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Nauticam housing specific question


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#1 pmerc

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Posted 10 April 2013 - 07:39 PM

Hi All, 

 

On the underside of my 7D housing there are 3 threaded holes presumably to attach a tripod to.

Anyone know the thread info for these?

Just wanted to possibly confirm it could be a 1/4" UNC....

UNC seems be a hard one to find, but I would think this is the standard size for camera tripod mounts as well.

Also could UNC be called something else overseas?

 

Please correct me if I am mistaken.

 

Thanks!

 

Cheers,

Phil

 

 

P.S.  I am unsure if other housings have the same tripod mount hence the title.



#2 pmooney

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Posted 11 April 2013 - 01:03 AM

1/4 inch -  20 threads per inch - 1/4 UNC 

 

Available at any bolt / hardware store.

 

Try the old fashioned way  - Townville Fasteners    07 4257799


Edited by pmooney, 11 April 2013 - 01:03 AM.


#3 pmerc

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Posted 11 April 2013 - 01:55 AM

1/4 inch -  20 threads per inch - 1/4 UNC 

 

Available at any bolt / hardware store.

 

Try the old fashioned way  - Townville Fasteners    07 4257799

 

Thanks Peter,  Tried Bolt Masters and while they had the 1/4 UNC they only had 3/4 long for some reason in 316.

No worries at all, I found an online place and hedged my bets.

Appreciate the reply!

Cheers,

Phil



#4 MiVo

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Posted 16 May 2013 - 10:02 PM

If it is the same thread as in camera it is NOT 1/4 UNC but 1/4 BSW (i.e. Whitworth thread, see http://en.wikipedia....ndard_Whitworth

). The difference is the thread angle which in UNC and metric threads is 60° but in BSW is 55°. If you put a 1/4 UNC screw into the camera you quite

probable ruin the thread at least partially.

 

Regards,

 

Mikko



#5 pmerc

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Posted 18 May 2013 - 07:06 PM

THanks Mikko, I was able to start to screw in the UNC threaded bolts but met with some resistance so did not continue.

Better to err on the side of caution that either cross thread them or screw up the mount.

I'll try to order the BSW bolts for a try.

Much appreciated!