S-91273A398 M5 Shoulder Screws

Shoulder Screws

0544FA00216 Shoulder Screws
0544FA00216 Shoulder Screws

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

Part No.
Part No. 0544FA00216
Equivalent to mcmaster :
91273A398

Basic Information

System of Measurement Metric

Head Parameters

Head Type Socket
Head Diameter 9 mm
Head Height 4 mm
Head Texture Knurled
Socket Head Profile Standard

Dimensions

Shoulder Diameter 5 mm
Shoulder Diameter Tolerance -0.04 to -0.01 mm
Shoulder Fit Standard
Shoulder Length 50 mm
Shoulder Length Tolerance 0 to 0.25 mm

Thread Parameters

Thread Type Metric
Thread Size M5
Thread Pitch 0.8 mm
Thread Spacing Coarse
Thread Length 9.5 mm
Thread Direction Right Hand
Thread Fit Class 5g6g

Tip & Drive Parameters

Drive Style Hex
Drive Size 2.5 mm

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 reducing replacement frequency.
  • High mechanical strength offering 70,000 psi tensile and 35,000 psi minimum shear strength for reliable performance under load.
  • Precise component alignment enabled by the 50mm shoulder with tight diameter tolerance for smooth rotational movement.
  • Secure, tamper-resistant installation with the 2.5mm hex socket drive and knurled head for enhanced grip and torque application.
  • Consistent thread engagement ensured by Class 5g6g thread fit and M5x0.8 coarse pitch for quick assembly and vibration resistance.
  • Durable, long-lasting performance backed by Rockwell B55 hardness, resisting wear and deformation in industrial use.
  • Global regulatory compliance with RoHS 3 and REACH, ensuring safe, environmentally responsible sourcing for international projects.

Professional Applications & Engineering Value

This M5 shoulder screw is engineered to address critical alignment and durability challenges in industrial applications. The 50mm shoulder length provides a precise bearing surface for rotating components like gears, pulleys, and linkages, minimizing misalignment and wear. Manufactured from 18-8 Stainless Steel, it offers excellent corrosion resistance in moist or chemical-exposed settings, extending service life. The hex socket head with knurling allows for high-torque installation in confined spaces, reducing the risk of stripping. With a coarse thread pitch and Class 5g6g thread fit, it ensures rapid, secure fastening in machinery, automation systems, and electronic enclosures, enhancing assembly efficiency and reliability.

Specification Summary & Compliance

This precision shoulder screw adheres to Metric standards with M5x0.8 coarse threads and Class 5g6g thread fit for dimensional accuracy. The shoulder diameter tolerance is -0.04 to -0.01 mm, and shoulder length tolerance is 0 to 0.25 mm, ensuring consistent fit. It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, supporting use in regulated industries.

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