S-90265A561 M3 ISO 7379 Shoulder Screws

Key Features & Benefits at a Glance

• Enhanced Durability: 18-8 stainless steel construction provides excellent corrosion resistance, ideal for harsh industrial environments.
• Precise Alignment: A 25mm shoulder length with a tight tolerance (+0.25mm) ensures accurate component positioning and reduces assembly errors.
• Superior Strength: High tensile strength (70,000 psi) and shear strength (45,000 psi) support heavy-duty applications and increase joint reliability.
• Secure Fastening: Class 5g6g thread fit and coarse M3 x 0.5mm pitch offer robust, vibration-resistant connections.
• Corrosion-Resistant Finish: Black oxide coating adds an extra layer of protection, extending the screw's service life.
• Easy Installation: Hex socket drive (2 mm) and knurled head allow for secure tool grip and straightforward installation in confined spaces.
• Regulatory Compliance: Meets ISO 7379 standards and is RoHS 3/REACH compliant, ensuring safety and environmental responsibility.

Professional Applications & Engineering Value

This M3 shoulder screw is engineered to solve critical alignment and pivot point challenges in precision assemblies. The 18-8 stainless steel material, combined with a black oxide finish, resists corrosion in demanding conditions, reducing maintenance needs. Its 25mm shoulder length with minimal tolerance provides a stable bearing surface for gears, pulleys, or linkages, preventing axial movement and ensuring accurate rotational alignment. The hex socket drive and knurled head facilitate easy installation even in tight spaces, while the coarse thread pitch and Class 5g6g fit deliver reliable, vibration-resistant performance in machinery, automotive, and electronic enclosures. Ideal for applications requiring repeatable precision and durability.

Specification Summary & Compliance

This shoulder screw features a metric M3 x 0.5mm coarse thread with a Class 5g6g thread fit for precise engagement. The shoulder diameter is 4 mm with a tolerance of -0.072 to -0.01 mm, and the shoulder length is 25 mm with a tolerance of 0 to +0.25 mm, ensuring high dimensional accuracy. It complies with ISO 7379 manufacturing standards and is verified to be RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliant, meeting strict environmental and safety regulations.