S-90269A505 M4 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 added protection against rust and galling.
• High-strength performance offering 70,000 psi tensile strength and 35,000 psi minimum shear strength for reliable load-bearing in demanding applications.
• Precise alignment and smooth rotation enabled by the 20mm shoulder length with controlled tolerances, reducing wear on mating parts.
• Secure and stable fastening with Class 5g6g thread fit, ensuring consistent engagement and vibration resistance in coarse-threaded assemblies.
• Easy installation and removal using a standard 2.5 mm hex key, complemented by a knurled head for improved grip during manual adjustments.
• Compliance with environmental and safety standards including RoHS 3 and REACH, making it suitable for regulated industries and global supply chains.

Professional Applications & Engineering Value

This M4 shoulder screw is engineered to address common challenges in precision machinery and assembly lines, where misalignment and component wear can lead to costly downtime. The 316 Stainless Steel material provides exceptional resistance to corrosion from moisture, chemicals, and high temperatures, extending service life in applications like food processing equipment, marine hardware, and outdoor instrumentation. The 20mm shoulder length acts as a precise pivot or spacer, maintaining accurate alignment in rotating assemblies such as gears, pulleys, and linkages, while the coarse 0.7mm thread pitch ensures quick and secure fastening even in vibrating environments. Combined with a hex socket head and knurled texture, it allows for efficient tool engagement and manual handling, reducing installation time and improving operational reliability in automated systems.

Specification Summary & Compliance

This shoulder screw adheres to metric (M4 x 0.7mm) threading standards with a Class 5g6g thread fit for precise tolerance control. The shoulder diameter is manufactured to a tolerance of -0.072 to -0.01 mm, and the shoulder length maintains a 0 to 0.25 mm tolerance to ensure consistent performance. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming the absence of restricted substances and supporting use in environmentally conscious and industrial applications.