S-94731A430 3/8"-16 Shoulder Screws

Shoulder Screws

0558FA00004 Shoulder Screws
0558FA00004 Shoulder Screws

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

Part No.
Part No. 0558FA00004
Equivalent to mcmaster :
94731A430

Basic Information

System of Measurement Inch

Head Parameters

Head Type Hex
Head Width 3/4"
Head Height 1/4"
Head Texture Smooth

Dimensions

Shoulder Diameter 1/2"
Shoulder Diameter Tolerance -0.004" to 0"
Shoulder Fit Standard
Shoulder Length 1 1/2"
Shoulder Length Tolerance -0.005" to 0.005"

Thread Parameters

Thread Type UNC
Thread Size 3/8"-16
Thread Diameter 0.375"
Thread Spacing Coarse
Thread Length 3/4"
Thread Direction Right Hand
Thread Fit Class 2A

Tip & Drive Parameters

Drive Style External Hex

Material & Strength

Material 18-8 Stainless Steel
Hardness Rockwell B55
Tensile Strength 70000 psi
Minimum Shear Strength 35000 psi

Temperature & Environment

REACH Compliant
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

  • Exceptional corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments
  • High tensile strength of 70,000 PSI ensures reliable performance under heavy loads and vibration
  • Precision Class 2A thread fit provides smooth assembly and consistent clamping force
  • Generous 1-1/2" shoulder length offers superior alignment and bearing surface for rotating components
  • Rockwell B55 hardness delivers excellent wear resistance and durability
  • RoHS 3 and REACH compliance meets strict environmental regulations for global manufacturing
  • External hex drive design enables quick installation with standard tools

Professional Applications & Engineering Value

This 3/8"-16 UNC shoulder screw delivers critical engineering solutions where precision alignment and rotational control are paramount. The 18-8 stainless steel construction provides superior corrosion resistance for demanding environments including food processing, marine applications, and chemical equipment. The 1-1/2" shoulder length with 1/2" diameter creates an ideal bearing surface for gears, pulleys, and linkages, eliminating the need for additional bushings. With 70,000 PSI tensile strength and Class 2A thread fit, these industrial shoulder screws maintain dimensional stability under dynamic loads while ensuring consistent assembly across production runs. The coarse thread spacing and external hex drive further enhance installation efficiency in high-volume manufacturing settings.

Specification Summary & Compliance

Manufactured to precise dimensional standards with Class 2A thread fit and UNC thread form. Shoulder diameter maintains tight tolerance of -0.004" to 0" while shoulder length tolerance is held to ±0.005". Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. The 18-8 stainless steel construction meets industry standards for corrosion resistance and mechanical properties.

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