S-91273A549 10-32 Shoulder Screws

Shoulder Screws

0544FA00321 Shoulder Screws
0544FA00321 Shoulder Screws

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

Part No.
Part No. 0544FA00321
Equivalent to mcmaster :
91273A549

Basic Information

System of Measurement Inch

Head Parameters

Head Type Socket
Head Diameter 5/16"
Head Height 5/32"
Head Texture Knurled
Socket Head Profile Standard

Dimensions

Shoulder Diameter 3/16"
Shoulder Diameter Tolerance -0.004" to -0.002"
Shoulder Fit Standard
Shoulder Length 5/16"
Shoulder Length Tolerance -0.005" to 0.005"

Thread Parameters

Thread Type UNF
Thread Size 10-32
Thread Diameter 0.19"
Thread Spacing Fine
Thread Length 3/16"
Thread Direction Right Hand
Thread Fit Class 2A

Tip & Drive Parameters

Drive Style Hex
Drive Size 3/32"

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-strength performance with 70,000 psi tensile strength and 35,000 psi shear strength, ensuring reliable load-bearing capacity.
  • Precise alignment and smooth rotation due to the standard shoulder fit and knurled head, reducing component wear.
  • Secure and efficient installation using a 3/32" hex drive and socket head, minimizing stripping and providing consistent torque application.
  • Accurate thread engagement with Class 2A thread fit and 10-32 UNF fine thread, preventing loosening under vibration.
  • Enhanced durability from Rockwell B55 hardness, maintaining structural integrity under repeated stress.
  • Compliance with environmental regulations including RoHS 3 and REACH, ensuring safe and sustainable use in global markets.

Professional Applications & Engineering Value

This precision shoulder screw is engineered to address critical challenges in machinery assembly, such as misalignment and component wear. The 18-8 stainless steel material, combined with a black oxide finish, provides excellent resistance to corrosion and oxidation, making it suitable for automotive, aerospace, and manufacturing equipment. The 3/16" shoulder length and standard shoulder fit allow for precise positioning of moving parts, while the 10-32 UNF fine thread ensures secure fastening in high-vibration environments. With a socket head and hex drive, installation is streamlined, reducing downtime in production lines. Ideal for applications requiring high tensile strength and reliable performance, this screw enhances operational efficiency and longevity in demanding industrial settings.

Specification Summary & Compliance

This shoulder screw features a Class 2A thread fit and UNF fine thread with precise dimensions, including a shoulder diameter tolerance of -0.004" to -0.002" and shoulder length tolerance of -0.005" to 0.005". Manufactured to high standards, it complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and suitability for industrial use.

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