S-92957A190 M4 Shoulder Screws

Key Features & Benefits at a Glance

• Effortless manual installation with knurled thumb head and 2.5mm hex drive for tool-free or tool-assisted tightening in confined spaces
• Superior corrosion resistance thanks to 18-8 stainless steel construction, ensuring long-term reliability in harsh industrial environments
• Precise component alignment enabled by the precisely machined shoulder with controlled diameter and length tolerances
• High mechanical strength with Rockwell B83 hardness and 70,000 psi tensile strength to withstand significant operational loads
• Reliable thread engagement with Class 6g thread fit and coarse M4x0.7mm pitch for quick assembly and vibration resistance
• Enhanced grip and comfort from the raised round head profile with knurled texture, reducing hand fatigue during repeated adjustments
• Global compliance assurance meeting RoHS 3 and REACH environmental standards for safe use in regulated industries

Professional Applications & Engineering Value

This M4 shoulder screw delivers critical engineering value in applications requiring precise axial positioning and frequent manual adjustments. The 18-8 stainless steel material provides excellent corrosion resistance for machinery exposed to moisture, chemicals, or outdoor elements. The knurled thumb head combined with hex drive offers dual installation methods, solving accessibility challenges in electronic enclosures, optical equipment, and production jigs where tools may be impractical. The precise shoulder acts as a reliable locating datum, eliminating component misalignment in assemblies while the Class 6g thread fit ensures consistent engagement in threaded inserts and plates. These features make it ideal for industrial thumb screw applications in manufacturing, automation, and instrumentation where reliability and ease of maintenance are paramount.

Specification Summary & Compliance

This precision shoulder screw features M4x0.7mm coarse metric thread with Class 6g tolerance and 5mm thread length. The shoulder maintains precise dimensions with diameter tolerance of -0.025 to 0 mm and length tolerance of 0 to 0.05 mm. Manufactured from 18-8 stainless steel with Rockwell B83 hardness and 70,000 psi tensile strength. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations for industrial use.