S-91273A193 5/16"-24 Shoulder Screws

Shoulder Screws

0544FA00064 Shoulder Screws
0544FA00064 Shoulder Screws

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

Part No.
Part No. 0544FA00064
Equivalent to mcmaster :
91273A193

Basic Information

System of Measurement Inch

Head Parameters

Head Type Socket
Head Diameter 7/16"
Head Height 7/32"
Head Texture Knurled
Socket Head Profile Standard

Dimensions

Shoulder Diameter 5/16"
Shoulder Diameter Tolerance -0.004" to -0.002"
Shoulder Fit Standard
Shoulder Length 5/8"
Shoulder Length Tolerance -0.005" to 0.005"

Thread Parameters

Thread Type UNF
Thread Size 5/16"-24
Thread Diameter 0.313"
Thread Spacing Fine
Thread Length 7/16"
Thread Direction Right Hand
Thread Fit Class 2A

Tip & Drive Parameters

Drive Style Hex
Drive Size 5/32"

Material & Strength

Material 18-8 Stainless Steel
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, ideal for harsh environments and extended service life.
  • High mechanical strength and reliability with 70,000 psi tensile strength and 35,000 psi shear strength for demanding applications.
  • Precise alignment and smooth rotation ensured by the Class 2A thread fit and standard shoulder fit, reducing wear and assembly errors.
  • Secure, non-slip installation thanks to the knurled head and 5/32" hex socket drive, allowing for high torque application.
  • Excellent durability and hardness with Rockwell B55 rating, maintaining performance under repetitive stress.
  • Fine UNF thread design (5/16"-24) provides superior holding power and vibration resistance in precision assemblies.
  • Compliance with environmental standards including RoHS 3 and REACH, ensuring safe and sustainable use in global markets.

Professional Applications & Engineering Value

This 18-8 stainless steel shoulder screw is engineered to address critical challenges in high-precision machinery, such as misalignment and component wear. The 5/16"-24 UNF fine thread and 7/16" shoulder length provide a secure, stable fit in applications like rotating shafts, pulleys, and linkages, where exact positioning is vital. The knurled head and hex socket drive facilitate easy installation in tight spaces, while the Class 2A thread fit ensures consistent performance in automated systems. Its corrosion-resistant material and high tensile strength make it ideal for industries like automotive, aerospace, and industrial equipment, reducing maintenance needs and enhancing operational reliability.

Specification Summary & Compliance

This shoulder screw adheres to Class 2A thread fit and UNF thread standards, with precise shoulder diameter and length tolerances (e.g., shoulder diameter: -0.004" to -0.002"). It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring environmental safety. Manufactured to deliver consistent performance in alignment and load-bearing applications, it supports engineering specifications for durability and precision.

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