S-90278A323 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, ideal for harsh industrial environments
- Precise component alignment enabled by the 5mm shoulder diameter with tight tolerance for accurate positioning
- High mechanical strength delivering 70,000 psi tensile strength and Rockwell B55 hardness for reliable load-bearing applications
- Secure installation with hex socket drive requiring only 2.5mm tool, preventing cam-out and ensuring proper torque transfer
- Consistent thread engagement through Class 6g metric coarse threads (M4 x 0.7mm) for vibration resistance
- Environmental compliance meeting RoHS 3 and REACH standards for safe use in regulated industries
- Optimized shoulder dimensions with 6mm length and precise tolerances for stable rotational support
Professional Applications & Engineering Value
These precision shoulder screws deliver exceptional value in applications requiring exact component positioning and rotational stability. The 18-8 stainless steel construction provides excellent corrosion resistance for machinery operating in demanding environments, while the M4 x 0.7mm coarse thread with Class 6g fit ensures reliable fastening in vibrating assemblies. The 5mm shoulder diameter with precise tolerance offers superior alignment for bearings, gears, and pivoting mechanisms, eliminating the need for additional bushings. The hex socket drive allows for high-torque installation in confined spaces, making these metric shoulder screws ideal for precision equipment, automation systems, and mechanical assemblies where dimensional accuracy is critical.
Specification Summary & Compliance
This M4 shoulder screw features Class 6g thread fit per metric standards, with shoulder diameter tolerance of -0.025 to 0 mm and shoulder length tolerance of 0 to 0.05 mm for precision applications. Manufactured from 18-8 stainless steel with Rockwell B55 hardness and 70,000 psi tensile strength. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations for industrial use.
