S-90269A516 M4 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance in harsh environments due to 316 stainless steel construction with black oxide finish
• Precise component alignment enabled by 5mm shoulder diameter with tight tolerance control for reduced assembly errors
• High mechanical strength with 70,000 psi tensile strength and 35,000 psi shear strength for demanding applications
• Secure tool engagement through knurled socket head design preventing driver slippage during installation
• Reliable thread performance with Class 5g6g thread fit ensuring consistent mating and vibration resistance
• Quick installation using standard 2.5mm hex drive tools for efficient assembly operations
• Environmental compliance meeting RoHS 3 and REACH standards for global manufacturing requirements

Professional Applications & Engineering Value

This M4 shoulder screw delivers exceptional engineering value in precision assemblies where component alignment and corrosion resistance are critical. The 316 stainless steel construction with black oxide finish provides superior protection against chemical exposure and moisture, making it ideal for marine, chemical processing, and outdoor equipment applications. The precisely machined 13mm shoulder length acts as a built-in spacer or pivot point, eliminating the need for additional components in mechanisms requiring precise axial positioning. The knurled socket head with 2.5mm hex drive ensures positive tool engagement in high-torque assembly environments, while the Class 5g6g thread fit maintains consistent clamping force in vibrating systems. These precision shoulder screws solve common assembly challenges by providing integrated alignment features with the durability needed for industrial automation, machinery, and precision instrument applications.

Specification Summary & Compliance

This metric shoulder screw features M4 x 0.7mm coarse threading with Class 5g6g thread fit per ISO standards, ensuring precise engagement with mating components. The shoulder diameter maintains tight tolerance control (-0.072 to -0.01 mm) while the shoulder length tolerance (0 to 0.25 mm) guarantees consistent spacing performance. Manufactured from 316 stainless steel with Rockwell B79 hardness, the fastener meets mechanical requirements for industrial applications. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, making it suitable for global manufacturing and export requirements.