Bridgeport 12190344 Quick Nut Assembly Milling Machine

Product Description

The BRIDGEPORT 12190344 is a Quick Nut Assembly designed as a replacement hardware component for I Series milling machines. This assembly fits within the 2J and J-Head lower housing, providing the mechanical interface needed to maintain accurate quill and spindle feed engagement. Licensed machine tool technicians and millwrights install this part during routine maintenance or component replacement on Bridgeport-style knee mills. The 12190344 is an OEM-specification part, ensuring correct thread engagement and fitment without modification.

This Quick Nut Assembly is intended for use on Bridgeport I Series milling machines, specifically the 2J and J-Head lower housing configurations. It is a common wear and service component on vertical knee mills found in machine shops, maintenance facilities, and vocational training environments. Replacement is typically required when the existing nut assembly shows thread wear, stripping, or loss of precise quill depth control.

Key Features

• Designed specifically for 2J and J-Head lower housing on Bridgeport I Series mills
• OEM-specification Quick Nut Assembly for accurate thread engagement and quill control
• Direct replacement part — no modification required for proper fitment
• Sold as a single assembly (package quantity of 1)

Compatibility

Compatible with Bridgeport I Series milling machines using the 2J and J-Head lower housing configuration.

Installation Notes

Installation of this assembly should be performed by a qualified machine tool technician or millwright. Power down and lock out the milling machine at the main disconnect before beginning any disassembly of the lower housing or quill feed components. Use proper hand tools rated for precision machine work and avoid impact tools that could damage threaded surfaces. Verify thread engagement and quill movement are within normal operating range before returning the machine to service.