S-90269A541 M4 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh industrial environments
• Exceptional mechanical strength with 70,000 PSI tensile strength and 35,000 PSI shear strength for reliable load-bearing applications
• Precision dimensional accuracy with Class 5g6g thread fit and tight shoulder tolerances ensuring consistent assembly performance
• Easy installation and maintenance with standard hex socket drive requiring only 3mm hex key for secure fastening
• Enhanced durability with Rockwell B79 hardness providing excellent wear resistance in dynamic applications
• Regulatory compliance assurance meeting RoHS 3 and REACH standards for environmentally responsible manufacturing
• Versatile shoulder design with 20mm smooth shoulder length providing precise component spacing and alignment

Professional Applications & Engineering Value

This M4 shoulder screw in 316 stainless steel addresses critical engineering challenges in precision assemblies where corrosion resistance and dimensional stability are paramount. The metric coarse thread (M4 x 0.7mm) with Class 5g6g fit ensures secure fastening in vibrating environments, while the 20mm shoulder length with controlled tolerances provides accurate component positioning in machinery, automation systems, and precision instruments. The hex socket drive design allows for high-torque installation in confined spaces, making these industrial shoulder screws ideal for applications requiring repeated disassembly and maintenance. The combination of high tensile strength and corrosion resistance makes them particularly valuable in chemical processing, marine equipment, and food processing machinery where both mechanical performance and environmental durability are essential.

Specification Summary & Compliance

This precision shoulder screw features M4 x 0.7mm metric coarse threads with Class 5g6g thread fit tolerance, ensuring consistent threading performance. The shoulder diameter maintains tight tolerance of -0.072 to -0.01 mm while the shoulder length tolerance is controlled within 0 to 0.25 mm for precise component alignment. Manufactured from 316 stainless steel with Rockwell B79 hardness, the fastener delivers reliable mechanical properties across demanding applications. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, meeting the latest industry standards for restricted substances and chemical safety.