S-90265A101 M1.6 Shoulder Screws

Shoulder Screws

0543FA00002 Shoulder Screws
0543FA00002 Shoulder Screws

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

Part No.
Part No. 0543FA00002
Equivalent to mcmaster :
90265A101

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

Thread Parameters

Thread Type Metric
Thread Size M1.6
Thread Pitch 0.35 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 B83
Tensile Strength 70000 psi
Minimum Shear Strength 45000 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 long-term reliability.
  • High mechanical strength offering 70,000 psi tensile and 45,000 psi shear strength, ensuring secure fastening under load.
  • Precise thread engagement with Class 5g6g fit and coarse 0.35mm pitch for quick assembly and reduced cross-threading risk.
  • Easy installation and removal via the 2mm hex socket drive and knurled head, providing excellent grip and torque application.
  • Accurate shoulder positioning with 4mm length and tight diameter tolerance, enabling precise component alignment.
  • Consistent performance backed by Rockwell B83 hardness, maintaining thread integrity through repeated use.
  • Compliance with environmental standards including RoHS 3 and REACH, ensuring safe and sustainable use in regulated industries.

Professional Applications & Engineering Value

This M1.6 shoulder screw is engineered to address critical assembly challenges in precision industries such as electronics, medical devices, and small machinery. The 18-8 stainless steel material provides excellent resistance to oxidation and corrosion, extending service life in humid or chemically exposed settings. The hex socket drive and knurled head design allow for high-torque installation without slippage, reducing tool wear and assembly time. With its Class 5g6g thread and coarse pitch, it ensures rapid, secure fastening while minimizing the risk of stripping in delicate components. The precisely machined shoulder offers stable alignment for rotating parts, making it invaluable in applications requiring minimal backlash and high positional accuracy.

Specification Summary & Compliance

This shoulder screw features a metric M1.6x0.35mm coarse thread with Class 5g6g tolerance for consistent fit. The shoulder diameter tolerance is -0.072 to -0.01 mm, and shoulder length tolerance is 0 to 0.25 mm, ensuring precise dimensional control. Manufactured in compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), it meets stringent environmental and safety standards for industrial use.

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