S-90269A508 M4 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh industrial environments and extended service life.
• Exceptional mechanical strength offering 70,000 psi tensile and 35,000 psi shear strength for reliable performance under high-stress applications.
• Precise component alignment enabled by the machined shoulder with controlled diameter and length tolerances for accurate positioning.
• Enhanced grip and tool engagement from the knurled socket head and hex drive, preventing slippage during installation.
• Optimized thread engagement with Class 5g6g fit and coarse M4x0.7mm thread, ensuring secure fastening and vibration resistance.
• Durable black oxide finish that adds an extra layer of corrosion protection and a professional, non-reflective appearance.
• Compliance with global standards including RoHS 3 and REACH, ensuring safety and environmental responsibility for international projects.

Professional Applications & Engineering Value

This M4 shoulder screw is engineered to solve critical alignment and durability challenges in precision assemblies. The 316 stainless steel material provides outstanding resistance to chemicals, saltwater, and industrial atmospheres, making it perfect for marine equipment, chemical processing machinery, and food-grade applications. The black oxide finish not only enhances corrosion protection but also reduces light reflection in sensitive optical or electronic devices. The precisely machined shoulder acts as a reliable pivot or spacer, maintaining exact component positioning in rotating mechanisms, pulleys, and jigs, while the Class 5g6g thread fit ensures consistent clamping force and prevents loosening under dynamic loads. Its knurled socket head allows for secure tool engagement, speeding up assembly in hard-to-reach areas.

Specification Summary & Compliance

This shoulder screw features a metric M4x0.7mm coarse thread with a Class 5g6g thread fit for standard industrial tolerance. The shoulder diameter is 5 mm with a tolerance of -0.072 to -0.01 mm, and the shoulder length is 11 mm with a tolerance of 0 to 0.25 mm, ensuring high dimensional accuracy. It is manufactured from 316 stainless steel with a black oxide finish and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance standards, confirming its suitability for regulated and environmentally conscious applications.