S-90265A584 M3 ISO 7379 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance from 18-8 stainless steel construction, ideal for harsh industrial environments and extending service life.
• Enhanced durability and wear resistance with a black oxide finish, providing a protective layer against abrasion and reducing galling.
• High mechanical strength with a tensile strength of 70,000 psi and Rockwell B83 hardness, ensuring reliable performance under heavy loads.
• Precise alignment and spacing enabled by the 17mm shoulder with controlled tolerances, reducing wear on mating parts and simplifying assembly.
• Secure and non-slip fastening thanks to the knurled socket head and 2.5 mm hex drive, allowing for high torque application and easy installation.
• Accurate and reliable threading with Class 5g6g thread fit and coarse M3 x 0.5 mm pitch, ensuring consistent engagement and vibration resistance.
• Global compliance and quality assurance meeting ISO 7379 standards and RoHS 3/REACH regulations, guaranteeing safety and international acceptability.

Professional Applications & Engineering Value

This M3 shoulder screw is engineered to address critical alignment and pivot point requirements in precision assemblies. The 17mm shoulder length acts as a precise spacer or bearing surface, preventing axial movement and reducing stress concentrations in applications like machinery linkages, rotating shafts, and electronic enclosures. Manufactured from 18-8 stainless steel, it offers excellent resistance to rust and corrosion, which is vital for maintaining integrity in moist or chemically aggressive industrial environments. The black oxide finish not only enhances corrosion protection but also minimizes friction during adjustment. Combined with the knurled socket head for secure tool grip, this screw ensures reliable, repeatable performance in automated production lines and high-vibration equipment, streamlining maintenance and reducing downtime.

Specification Summary & Compliance

This shoulder screw features a Class 5g6g thread fit and a shoulder diameter tolerance of -0.072 to -0.01 mm, ensuring high dimensional accuracy for consistent assembly. It is manufactured in compliance with the ISO 7379 standard for shoulder screws, guaranteeing interchangeability and performance. The product is also confirmed to be RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, adhering to strict environmental and safety regulations for hazardous substances.