaded

Tip & Drive Parameters

Drive Style Hex
Drive Size 3/32"

Material & Strength

Material Nylon Plastic
Hardness Not Rated

Temperature & Environment

Temperature Range -40° to 140° F
RoHS Compliant
Technical Drawings No drawings available at the moment, will be launched soon
In Stock
Price available upon request. Our sales team will respond within 24 hours with a competitive quote tailored to your requirements.
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Key Features & Benefits at a Glance

  • Corrosion-resistant nylon plastic construction eliminates rust and chemical degradation in harsh environments
  • Precise 3/32" hex drive socket delivers superior torque transmission and prevents tool slippage
  • Class 2A thread fit with UNC coarse threading ensures reliable engagement and faster assembly in industrial applications
  • Wide operating temperature range (-40° to 140°F) maintains performance stability across diverse conditions
  • RoHS 3 compliance meets stringent environmental regulations for global manufacturing
  • Fully threaded 5/16" length design provides consistent clamping force across the entire fastener
  • Right-hand coarse threading enables quick installation and removal in standard applications

Professional Applications & Engineering Value

Engineered for demanding industrial environments, these nylon plastic socket head cap screws solve critical corrosion and electrical isolation challenges where metal fasteners fail. The 4-40 UNC coarse thread configuration with Class 2A fit ensures precise mating with standard components while the 3/32" hex drive delivers maximum torque efficiency without stripping. Ideal for electrical enclosures, marine equipment, food processing machinery, and chemical handling systems, these RoHS compliant fasteners provide reliable performance across the -40° to 140°F temperature range while maintaining dimensional stability and electrical insulation properties.

Specification Summary & Compliance

Manufactured to inch system standards with Class 2A thread fit and UNC coarse threading specifications. The 4-40 thread size with 0.112" thread diameter and 5/16" length maintains precise dimensional accuracy. Fully compliant with RoHS 3 (2015/863/EU) environmental regulations, ensuring safe use in global industrial applications. Standard right-hand thread direction and fully threaded design provide consistent fastening performance across assembly operations.

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