S-90265A167 M8 ISO 7379 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh environments and reducing long-term replacement costs.
• Precise component alignment and location thanks to the 50mm shoulder with controlled diameter tolerance, minimizing assembly play and vibration.
• High-strength performance with a tensile strength of 70,000 psi and Rockwell B55 hardness, ensuring reliable load-bearing capacity in demanding applications.
• Secure, non-slip fastening enabled by the knurled socket head and 5mm hex drive, providing excellent grip even with gloved hands.
• Guaranteed interchangeability and fit through compliance with the ISO 7379 standard and Class 5g6g thread fit, streamlining procurement and assembly.
• Environmental and regulatory compliance with RoHS 3 and REACH, ensuring the screw is safe for use in regulated markets and sustainable manufacturing.
• Optimized for high-volume assembly with a coarse (1.25mm pitch) right-hand thread, allowing for faster installation and reduced assembly time.

Professional Applications & Engineering Value

This M8 shoulder screw is engineered to solve critical alignment and pivot point challenges in industrial applications. The precision-ground 50mm shoulder acts as a built-in spacer or bearing surface, eliminating the need for and cost of separate dowel pins or bushings in assemblies like linkages, gears, and rotating machinery. Manufactured from 18-8 stainless steel, it provides excellent resistance to rust and corrosion, which is vital for food processing, packaging, and outdoor equipment. The knurled socket head with a hex drive ensures a secure tool grip, preventing cam-out and damage to the drive recess during high-torque installation. Its ISO 7379 certification guarantees dimensional consistency, making it a reliable component for automated production lines and precision engineering projects where repeatability is paramount.

Specification Summary & Compliance

This precision shoulder screw features an M8x1.25 coarse metric thread with a Class 5g6g fit for assured assembly. The shoulder diameter is held to a tight tolerance of -0.072 to -0.01 mm, and the shoulder length tolerance is 0 to +0.25 mm. The product is manufactured in accordance with ISO 7379 specifications and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations.