S-90269A488 M3 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh industrial environments and chemical exposure
• Enhanced durability and wear resistance from the black oxide finish, providing long-lasting performance under demanding conditions
• Precise component alignment enabled by the 4mm shoulder diameter with tight tolerance control for reliable assembly
• Secure installation and removal with the knurled hex socket head design, preventing tool slippage during high-torque applications
• Consistent thread engagement through Class 5g6g thread fit, ensuring reliable fastening in precision machinery
• High mechanical strength with 70,000 psi tensile strength, supporting heavy-duty applications without failure
• Environmental compliance assurance meeting RoHS 3 and REACH standards for safe use in regulated industries

Professional Applications & Engineering Value

This M3 shoulder screw delivers exceptional engineering value in precision assemblies where alignment and corrosion resistance are critical. The 316 stainless steel material provides outstanding protection against chemical and saltwater corrosion, making it ideal for marine, chemical processing, and food manufacturing equipment. The 5mm shoulder length with controlled diameter tolerance acts as a precise locating dowel, eliminating component misalignment in rotating assemblies and precision guides. The black oxide finish enhances surface durability while reducing galling during installation. Combined with the Class 5g6g thread fit and coarse 0.5mm pitch, these shoulder screws ensure reliable performance in vibration-prone applications while facilitating quicker assembly in production environments.

Specification Summary & Compliance

This precision metric shoulder screw features M3 x 0.5mm coarse pitch threads with Class 5g6g thread fit per ISO standards. The shoulder diameter maintains -0.072 to -0.01 mm tolerance with shoulder length tolerance of 0 to 0.25 mm. Manufactured from 316 stainless steel with Rockwell B79 hardness, it delivers 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) environmental regulations for industrial use.