S-91273A652 3/8"-24 Shoulder Screws

Shoulder Screws

0544FA00393 Shoulder Screws
0544FA00393 Shoulder Screws

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

Part No.
Part No. 0544FA00393
Equivalent to mcmaster :
91273A652

Basic Information

System of Measurement Inch

Head Parameters

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

Dimensions

Shoulder Diameter 3/8"
Shoulder Diameter Tolerance -0.004" to -0.002"
Shoulder Fit Standard
Shoulder Length 1"
Shoulder Length Tolerance -0.005" to 0.005"

Thread Parameters

Thread Type UNF
Thread Size 3/8"-24
Thread Diameter 0.375"
Thread Spacing Fine
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 18-8 Stainless Steel
Finish Black Oxide
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

  • Superior corrosion resistance with 18-8 stainless steel construction and black oxide finish, ideal for harsh industrial environments
  • High mechanical strength with 70,000 psi tensile and 35,000 psi shear strength for demanding applications
  • Precise thread engagement with Class 2A thread fit ensuring reliable fastening and vibration resistance
  • Enhanced grip and torque application through knurled socket head with hex drive design
  • Accurate shoulder positioning with controlled diameter and length tolerances for consistent assembly alignment
  • Fine thread spacing providing better load distribution and reduced loosening under dynamic loads
  • Compliance with environmental regulations including RoHS 3 and REACH for global market acceptance

Professional Applications & Engineering Value

This 18-8 stainless steel shoulder screw with black oxide finish delivers exceptional performance in precision machinery, automation systems, and heavy-duty equipment. The 3/8"-24 UNF fine thread with Class 2A fit ensures secure fastening in high-vibration environments, while the knurled socket head allows for efficient torque transmission during installation. The precisely machined shoulder diameter and length provide stable bearing surfaces for rotating components, reducing wear and maintaining alignment in assemblies. With 70,000 psi tensile strength and corrosion-resistant properties, it solves critical challenges in manufacturing, automotive, and aerospace applications where reliability and durability are paramount.

Specification Summary & Compliance

This shoulder screw features Class 2A thread fit per UNF standards with precise shoulder diameter tolerance of -0.004" to -0.002" and shoulder length tolerance of -0.005" to 0.005". Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material traceability. The component maintains Rockwell B55 hardness and meets specified mechanical properties for industrial applications requiring consistent performance and regulatory compliance.

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