S-91273A854 M12 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, extending service life.
- Precise component alignment and positioning ensured by the 45mm shoulder with controlled tolerances.
- High tensile strength (70,000 psi) and shear strength (35,000 psi) for demanding mechanical applications.
- Secure, non-slip installation facilitated by the knurled socket head and 6mm hex drive.
- Accurate and reliable thread engagement with Class 5g6g metric thread fit for consistent performance.
- Compliance with environmental regulations (RoHS 3 and REACH) for safe and responsible use.
Professional Applications & Engineering Value
This M12 shoulder screw is engineered to address critical alignment and rotational control challenges in machinery and assemblies. The 18-8 stainless steel material provides excellent resistance to rust and corrosion, making it suitable for applications exposed to moisture or chemicals. The black oxide finish not only adds an extra layer of protection but also reduces galling during installation. The precisely machined 45mm shoulder length acts as a reliable datum for locating parts like gears, bearings, or pulleys, eliminating misalignment and reducing wear. Its Class 5g6g thread fit and coarse 1.75mm pitch ensure quick assembly and high vibration resistance, which is vital in automotive, conveyor systems, and heavy equipment where reliable shoulder positioning and long-term performance are non-negotiable.
Specification Summary & Compliance
This shoulder screw features a Class 5g6g thread fit per metric standards, with a shoulder diameter tolerance of -0.04 to -0.01 mm and shoulder length tolerance of 0 to 0.25 mm for high dimensional accuracy. It is manufactured from 18-8 stainless steel with a hardness of Rockwell B55 and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring it is free of restricted hazardous substances for industrial use.
