S-90278A422 M8 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.
- Precise alignment and positioning ensured by the exact 20mm shoulder length with tight tolerances for reliable assembly.
- High strength and durability with 70,000 psi tensile strength and Rockwell B55 hardness for demanding applications.
- Easy installation and removal using the standard 5mm hex socket drive, reducing tool slip and damage.
- Accurate thread fit with Class 6g metric coarse threads for secure fastening and vibration resistance.
- Compliance with environmental standards including RoHS 3 and REACH, ensuring safe and sustainable use.
- Smooth head texture minimizes friction and wear during operation in precision machinery.
Professional Applications & Engineering Value
This M8 shoulder screw is engineered to address critical alignment and durability challenges in industrial settings. The 18-8 stainless steel material provides excellent corrosion resistance, making it suitable for applications exposed to moisture, chemicals, or outdoor conditions. With a 20mm shoulder length and precise tolerances, it offers reliable positioning in assemblies like pivots, guides, and rotating components, reducing misalignment and wear. The hex socket drive allows for high-torque installation without stripping, while the Class 6g thread fit ensures consistent performance in machinery, automotive, and electronics. Its 70,000 psi tensile strength and Rockwell B55 hardness support heavy-duty use, enhancing equipment longevity and reducing maintenance costs.
Specification Summary & Compliance
This metric shoulder screw features an M8x1.25 coarse thread with Class 6g thread fit for standard tolerance. The shoulder diameter is 10mm with a tolerance of -0.025 to 0 mm, and the shoulder length is 20mm with a tolerance of 0 to 0.05 mm, ensuring precise assembly. 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.
