S-91273A341 M3 Shoulder Screws

Shoulder Screws

0544FA00172 Shoulder Screws
0544FA00172 Shoulder Screws

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

Part No.
Part No. 0544FA00172
Equivalent to mcmaster :
91273A341

Basic Information

System of Measurement Metric

Head Parameters

Head Type Socket
Head Diameter 5 mm
Head Height 2 mm
Head Texture Knurled
Socket Head Profile Standard

Dimensions

Shoulder Diameter 3 mm
Shoulder Diameter Tolerance -0.04 to -0.01 mm
Shoulder Fit Standard
Shoulder Length 23 mm
Shoulder Length Tolerance 0 to 0.25 mm

Thread Parameters

Thread Type Metric
Thread Size M3
Thread Pitch 0.5 mm
Thread Spacing Coarse
Thread Length 4 mm
Thread Direction Right Hand
Thread Fit Class 5g6g

Tip & Drive Parameters

Drive Style Hex
Drive Size 2 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 industrial environments
  • Enhanced torque transmission from the knurled socket head and 2mm hex drive, preventing tool slippage
  • Precise component alignment ensured by the 23mm shoulder with controlled diameter tolerance
  • High mechanical strength with 70,000 psi tensile and 35,000 psi shear strength for demanding applications
  • Reliable coarse thread engagement with Class 5g6g fit for faster assembly and vibration resistance
  • Durable, long-lasting performance backed by Rockwell B55 hardness for wear resistance
  • Global compliance assurance meeting RoHS 3 and REACH regulations for safe use

Professional Applications & Engineering Value

This M3 shoulder screw is engineered to solve critical alignment and spacing challenges in precision assemblies. The 23mm shoulder length acts as a precise pivot or axle, eliminating the need for separate spacers and reducing component count. Manufactured from 18-8 stainless steel, it offers excellent resistance to corrosion and oxidation, making it suitable for industrial equipment, electronics, and automotive applications where environmental durability is paramount. The knurled socket head with a 2mm hex drive provides a secure, non-slip grip for high-torque installation, while the M3x0.5 coarse thread ensures rapid, secure fastening even in vibrating environments. This combination of material integrity and design precision delivers reliable performance and reduces maintenance cycles.

Specification Summary & Compliance

This metric shoulder screw features an M3x0.5 thread with a Class 5g6g thread fit for standard industrial tolerance. The shoulder diameter tolerance is -0.04 to -0.01 mm, and the shoulder length tolerance is 0 to 0.25 mm, ensuring high dimensional accuracy. It is manufactured in compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for global markets and environmentally conscious manufacturing processes.

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