S-91273A782 M4 Shoulder Screws
Shoulder Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Superior corrosion resistance with 18-8 Stainless Steel construction and Black Oxide finish, ideal for harsh industrial environments.
- Precise component alignment ensured by the 4mm shoulder diameter with tight tolerance control for reliable assembly fit.
- High mechanical strength offering 70,000 psi tensile and 35,000 psi shear strength for demanding applications.
- Enhanced durability from Rockwell B55 hardness, resisting wear and deformation under load.
- Secure and easy installation with a hex socket drive and knurled head for improved grip and torque application.
- Accurate and consistent threading with Class 5g6g fit and coarse M4x0.7mm metric thread for quick assembly.
- Compliance with environmental regulations including RoHS 3 and REACH, ensuring safe and sustainable use.
Professional Applications & Engineering Value
This M4 shoulder screw is engineered to address critical alignment challenges in precision assemblies, such as in machinery, automotive, and electronics. The 18-8 Stainless Steel material combined with a Black Oxide finish provides excellent resistance to corrosion and oxidation, extending service life in moist or chemically aggressive settings. The 4mm shoulder diameter with controlled tolerances ensures exact positioning of components, reducing misalignment and vibration issues. With a hex socket head and knurled texture, it allows for efficient installation in confined spaces, while the Class 5g6g thread fit guarantees secure fastening without loosening. Ideal for applications requiring reliable shoulder screws with high tensile strength and compliance, this fastener supports robust industrial performance and long-term reliability.
Specification Summary & Compliance
This shoulder screw adheres to metric system standards with an M4x0.7mm coarse thread and Class 5g6g thread fit for precise 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 performance. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free from hazardous substances and suitable for global industrial use.
