S-90265A131 M4 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments
• Precise component alignment thanks to the 12mm shoulder with tight diameter tolerance for reduced assembly play
• High-strength performance with 70,000 psi tensile strength and 35,000 psi shear strength for demanding applications
• Secure, slip-resistant installation using the 2.5mm hex socket drive and knurled head for improved grip
• Reliable thread engagement with Class 5g6g fit and coarse M4x0.7mm thread for quick assembly and vibration resistance
• Environmental compliance assurance meeting RoHS 3 and REACH standards for safe, regulated use
• Consistent hardness at Rockwell B55 ensuring durability and wear resistance over multiple cycles

Professional Applications & Engineering Value

This M4 shoulder screw is engineered to address critical alignment and load-bearing challenges in precision assemblies. The 12mm shoulder length and controlled diameter tolerance provide a stable pivot or spacer, eliminating misalignment in machinery, robotics, and electronic enclosures. Manufactured from 18-8 stainless steel, it resists oxidation and chemical exposure, extending service life in humid or corrosive settings. The hex socket drive and knurled head texture allow for high-torque installation without slippage, while the coarse metric thread ensures rapid fastening and maintains hold under dynamic stresses. Ideal for securing rotating parts, guiding linear motion, or acting as an axle, this screw delivers repeatable precision and reduces maintenance downtime.

Specification Summary & Compliance

This shoulder screw features a Class 5g6g thread fit per metric standards, with a shoulder diameter tolerance of -0.072 to -0.01 mm and shoulder length tolerance of 0 to 0.25 mm for precise dimensional control. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring adherence to environmental and safety requirements. The mechanical properties, including Rockwell B55 hardness and 70,000 psi tensile strength, align with industrial durability expectations for reliable performance in technical applications.