Description
Welcome to Well-Tech - one of the leading manufacturers and suppliers of PCB products in China. Our factory is engaged in PCB manufacturing and offering customized fr4 pcb with counterbore holes enig plating 6 layer board at competitive price. High reliability, strong diversity and expert advice are our characteristics. Please contact us if you have inquiry.
Products description:
Countersink holes PCB (counterbore PCB): A common usage of countersink or counterbore holes is to permit the tapered head of a screw to sit flush with the top or bottom of the laminate. The cone angle is typically 82 or 90 or 135 degrees.
Products specification:
Layers: 6
Material /Laminate: FR4 TG150
Board thickness: 2.0mm
Copper weight: inner & outer 1oz
Finishing: ENIG
|
Typically, the countersink hole has 3 types degree, 82°, 90° and 135°. |
|
Parameter for countersink hole as below, |
|
1.
Countersink hole size is less than 6.5mm can be drilled normally, if
the hole size more than 6.5mm, then need to expand the drill, the size
controlled by +/-0.15mm. |
