drill bit sized explained

psd99 · 15 Jan 2011 at 16:38

hi guys I need a 3/16" drill bit for my tv wall mount

also says I need a 1/2" inch masonry bit

+

wrench

firstly could I get away with not having a wrench and instead using a spanner?

secondly for the drill bit - what do the numbers 3/16" really mean?

(diameter? lenght?? - the actual length of my bolts are just under 7mm.

thanks

Greenlizard0 · 15 Jan 2011 at 16:40

No quick! Everybody post in here.

The Halk · 15 Jan 2011 at 16:40

3/16" is imperial measure, it means 3 16ths of an inch.

J.B · 15 Jan 2011 at 16:40

Its the width of the bit I thought, as in diameter. So three sixteenths of an inch. That's probably wrong but that's what I've always thought

Edit:
The Halk beet me to it and said it in a more assertive and certain way!

PardonTheWait · 15 Jan 2011 at 16:40

It's fractions of inches, apparently 3/16in is 4.7mm

Half inch is... half an inch! 12.7mm

it's the width of the bit. Find your dad, he's probably got a load of imperial stuff lying around anyway

JBuk · 15 Jan 2011 at 16:41

3/16" is the diameter of the drill across the cutting edges, size is in inches, equiv is 4.76mm

the 1/2" is 12.7mm

psd99 · 15 Jan 2011 at 16:41

thanks what about the length? are they not mentioned?

Deadbeat · 15 Jan 2011 at 16:42

Your google-fu is weak.

Edit:

stulid · 15 Jan 2011 at 16:42

maths fail!!!

psd99 · 15 Jan 2011 at 16:42

next questions

what's the difference between

3/16" drill bit and 1/2" masonry bit?

going into blocks

JBuk · 15 Jan 2011 at 16:43

psd99 said:
next questions

what's the difference between

3/16" drill bit and 1/2" masonry bit?

going into blocks

1/2" is a lot bigger

use masonry bits to drill into brick & mortar, wood drills or augers for wood and high speed steel or carbide coated for steel & wood

stulid · 15 Jan 2011 at 16:43

psd99 said:
thanks what about the length? are they not mentioned?

drill as deep as the supplied wall plugs/srews

The Halk · 15 Jan 2011 at 16:43

One is 3/16ths of an inch and one is half an inch.

One is a masonry bit, and I don't know what the other is. Most likely wood if it's not specified.

mangobreeder · 15 Jan 2011 at 16:44

psd99 said:
next questions

what's the difference between

3/16" drill bit and 1/2" masonry bit?

going into blocks

masonry bit has a harder tip for drilling into masonry

stulid · 15 Jan 2011 at 16:44

Should you be doing DIY?

JBuk · 15 Jan 2011 at 16:44

psd99 said:
thanks what about the length? are they not mentioned?

no, you go in as deep as you need

if your holes need to be 50mm deep then make sure your drill bit is long enough to hit that depth

PardonTheWait · 15 Jan 2011 at 16:45

Also, a wrench is a spanner

Abraxaz1 · 15 Jan 2011 at 16:46

activate your trust mat and ill send you somehting very usefull for this

psd99 · 15 Jan 2011 at 16:46

cheers - yer so it is masonry (blocks)

I'm going to check out the m8 coach screws first if they are needed in the blocks

then I need to get the correct drill bit -

Abraxaz1 · 15 Jan 2011 at 16:48

bugger it if i get banned i get banned
http://www.green-oval.com/data/zeus.pdf

all the info you could possibly want