S-90269A531 M4 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh or chemical-exposed environments.
• Precise component alignment ensured by the 15mm shoulder length, reducing wear and misalignment in assemblies.
• High mechanical strength with 70,000 psi tensile strength and 35,000 psi shear strength for reliable performance under load.
• Secure and flush installation using the 2.5mm hex socket drive and knurled head for improved grip and torque application.
• Accurate and consistent threading with Class 5g6g thread fit and M4 x 0.7mm coarse pitch for easy assembly and vibration resistance.
• Environmental and regulatory compliance meeting RoHS 3 and REACH standards, ensuring safety and sustainability.
• Durable and long-lasting performance backed by Rockwell B79 hardness, maintaining integrity in repetitive use.

Professional Applications & Engineering Value

This M4 shoulder screw in 316 stainless steel is engineered to address critical challenges in precision machinery, automation, and electronic enclosures. The 15mm shoulder length provides a stable pivot or spacer, eliminating the need for additional bushings and reducing assembly complexity. With a Class 5g6g thread fit and coarse thread pitch, it ensures quick, secure fastening in high-vibration settings, while the knurled socket head allows for efficient torque transfer without slippage. Ideal for applications requiring exact alignment and corrosion resistance, such as in marine, chemical processing, or medical devices, this screw enhances operational reliability and reduces maintenance costs.

Specification Summary & Compliance

This precision shoulder screw adheres to metric system standards with an M4 x 0.7mm thread size and Class 5g6g thread tolerance. The shoulder diameter is 5 mm with a tolerance of -0.072 to -0.01 mm, and the shoulder length is 15 mm with a tolerance of 0 to 0.25 mm, ensuring dimensional accuracy. Manufactured from 316 stainless steel, it complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for environmentally conscious and regulated industries.