S-91273A364 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
- Exceptional corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments
- Precise component alignment thanks to the 8mm shoulder length with tight tolerances for reduced assembly vibration
- Superior thread reliability with Class 5g6g thread fit ensuring consistent engagement and reduced cross-threading risks
- High-strength performance delivering 70,000 psi tensile strength for demanding mechanical applications
- Secure installation and removal with 2mm hex socket drive and knurled head for enhanced grip
- Optimized for coarse threading applications with M4 x 0.7mm thread for faster assembly in softer materials
- Full regulatory compliance meeting RoHS 3 and REACH standards for global manufacturing requirements
Professional Applications & Engineering Value
This precision M4 shoulder screw delivers critical engineering value in applications requiring exact component positioning and high mechanical strength. The 18-8 stainless steel construction provides excellent corrosion resistance for food processing, marine, and chemical equipment, while the 8mm shoulder length with controlled tolerances ensures precise alignment in machinery, robotics, and precision instruments. The Class 5g6g thread fit combined with coarse pitch threading enables rapid assembly in aluminum and plastic components, reducing production time. The hex socket drive with knurled head offers superior torque transmission in confined spaces, making these shoulder screws ideal for high-vibration environments where fastener integrity is paramount.
Specification Summary & Compliance
This metric shoulder screw features M4 x 0.7mm coarse pitch threading with Class 5g6g thread fit per ISO standards. Shoulder diameter maintains -0.04 to -0.01 mm tolerance with shoulder length tolerance of 0 to 0.25 mm. Manufactured from 18-8 stainless steel with Rockwell B55 hardness, delivering 70,000 psi tensile strength and 35,000 psi minimum shear strength. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations for restricted substances.
