Screw size of HC-SR04 Sonar Sensor

Please tell me the screw size of HC-SR04 Sonar Sensor , I'm searching on the google but I couldn't find it .

Don't you have a box of drill bits.
Try which shank fits the hole.

Well, I blew the picture up to full screen and measured across the 4 pins which I know is 7.62mm and measured 41mm, so the picture is 41 / 7.62 = 5.38 times larger than real. Measured a hole at close to 9mm, so 9 / 5.38 = 1.67, I'd use a 1.5mm screw.

Thanks @outsider :slight_smile: .