S-91259A103 10-24 ASME B18.3, ASTM A574 Shoulder Screws

Shoulder Screws

0536FA00003 Shoulder Screws
0536FA00003 Shoulder Screws

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

Part No.
Part No. 0536FA00003
Equivalent to mcmaster :
91259A103

Basic Information

System of Measurement Inch

Head Parameters

Head Type Socket
Head Diameter 3/8"
Head Height 3/16"
Head Texture Knurled
Socket Head Profile Standard

Dimensions

Shoulder Diameter 1/4"
Shoulder Diameter Tolerance -0.004" to -0.002"
Shoulder Fit Standard
Shoulder Length 2"
Shoulder Length Tolerance -0.005" to 0.005"

Thread Parameters

Thread Type UNC
Thread Size 10-24
Thread Diameter 0.19"
Thread Spacing Coarse
Thread Length 3/8"
Thread Direction Right Hand
Thread Fit Class 3A

Tip & Drive Parameters

Drive Style Hex
Drive Size 1/8"

Material & Strength

Material Alloy Steel
Finish Black Oxide
Hardness Rockwell C32
Tensile Strength 140000 psi
Minimum Shear Strength 84000 psi

Temperature & Environment

REACH Compliant
RoHS Compliant
Specifications Met ASME B18.3, ASTM A574
Technical Drawings No drawings available at the moment, will be launched soon
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Key Features & Benefits at a Glance

  • Exceptional load-bearing capacity with 140,000 psi tensile strength and 84,000 psi shear strength for reliable performance in demanding applications.
  • Superior wear and corrosion resistance from the black oxide finish, extending service life in harsh industrial environments.
  • Precise alignment and secure positioning ensured by the 2" shoulder with standard fit and tight diameter tolerance.
  • High-strength alloy steel construction with Rockwell C32 hardness for excellent durability and resistance to deformation.
  • Secure, non-slip installation provided by the knurled socket head and 1/8" hex drive, preventing tool slippage.
  • Reliable thread engagement with Class 3A fit and coarse UNC threads for quick assembly and vibration resistance.
  • Broad industry compliance meeting ASME B18.3, ASTM A574, RoHS 3, and REACH standards for quality and safety assurance.

Professional Applications & Engineering Value

This 10-24 UNC shoulder screw is engineered to address critical alignment and high-stress challenges in industrial assemblies. The alloy steel core, hardened to Rockwell C32, provides the structural integrity needed for heavy-duty applications like machinery, automotive components, and precision equipment. The 2" shoulder length with controlled tolerances ensures accurate part positioning, eliminating misalignment issues that can lead to premature wear. The black oxide finish enhances corrosion resistance, making it suitable for environments exposed to moisture or chemicals. Combined with the knurled socket head and Class 3A thread fit, this screw delivers secure, vibration-resistant fastening that maintains integrity under dynamic loads, reducing maintenance needs and improving operational reliability.

Specification Summary & Compliance

This shoulder screw features precise dimensional control, including a Class 3A thread fit for superior engagement and a shoulder diameter tolerance of -0.004" to -0.002". It adheres to ASME B18.3 and ASTM A574 manufacturing specifications, ensuring consistent quality. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for use in regulated industries without hazardous substances.

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