Replacement Spindle Square Drive System for Mortise Door Knobs (2 Pack)

This replacement spindle is specifically designed for antique-style door knob systems. Featuring a 1/4 inch square drive with custom 3/8 inch - 20 threading, this spindle is essential for vintage style door knobs and mortise lock systems. The zinc plated steel construction ensures durability and longevity.

The nominal size of the spindle measures 1/4 inch x 1/4 inch x 3-1/2 inch. However, the actual size is slightly larger at 17/64 inch x 17/64 inch x 3-1/2 inch. This square spindle is compatible with 9/32 inch and 5/16 inch square openings, but please note that it will not fit into 1/4 inch square drives.

To ensure a secure attachment of your door handle to this spindle, it is recommended to apply a mid-grade adhesive to the tips of the threading. This will help "lock" the handle in place and prevent any unwanted movement.

Before purchasing, please refer to the line art drawing for detailed dimensions. Compare these dimensions with your specific needs to ensure a proper fit for your door knob system. Upgrade your vintage-style door knobs with this high-quality replacement spindle for a secure and reliable door operation.

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