S-90323A254 M8 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction and passivated finish, ideal for harsh environments and extended service life.
• Exceptional mechanical strength offering 80,000 psi tensile strength and Rockwell B95 hardness for reliable performance under heavy loads.
• Precise component alignment ensured by the precisely machined 10mm diameter shoulder with tight tolerances for smooth rotational movement.
• Reliable and secure fastening provided by the Class 6g thread fit, ensuring consistent engagement and vibration resistance.
• Space-saving low-profile socket head with a 5mm hex drive allows for installation in confined spaces and provides a clean, flush appearance.
• Broad industrial compatibility with metric M8x1.25 coarse threading, making it a versatile choice for machinery and equipment assembly.
• Compliance with strict environmental regulations, being RoHS 3 and REACH compliant for use in regulated markets and sustainable manufacturing.

Professional Applications & Engineering Value

This M8 shoulder screw is engineered to address critical alignment and rotational movement challenges in industrial applications. The precision shoulder, with its controlled diameter and length tolerances, acts as a dependable pivot or axle, reducing wear on mating components and maintaining exact positioning in assemblies like linkages, gears, and pivoting mechanisms. Manufactured from 18-8 stainless steel and featuring a passivated finish, it provides excellent resistance to rust and corrosion, ensuring long-term reliability even in demanding conditions. The low profile socket head with a 5mm hex drive offers a secure, tamper-resistant installation in tight spaces, while the Class 6g thread fit on the M8x1.25 metric thread guarantees a strong, vibration-resistant connection. This combination of precise geometry, durable material, and robust construction delivers significant engineering value by enhancing machine performance, reducing maintenance needs, and increasing the overall lifespan of the assembly.

Specification Summary & Compliance

This precision shoulder screw features an M8x1.25 coarse metric thread with a Class 6g thread fit for standard industrial use. The unthreaded shoulder has a diameter of 10 mm with a tolerance of -0.025 to 0 mm and a length of 16 mm with a tolerance of 0 to 0.05 mm, ensuring precise fit and alignment. The fastener is manufactured from 18-8 Stainless Steel and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations.