S-98621A133 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 demanding industrial environments
- Exceptional wear resistance and extended service life from TiCN coating that reduces friction and prevents galling
- Precise component alignment and secure positioning thanks to the 25mm shoulder with tight length tolerance (0 to +0.05mm)
- High mechanical strength and reliability with 70,000 psi tensile strength and Rockwell B55 hardness for heavy-duty applications
- Accurate and secure fastening ensured by Class 6g thread fit and M4 x 0.7mm coarse thread for quick assembly
- Easy installation with high torque capability using the standard hex socket and 2.5mm drive size
- Compliance with international environmental standards including RoHS 3 and REACH for global supply chain integration
Professional Applications & Engineering Value
This precision shoulder screw delivers critical engineering value in applications requiring exact axial positioning and rotational control. The 18-8 stainless steel base material provides excellent corrosion resistance, while the TiCN coating significantly enhances surface hardness and lubricity, reducing wear in high-cycle machinery. The 25mm shoulder with precise tolerances acts as a dependable datum for locating parts in assemblies, eliminating misalignment in precision equipment, automation systems, and jig/fixture manufacturing. The Class 6g metric thread ensures consistent engagement in tapped holes, making these socket head shoulder screws essential components where dimensional accuracy and long-term reliability are paramount.
Specification Summary & Compliance
This metric shoulder screw features an M4 x 0.7mm coarse thread with Class 6g tolerance and a precise shoulder diameter of 5mm (-0.025 to 0mm tolerance). The shoulder length is manufactured to 25mm with a tight 0 to +0.05mm tolerance for accurate positioning. Manufactured from 18-8 stainless steel with Rockwell B55 hardness and 70,000 psi tensile strength. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations.
