Hole size for bolt

Bill

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Oct 27, 2003, 7:44:23 AM10/27/03

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What size hole does a 10mm headed bolt need to go through, is a normal 10 mm
headed bolt M6 or M8?

I don't have access at the moment to any to measure.

Cheers

Bill

sweller

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Oct 27, 2003, 7:54:05 AM10/27/03

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Bill wrote:

> What size hole does a 10mm headed bolt need to go through, is a normal
> 10 mm headed bolt M6 or M8?

Shank size Thread Spanner
Pitch Size
M6 (6mm) 1.00mm 10mm
M8 (8mm) 1.25mm 13mm (12mm on some Japanese bolts)
M10 (10mm) 1.50mm 17mm
M12 (12mm) 1.75mm 19mm

Tapping Drill Size = Screw Diameter - Thread Pitch (rule of thumb).
For the shank hole, I'd use an oversize drill bit about 0.5 mm

HTH

--
Simon

Brighton | MYSOB: http://www.sweller.co.uk/sob/
England | MZSOB: http://www.mztech.fsnet.co.uk/

Bill

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Oct 27, 2003, 8:00:40 AM10/27/03

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"sweller" <n...@mztech.fsnet.co.uk> wrote in message
news:bnj4hc$11e3nv$1...@ID-144385.news.uni-berlin.de...

> Bill wrote:
>
> > What size hole does a 10mm headed bolt need to go through, is a normal
> > 10 mm headed bolt M6 or M8?
>
> Shank size Thread Spanner
> Pitch Size
> M6 (6mm) 1.00mm 10mm
> M8 (8mm) 1.25mm 13mm (12mm on some Japanese bolts)
> M10 (10mm) 1.50mm 17mm
> M12 (12mm) 1.75mm 19mm
>
> Tapping Drill Size = Screw Diameter - Thread Pitch (rule of thumb).
> For the shank hole, I'd use an oversize drill bit about 0.5 mm

Brilliant, cheers

Bill

Slider

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Oct 27, 2003, 8:00:30 AM10/27/03

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"Bill" <barna...@hotmail.com> wrote in message
news:bnj3u9$1242g4$1...@ID-139518.news.uni-berlin.de

> What size hole does a 10mm headed bolt need to go through, is a
> normal 10 mm headed bolt M6 or M8?
>

The clue is in the '6' and '8'. M6 = 6mm, can you guess what M10 is? ;-)

--
Steve "Slider"
'02 YZF-R6

Slider

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Oct 27, 2003, 8:01:23 AM10/27/03

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"Slider" <st...@somewhere.invalid.com> wrote in message
news:OF8nb.3749959$Bf5.5...@news.easynews.com

>> What size hole does a 10mm headed bolt need to go through, is a
>> normal 10 mm headed bolt M6 or M8?
>>
> The clue is in the '6' and '8'. M6 = 6mm, can you guess what M10 is?
> ;-)

D'oh; ignore that. Fools rush in etc...

mb

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Oct 27, 2003, 11:13:22 AM10/27/03

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"Bill" <barna...@hotmail.com> wrote in message

news:bnj3u9$1242g4$1...@ID-139518.news.uni-berlin.de...

Bolts with a 10mm head are *normally* M6.

--
Mike
FJ1200 (Porky Torquey)
GTS1000 (Two rear ends)

Dr Ivan D. Reid

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Oct 27, 2003, 11:31:36 AM10/27/03

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On 27 Oct 2003 12:54:05 GMT, sweller <n...@mztech.fsnet.co.uk>
wrote in <bnj4hc$11e3nv$1...@ID-144385.news.uni-berlin.de>:
> Bill wrote:

>> What size hole does a 10mm headed bolt need to go through, is a normal
>> 10 mm headed bolt M6 or M8?

> Shank size Thread Spanner
> Pitch Size
> M6 (6mm) 1.00mm 10mm
> M8 (8mm) 1.25mm 13mm (12mm on some Japanese bolts)
> M10 (10mm) 1.50mm 17mm

I think you'll find most Japanese M10s are 14 mm AF -- certainly
Suzuki spammer sizes are 10, 12, and 14 mm AF. Yamaha often use 13 mm
for M8 tho'.

> M12 (12mm) 1.75mm 19mm

> Tapping Drill Size = Screw Diameter - Thread Pitch (rule of thumb).
> For the shank hole, I'd use an oversize drill bit about 0.5 mm

--
Ivan Reid, Electronic & Computer Engineering, ___ CMS Collaboration,
Brunel University. Ivan...@brunel.ac.uk Room 40-1-B12, CERN
GSX600F, RG250WD. "You Porsche. Me pass!" DoD #484 JKLO# 003, 005
WP7# 3000 LC Unit #2368 (tinlc) UKMC#00009 BOTAFOT#16 UKRMMA#7 (Hon)
KotPT -- "for stupidity above and beyond the call of duty".