S-90318A760 M4 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction for reliable performance in harsh industrial environments
• Precise component alignment through controlled shoulder dimensions (5mm diameter, 4mm length) with tight manufacturing tolerances
• Enhanced fastening security with Class 6g thread fit ensuring consistent engagement and vibration resistance
• Space-saving installation featuring ultra-low socket head design ideal for compact assemblies
• High mechanical strength delivering 70,000 psi tensile strength and Rockwell B70 hardness for demanding applications
• Easy installation and maintenance with standard 2.5mm hex drive and right-hand coarse threading
• Regulatory compliance assurance meeting RoHS 3 and REACH standards for global industrial use

Professional Applications & Engineering Value

This M4 shoulder screw delivers exceptional engineering value in precision assembly applications where component alignment and corrosion resistance are critical. The 316 stainless steel construction provides superior protection against chemical exposure and atmospheric corrosion, making it ideal for marine, chemical processing, and food equipment applications. The precise shoulder dimensions (5mm diameter with -0.025 to 0 mm tolerance, 4mm length with 0 to 0.05 mm tolerance) ensure accurate component positioning and rotational stability in machinery, automation systems, and precision instruments. The ultra-low socket head profile with 2.5mm hex drive allows for compact designs while maintaining high torque transmission capability. Combined with Class 6g thread fit and coarse threading, this shoulder screw prevents loosening under vibration and enables quick assembly in high-volume manufacturing environments.

Specification Summary & Compliance

This precision metric shoulder screw features M4x0.7mm coarse threading with Class 6g thread fit per ISO metric standards, ensuring dimensional accuracy and interchangeability. The shoulder maintains precise tolerances with diameter controlled to -0.025 to 0 mm and length to 0 to 0.05 mm for engineering applications requiring exact positioning. Manufactured from 316 stainless steel with Rockwell B70 hardness, the fastener delivers consistent mechanical properties including 70,000 psi tensile strength and 35,000 psi minimum shear strength. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, meeting current environmental and substance restriction requirements for industrial components.