S-90265A802 M8 ISO 7379 Shoulder Screws

Shoulder Screws

0543FA00308 Shoulder Screws
0543FA00308 Shoulder Screws

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

Part No.
Part No. 0543FA00308
Equivalent to mcmaster :
90265A802

Basic Information

System of Measurement Metric

Head Parameters

Head Type Socket
Head Diameter 18 mm
Head Height 9 mm
Head Texture Knurled
Socket Head Profile Standard

Dimensions

Shoulder Diameter 12 mm
Shoulder Diameter Tolerance -0.072 to -0.01 mm
Shoulder Fit Standard
Shoulder Length 40 mm
Shoulder Length Tolerance 0 to 0.25 mm

Thread Parameters

Thread Type Metric
Thread Size M8
Thread Pitch 1.25 mm
Thread Spacing Coarse
Thread Length 16 mm
Thread Direction Right Hand
Thread Fit Class 5g6g

Tip & Drive Parameters

Drive Style Hex
Drive Size 6 mm

Material & Strength

Material 18-8 Stainless Steel
Finish Black Oxide
Hardness Rockwell B83
Tensile Strength 70000 psi
Minimum Shear Strength 45000 psi

Temperature & Environment

REACH Compliant
RoHS Compliant
Specifications Met ISO 7379
Technical Drawings No drawings available at the moment, will be launched soon
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Key Features & Benefits at a Glance

  • Exceptional corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments.
  • Enhanced durability and wear resistance from the Black Oxide finish, providing a protective layer against abrasion.
  • High tensile strength of 70,000 psi ensures reliable performance in heavy-duty and high-stress applications.
  • Precise alignment and reduced wear with a 40mm shoulder length and tight diameter tolerance for stable component positioning.
  • Secure and efficient installation using a standard 6mm hex drive and knurled head for superior grip and torque application.
  • Wide compatibility with coarse M8x1.25 metric threads and Class 5g6g fit, ensuring easy assembly and interchangeability.
  • Compliance with international standards including ISO 7379, RoHS, and REACH, guaranteeing safety and environmental responsibility.

Professional Applications & Engineering Value

This M8 shoulder screw is engineered to address common industrial challenges such as misalignment, vibration loosening, and component wear. The 18-8 stainless steel material offers excellent resistance to rust and corrosion, making it suitable for applications in machinery, automotive assemblies, and outdoor equipment. The Black Oxide finish not only enhances aesthetics but also adds a layer of protection against friction and environmental factors. With a 40mm shoulder length and precise Class 5g6g thread fit, it provides stable pivoting and alignment in rotating parts, reducing maintenance downtime. The socket head with hex drive allows for easy installation in confined spaces, while the knurled texture improves handling during assembly. Ideal for use in precision instruments, conveyor systems, and heavy-duty fixtures, this fastener ensures long-term reliability and performance in demanding engineering applications.

Specification Summary & Compliance

This shoulder screw features a metric M8x1.25 coarse thread with a Class 5g6g thread fit for precise tolerance, ensuring consistent performance. The shoulder diameter is tightly controlled with a tolerance of -0.072 to -0.01 mm, and the shoulder length has a tolerance of 0 to 0.25 mm for accurate assembly. Manufactured in compliance with ISO 7379 standards, it meets rigorous quality and dimensional requirements. Additionally, it is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, adhering to environmental and safety regulations for hazardous substances.

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