S-91273A363 M4 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments and washdown applications
• Precise component alignment enabled by the 7mm shoulder diameter with tight tolerance control for reduced assembly vibration
• High-strength performance delivering 70,000 psi tensile strength and Rockwell B55 hardness for demanding mechanical applications
• Secure torque transmission through the 2mm hex socket drive combined with knurled head for slip-resistant installation
• Reliable thread engagement with Class 5g6g thread fit ensuring consistent fastening performance in metric assemblies
• Quick installation efficiency featuring coarse M4 x 0.7mm right-hand threads for rapid assembly in high-volume production
• Environmental compliance assurance meeting RoHS 3 and REACH standards for global manufacturing requirements

Professional Applications & Engineering Value

This precision shoulder screw delivers critical engineering solutions across industrial automation, machinery manufacturing, and precision instrument assembly. The 18-8 stainless steel composition provides excellent corrosion resistance while maintaining structural integrity in demanding environments. The 7mm shoulder length with controlled diameter tolerance serves as a precision locating feature, eliminating component misalignment in rotating assemblies and bearing applications. The hex socket drive with 2mm drive size enables high-torque installation in confined spaces, while the knurled head texture prevents tool slippage during automated assembly processes. The M4 x 0.7mm coarse thread configuration ensures rapid installation without cross-threading, making it ideal for high-volume manufacturing environments where reliability and speed are paramount.

Specification Summary & Compliance

This metric shoulder screw features precision Class 5g6g thread fit according to ISO metric standards, with shoulder diameter tolerance of -0.04 to -0.01 mm and shoulder length tolerance of 0 to 0.25 mm for consistent dimensional accuracy. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring material safety and regulatory compliance for global industrial applications. The right-hand thread direction with coarse thread spacing follows standard metric threading conventions for universal compatibility.