Whats the distance between the mounting studs/screws?

It is about 40mm on the face of the door facing the frame.

Hi i bought this but im having a problem taking key out of the door only comes out when you lock door does key come out without locking ??

yes it comes out without locking. Try some WD40 to make the lock mechanism easier to work. Also, the hole that you drilled for the barrel of the lock needs extra chopping at at the bottom of the cylinder. This because there is a plastic arm that opens when you turn the key and which needs more space. If you have not removed extra wood below the barrel of the lock it may cause the lock to jam.

Manufacturer	Qrity
Part Number	B0BBQRB2C6
Product Dimensions	5.6 x 5.6 x 1.1 cm; 453.59 g
Item model number	AL04
Colour	Sliver-a
Style	Fashion
Finish	Zinc
Material	Zinc
Shape	Round
Number of Pieces	2
Special Features	Durable
Included Components	1 x Cylinder Deadbolt Lock, 1 x Latch, 1 x Strike plate, 3 x keys, Mounting screws
Batteries included?	No
Batteries Required?	No
Item Weight	454 g

Qrity Single Cylinder Round Deadbolt Lock with Keys, Modern Zinc Alloy Security Lock for Front Entrance Passage Door

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