S-94496A270 3/8"-16 Shoulder Screws

Shoulder Screws

0557FA00004 Shoulder Screws
0557FA00004 Shoulder Screws

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

Part No.
Part No. 0557FA00004
Equivalent to mcmaster :
94496A270

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 Steel
Finish Zinc Plated
Hardness Rockwell B80
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 Strength & Durability: With a tensile strength of 70,000 psi and a shear strength of 35,000 psi, this shoulder screw ensures reliable performance in high-stress industrial environments, minimizing the risk of fastener failure.
  • Superior Corrosion Resistance: The zinc plating finish provides a protective barrier against rust and corrosion, extending the service life of the screw in various operating conditions.
  • Precision Shoulder for Accurate Alignment: The 1 1/2" shoulder length with standard fit allows for precise component positioning and acts as a pivot or axle, reducing wear and simplifying assembly.
  • Easy Installation & Removal: Featuring an external hex drive and smooth head, this screw allows for high torque application with standard tools, speeding up assembly and maintenance processes.
  • Wide Compatibility with Coarse Threads: The 3/8"-16 UNC coarse thread with Class 2A fit ensures quick assembly and reliable holding power, reducing cross-threading risks in demanding applications.
  • Regulatory Compliance for Global Use: Compliant with RoHS 3 and REACH regulations, this screw meets international environmental and safety standards, making it suitable for export and sensitive industries.
  • Robust Material Construction: Made from steel with a Rockwell B80 hardness, it offers excellent wear resistance and durability under mechanical loads.

Professional Applications & Engineering Value

This 3/8"-16 UNC shoulder screw is engineered to address critical challenges in industrial assemblies, such as misalignment and component wear. The 1 1/2" shoulder length provides a precise bearing surface, ideal for applications where parts need to rotate or pivot freely, like in machinery, automotive systems, and conveyor equipment. The zinc plated steel construction combats corrosion, ensuring longevity in harsh environments. With its external hex drive and coarse thread, it enables rapid installation and secure fastening, reducing downtime. This screw is a reliable solution for maintaining alignment and load distribution in high-strength applications, from manufacturing fixtures to robotic arms.

Specification Summary & Compliance

This shoulder screw features a Class 2A thread fit for standard tolerance and easy assembly, with a shoulder diameter of 1/2" and length of 1 1/2" within specified tolerances. It adheres to UNC thread standards and is manufactured from high-strength steel. The product is compliant with RoHS 3 (2015/863/EU) under exemption 6(a) and REACH (EC 1907/2006), ensuring it meets environmental and safety requirements for industrial use.

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