S-90269A133 M4 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh environments and extended service life.
• Exceptional mechanical strength offering 70,000 psi tensile strength and 35,000 psi shear strength for reliable performance under high stress.
• Precise alignment and pivot function enabled by the 20mm long, 5mm diameter shoulder with controlled tolerances.
• Secure and efficient installation using the 2.5 mm hex socket drive and knurled head for improved grip and torque application.
• Consistent and reliable threading with Class 5g6g fit M4 x 0.7mm coarse thread, ensuring easy assembly and vibration resistance.
• Enhanced durability from Rockwell B79 hardness, providing excellent wear resistance in dynamic applications.
• Compliance with global standards, being RoHS 3 and REACH compliant for safe use in regulated industries.

Professional Applications & Engineering Value

This M4 shoulder screw is engineered to address critical alignment and rotational challenges in precision assemblies. The 316 stainless steel material provides outstanding resistance to chemicals, saltwater, and industrial atmospheres, preventing failure in corrosive settings. The integrated 20mm shoulder acts as a precise locating dowel or pivot point, eliminating the need for separate spacers and reducing assembly components. Paired with the hex socket drive and knurled head texture, it ensures secure fastening in high-vibration machinery, automation systems, and metric-based equipment. Its Class 5g6g thread fit guarantees consistent engagement, making it a reliable choice for manufacturers requiring repeatable accuracy and durability in demanding mechanical applications.

Specification Summary & Compliance

This shoulder screw features a metric coarse thread (M4 x 0.7mm) with a Class 5g6g thread fit per ISO standards, ensuring dimensional accuracy and interchangeability. The shoulder diameter is manufactured to a tolerance of -0.072 to -0.01 mm, and the shoulder length to 0 to 0.25 mm, providing precise control for alignment-critical applications. It is produced in compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for use in environmentally conscious and regulated industrial sectors.