S-90265A187 M3 ISO 7379 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments and washdown applications
• Enhanced torque transmission and slip resistance through the knurled socket head design with 2.5mm hex drive
• High mechanical strength and durability with Rockwell B83 hardness and 70,000 psi tensile strength for demanding applications
• Precise component alignment and spacing enabled by the 5mm diameter shoulder with tight diameter tolerance
• Reliable coarse thread engagement with M3 x 0.5mm Class 5g6g threads for quick assembly and vibration resistance
• Full regulatory compliance meeting ISO 7379 standards, RoHS 3, and REACH for global industrial use
• Consistent dimensional accuracy with controlled shoulder length tolerance ensuring repeatable assembly performance

Professional Applications & Engineering Value

This M3 shoulder screw delivers exceptional engineering value in precision assembly applications where alignment, spacing, and corrosion resistance are critical. The 18-8 stainless steel construction provides excellent resistance to oxidation and chemical exposure, making it suitable for food processing equipment, medical devices, and outdoor machinery. The knurled socket head with 2.5mm hex drive ensures maximum torque transmission while preventing tool slippage during installation. The precision shoulder diameter and length tolerances enable exact component positioning in rotating assemblies, bearing mounts, and linkage systems. With its coarse thread pitch and Class 5g6g thread fit, this fastener offers rapid assembly and disassembly while maintaining secure fastening in high-vibration environments typical of industrial automation and machinery.

Specification Summary & Compliance

This precision shoulder screw features M3 x 0.5mm coarse pitch threads with Class 5g6g thread fit tolerance. The shoulder diameter maintains -0.072 to -0.01 mm tolerance with shoulder length tolerance of 0 to 0.25 mm. Manufactured to ISO 7379 specifications and compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. The 18-8 stainless steel material provides Rockwell B83 hardness and 70,000 psi tensile strength with minimum shear strength of 45,000 psi for reliable performance in industrial applications.