S-90265A578 M3 ISO 7379 Shoulder Screws

Key Features & Benefits at a Glance

• Exceptional Corrosion Resistance: Crafted from 18-8 stainless steel with a black oxide finish for superior protection against rust and wear in harsh industrial environments.
• High Tensile & Shear Strength: Withstands demanding applications, offering a 70,000 psi tensile strength and 45,000 psi minimum shear strength for reliable, heavy-duty fastening.
• Precision Alignment & Pivot Function: The 5mm diameter shoulder with a 10mm length ensures accurate component positioning and acts as a durable pivot or axle.
• Secure & Non-Slip Installation: The knurled head and hex socket drive provide excellent grip, preventing tool slippage and ensuring tight, secure fastening.
• Optimized for Quick Assembly: Right-hand coarse threads (M3 x 0.5mm) enable rapid installation and removal, boosting production line efficiency.
• Guaranteed Dimensional Accuracy: Manufactured to Class 5g6g thread fit and precise shoulder tolerances for consistent performance and easy interchangeability.
• Long-Term Reliability: A Rockwell B83 hardness rating ensures high durability and resistance to deformation under load.

Professional Applications & Engineering Value

This M3 shoulder screw is engineered to solve critical alignment and pivot challenges in industrial applications. The 18-8 stainless steel construction provides excellent corrosion resistance, making it ideal for machinery exposed to moisture or chemicals. The black oxide finish not only enhances this protection but also reduces galling. The integral 10mm shoulder acts as a precise locating dowel or bearing surface, preventing component misalignment and reducing wear on threaded sections. Combined with the knurled hex socket head, it ensures secure torque transmission and easy maintenance in confined spaces. Its high-strength properties and coarse metric threads make it a robust choice for securing moving parts in assemblies, jigs, and fixtures, delivering long-term operational stability.

Specification Summary & Compliance

This shoulder screw features an M3 x 0.5mm thread with a Class 5g6g fit for precise engagement. The shoulder diameter is 5 mm with a tolerance of -0.072 to -0.01 mm, and the shoulder length is 10 mm with a tolerance of 0 to 0.25 mm. It is manufactured in compliance with ISO 7379 and is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, ensuring it meets stringent international environmental and safety standards.