What is this?
These computer CPU water cooling head fixing screws are used to fix the water cooling head to the main board.The M4 water cooler head screws are widely applicable to the CPU water block.

What will I get?
Thread diameter: M4
Thread Pitch: 0.7mm/0.03inch
Screw diameter: 4mm/0.16inch
Thread length: 30mm/1.18inch
Total length: 32mm/1.26inch
Material: iron
Surface: galvanized
Accessories: hexagon nut screw knurled nut with gasket

Is there any advantages of the product?
The surface of water cooling head screw is galvanized making it more durable.The iron material offers more powerful and corrosion resistance.The knurled surface adds feel and friction,making it easier to install and remove.

How to use it?
Fasten the screw through the gasket to the back of the main board,on the front of the main board, first pass the gasket through the screw, and then pass the small thread nut through the screw,insert cold head through screw, install spring, install large nut.

What should I notice?
Please check the size carefully to make sure you can use it for your water cooler block, processor,CPU,GPU.Don't screw too tight or too loose,make sure it is in normal working condition.