S-90269A469 M2 Shoulder Screws

Shoulder Screws

0546FA00251 Shoulder Screws
0546FA00251 Shoulder Screws

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

Part No.
Part No. 0546FA00251
Equivalent to mcmaster :
90269A469

Basic Information

System of Measurement Metric

Head Parameters

Head Type Socket
Head Diameter 6 mm
Head Height 3 mm
Head Texture Knurled
Socket Head Profile Standard

Dimensions

Shoulder Diameter 4 mm
Shoulder Diameter Tolerance -0.072 to -0.01 mm
Shoulder Fit Standard
Shoulder Length 6 mm
Shoulder Length Tolerance 0 to 0.25 mm

Thread Parameters

Thread Type Metric
Thread Size M2
Thread Pitch 0.4 mm
Thread Spacing Coarse
Thread Length 5 mm
Thread Direction Right Hand
Thread Fit Class 5g6g

Tip & Drive Parameters

Drive Style Hex
Drive Size 2 mm

Material & Strength

Material 316 Stainless Steel
Finish Black Oxide
Hardness Rockwell B79
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 316 stainless steel construction, ideal for harsh industrial environments and chemical exposure.
  • Enhanced durability and wear resistance from the black oxide finish, providing a protective layer against abrasion and reducing galling.
  • Precise alignment and smooth rotation ensured by the 6mm diameter shoulder with controlled tolerances, minimizing component wobble.
  • High-strength performance with 70,000 psi tensile and 35,000 psi shear strength, reliably handling dynamic loads and stress.
  • Secure, non-slip fastening thanks to the knurled hex socket head and 2mm drive, allowing for high-torque application without tool slippage.
  • Accurate and reliable thread engagement with Class 5g6g metric coarse threads, ensuring consistent fit and reducing cross-threading risks.
  • Compliance with strict environmental regulations including RoHS 3 and REACH, making it suitable for global industrial and electronic applications.

Professional Applications & Engineering Value

This M2 shoulder screw is engineered to address common challenges in precision assemblies, such as misalignment and component wear. The 316 stainless steel material offers excellent resistance to corrosion and high temperatures, which is critical in automotive, aerospace, and marine environments. The black oxide finish not only enhances aesthetics but also reduces friction and prevents seizing in high-cycle applications. With a knurled hex socket head, it provides a firm grip for assembly tools, reducing installation time and improving operator safety. The shoulder design acts as a precise spacer or pivot point in machinery, ensuring accurate positioning of parts like gears, bearings, and linkages, thereby extending equipment life and reducing maintenance needs.

Specification Summary & Compliance

This shoulder screw features a metric M2 x 0.4mm coarse thread with Class 5g6g tolerance for precise fit, a shoulder diameter of 6mm (tolerance: -0.072 to -0.01 mm), and shoulder length of 6mm (tolerance: 0 to 0.25 mm). It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and suitable for use in sensitive industrial and electronic applications worldwide.

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