Fitting swivel studs

[molsal]

Hi, how do you select the correct size drill bit to drill the pilot holes when fitting swivel studs?

many thank's in advance.

[u.k.neil]

Hi, how do you select the correct size drill bit to drill the pilot holes when fitting swivel studs?

many thank's in advance.

Measure the screw root diameter:-

http://s16.photobucket.com/user/UK_N...441e1.jpg.html


Get a drill same size as root or very slightly larger:-


http://s16.photobucket.com/user/UK_N...e8ed2.jpg.html



Drill hole:-


http://s16.photobucket.com/user/UK_N...528ad.jpg.html


Neil

[angrybear]

If you don't have a vernier just hold it up to the light & "eye it" you want a bit just a fraction thinner than the screw shank.

Put masking tape on to mark the hole, it also helps stop the drill bit sliding on the wood.

[Biker_Bob]

I've always used a 4mm drill bit.