S-95446A657 5/16"-18 Shoulder Screws

Shoulder Screws

0579FA00045 Shoulder Screws
0579FA00045 Shoulder Screws

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

Part No.
Part No. 0579FA00045
Equivalent to mcmaster :
95446A657

Basic Information

System of Measurement Inch

Head Parameters

Head Type Socket
Head Diameter 9/16"
Head Height 1/4"
Head Texture Smooth
Socket Head Profile Standard

Dimensions

Shoulder Diameter 3/8"
Shoulder Diameter Tolerance -0.002" to 0"
Shoulder Fit Precise
Shoulder Length 1"
Shoulder Length Tolerance 0" to 0.003"

Thread Parameters

Thread Type UNC
Thread Size 5/16"-18
Thread Diameter 0.313"
Thread Spacing Coarse
Thread Length 1/2"
Thread Direction Right Hand
Thread Fit Class 2A

Tip & Drive Parameters

Drive Style Hex
Drive Size 3/16"

Material & Strength

Material 360 Brass
Hardness Rockwell B55
Tensile Strength 40000 psi
Minimum Shear Strength 22000 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

  • Superior corrosion resistance with 360 Brass construction, ideal for harsh or humid industrial environments.
  • Precise alignment and smooth rotation ensured by the 1" precision shoulder with minimal diameter tolerance.
  • High mechanical strength offering 40,000 psi tensile and 22,000 psi shear strength for reliable load-bearing applications.
  • Easy installation and removal with a 3/16" hex socket drive, reducing assembly time and tool wear.
  • Durable thread engagement from the 5/16"-18 UNC coarse thread design, resistant to vibration loosening.
  • Consistent performance backed by Class 2A thread fit and Rockwell B55 hardness for long-term reliability.
  • Environmental compliance meeting RoHS 3 and REACH standards, safe for regulated industries.

Professional Applications & Engineering Value

This 360 Brass Shoulder Screw is engineered to address critical alignment and durability challenges in precision assemblies. The 1" shoulder length with tight tolerances provides a stable pivot or spacer, minimizing wear in rotating parts like bearings, linkages, and gears. The UNC coarse thread ensures quick assembly and strong holding power in industrial machinery, while the hex drive allows for high-torque installation without slippage. Made from brass, it resists galvanic corrosion and is non-magnetic, making it ideal for electrical equipment and marine applications. Its 40,000 psi tensile strength supports demanding mechanical loads, reducing failure risks in automated systems.

Specification Summary & Compliance

This shoulder screw adheres to UNC thread standards with a Class 2A fit for consistent threading. Dimensions include a 5/16"-18 thread, 1/2" thread length, and a shoulder diameter of 3/8" with precise tolerances. It meets RoHS 3 (2015/863/EU) with exemption 6(c) and is REACH (EC 1907/2006) compliant, ensuring environmental safety in industrial use.

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