S-91273A367 M4 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments
• High mechanical strength with 70,000 psi tensile and 35,000 psi shear strength for reliable load-bearing applications
• Precise thread engagement with Class 5g6g thread fit ensuring consistent mating with nuts and threaded holes
• Secure tool engagement through hex socket drive with 2mm size, preventing cam-out during installation
• Accurate component alignment with 12mm shoulder length and tight diameter tolerance for precise positioning
• Enhanced grip and handling with knurled head texture for easier manual adjustments in confined spaces
• Environmental compliance meeting RoHS 3 and REACH standards for global manufacturing applications

Professional Applications & Engineering Value

This M4 shoulder screw delivers critical engineering value in precision assembly applications where component alignment and corrosion resistance are paramount. The 18-8 stainless steel construction provides excellent durability against moisture, chemicals, and temperature variations, while the Class 5g6g thread fit ensures reliable fastening in automated assembly systems. The 12mm shoulder length with tight diameter tolerance serves as a precision locating feature in machinery, bearings, and rotating assemblies, eliminating the need for additional alignment components. The hex socket drive with 2mm size enables high-torque installation in space-constrained applications, making these metric shoulder screws ideal for robotics, automation equipment, and precision instrument manufacturing where vibration resistance and positional accuracy are critical requirements.

Specification Summary & Compliance

Manufactured to exacting metric standards with M4 x 0.7mm coarse thread and Class 5g6g thread fit tolerance. Shoulder diameter maintains -0.04 to -0.01 mm tolerance with shoulder length tolerance of 0 to 0.25 mm for precision applications. Material hardness rated at Rockwell B55 with mechanical properties including 70,000 psi tensile strength and 35,000 psi minimum shear strength. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations for industrial use.