what part is connected to this called? cant find the white knob thing ?

Wish I had a better answer 😐 It is called a thumb knob but you will not find it as individual part it is sold mounted to the faceplate as is the opening handle. I would suggest going to your local Re-Store/Habitat to hopefully find a used one, a new faceplate is around $200 from Anderson.

Is this one piece or two. When I inspect mine, the inch-long rectangular cylinder part comes out. Does that mean it is broken?

It is broken. return it for another one. The two pieces are supposed to be joined together from the factory. I'm a locksmith. I purchased one to replace a part that had separated on a customers door

Is this the part that springs the handle back in place when latching the 3 point lock. Right now my handle just sags but still locks.

No, this piece actually locks the turning knob. My knob kept turning and wouldn’t latch to lock. This fixed that issue.

I don't know if it is the Original Equipment Manufacturer but it does match the OEM part exactly and works very well.

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🔐 Upgrade your door’s heartbeat with precision locking power!

DURABLE METAL BUILD - Crafted from sturdy metal for long-lasting security
RELIABLE LOCK CONTROL - Ensures smooth deadbolt operation every time
EFFORTLESS INSTALLATION - Mounts quickly under escutcheon plate with just two screws
MAINTENANCE MADE SIMPLE - Replace actuator easily if deadbolt knob spins freely
UNIVERSAL COMPATIBILITY - Fits 400 Series Frenchwood Hinged Patio Doors (1988-present)

The Andersen Hinged Door Lock Actuator is a durable metal component designed for 400 Series Frenchwood Hinged Patio Doors from 1988 to present. Installed beneath the escutcheon plate and secured with two screws, it ensures smooth deadbolt rotation and reliable locking. Ideal for quick replacement when deadbolt knobs spin freely, this actuator guarantees lasting security and effortless maintenance.

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Material	Metal
Brand	Andersen Windows
Finish Type	Unfinished
Mounting Type	Door Mount
Unit Count	1.0 Count
Manufacturer	Andersen Windows, Inc.
UPC	749995700419
Part Number	2579542
Item Weight	0.32 ounces
Package Dimensions	4.02 x 1.85 x 0.39 inches
Item model number	2579542
Is Discontinued By Manufacturer	No
Finish	Unfinished
Item Package Quantity	1
Batteries Included?	No
Batteries Required?	No

Andersen Hinged Door Lock Actuator

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