Square D 9001SK41 Pushbutton Switch Ring Nut 30 Mm

Product Description

The SQUARE D 9001SK41 is a replacement ring nut designed for securing 30 mm pushbutton operator heads to control station enclosures and panel cutouts. This small but critical hardware component threads onto the mounting bushing of the pushbutton body, locking the operator in place and maintaining a secure, vibration-resistant fit in industrial control panels. Constructed from aluminum and zinc, it provides corrosion resistance appropriate for control panel environments. Electricians and panel builders install this ring nut during new panel assembly or when replacing a damaged fastener on an existing pushbutton station. It ships as a single unit and is a direct OEM-style replacement part.

This ring nut is used in industrial and commercial control panel applications wherever Harmony series 30 mm pushbutton operators are installed. Typical install scenarios include motor control centers, machine control stations, and operator interface panels requiring a secure operator mounting. It is compatible with a defined range of Harmony pushbutton and pilot light series listed by SQUARE D, making it a common service and maintenance stock item for electricians working on legacy and current-generation control stations.

Key Features

• Fits 30 mm Harmony pushbutton and pilot light operators for broad serviceability
• Aluminum and zinc construction provides durability and corrosion resistance
• Compact profile at 1 inch length, 1 inch width, and 0.5 inches height
• OEM replacement part — maintains original fit and holding force
• Single-unit packaging allows precise quantity ordering for service calls

Compatibility

Compatible with Harmony 9001K, 9001SK, and 9001KX 30 mm Pushbuttons; SKP Pilot Lights; SKR1, SKR12, SKR4, SKR5, SKR9, and SKRU11 Pushbuttons; and SKTR Pilot Lights.

Installation Notes

Installation is performed by licensed electricians or qualified control panel technicians. De-energize and lock out the control panel per NFPA 70E requirements before servicing any pushbutton station. Thread the ring nut onto the operator bushing by hand first, then snug with the appropriate spanner or strap wrench — do not overtighten, as the aluminum and zinc construction can be damaged by excessive torque. Verify the operator is fully seated and the ring nut is flush against the panel surface before restoring power.