2420 Screws

[maxserg]

Hi Bruno

For a 2410;

The 3 screws ( machine bolts ) for the diaphragm are #6-32 by 3/4" long ( or @ 19 mm long )

The 2 screws ( machine bolts ) for the back-cap are #8-32 by 1.5" long ( or @38 mm long )

For a 2420/1; Don't have one to measure

For a 2426;

The 3 screws ( machine bolts ) for the diaphragm are #6-32 by 3/4" long ( or @ 19 mm long )

The 3 screws ( machine bolts ) for the back-cap are #8-32 by .5" long ( or @ 13 mm long )

The bolts that hold in the diaphragm should be nonmagnetic ( brass ) - if you can find them .

regards <> Earl K

for the 2420, bolts are 8/32- 1-1/4 inch