What size hole to drill?

Archive BatchPCB
1

I have some pins that I’ve measured to be about 1.8mm / 0.71". What size drill should I use? I’d like a fairly snug fit.

In particular, are the drill sizes are before through-hole plating or after through-hole plating. Also, is there a list of the standard drills that are available at batchpcb, and whether a hole size will be rounded up or rounded down to the next available drill?

Thanks,

Scott

2

Unless they state otherwise, you can assume that hole diameters are finished size, after plating. Olimex is the only PCB supplier I know of that uses hole size before plating.

Holes are usually rounded to the nearest standard mm drill.

3

leon_heller:
Holes are usually rounded to the nearest standard mm drill.

Is there a list of standard mm drills somewhere? I’m also curious whether they round up or down (my guess would be up).