Question Re: Drill Size Instructions

[Jeff Wright]

I am installing Blum Tandem Blumotion drawer slides. They require a small hole drilled on the back of the drawer to receive a prong on the slide mechanism. They specify a hole as 1/4"x3/8". Do you know (with certainty) whether they mean a 1/4" hole drilled 3/8" deep OR a 3/8" drill 1/4" deep. Knowing the correct answer will insure that I install the slide in a manner that allows me to adjust the slide properly once installed. Thanks.

[Steve Jenkins]

1/4" hole 3/8 deep. If you measure the prong that fits into it it's just under 1/4" wide.

[Jeff Wright]

Thanks Steve. Your answer matches some instructions I later found on the internet.

[Ron Jones near Indy]

1/4" hole 3/8 deep. If you measure the prong that fits into it it's just under 1/4" wide.
Diameter is given first and then the depth.