S-91273A774 M3 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, ideal for harsh industrial environments.
- Enhanced durability and wear resistance from the Black Oxide finish, reducing maintenance needs.
- Precise alignment and secure component positioning thanks to the 8mm shoulder with tight diameter tolerance.
- High mechanical strength with 70,000 psi tensile and 35,000 psi shear strength for demanding applications.
- Easy installation and removal using a standard 2mm hex drive and knurled head for improved grip.
- Reliable thread engagement with Class 5g6g metric coarse threads ensuring consistent fastening performance.
- Compliance with environmental regulations including RoHS 3 and REACH, supporting sustainable manufacturing practices.
Professional Applications & Engineering Value
This M3 shoulder screw is engineered to address critical alignment and wear challenges in precision assemblies. The 18-8 stainless steel material provides excellent resistance to corrosion and oxidation, while the Black Oxide finish adds an extra layer of protection against abrasion and galling. The 8mm shoulder length with minimal diameter tolerance ensures accurate component spacing and reduces stress concentration in applications like machinery linkages, electronic enclosures, and automotive fixtures. Combined with a Class 5g6g thread fit and coarse pitch, it offers quick assembly and reliable holding power, minimizing the risk of loosening under vibration. Ideal for use in robotics, conveyor systems, and precision instruments, this screw enhances operational reliability and reduces downtime.
Specification Summary & Compliance
This shoulder screw adheres to metric system standards with an M3 x 0.5mm coarse thread and Class 5g6g thread fit for precise tolerance. 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 is manufactured to meet RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, supporting safe and environmentally responsible industrial use.
