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Old 9th of April 2007 (Mon)   #1
perfect_pixel
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Question Quarter inch in metric?(thread size for tripod mount)

Hi,

Probably a really simple question but I've been to three DIY stores and can't find a bolt that will fit into the tripod mount on the bottom of my camera.

I know it is a standard quarter inch thread but can anyone tell me what I should be looking for in metric terms and how many threads per inch it is?

Thanks in advance !


Steve
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Old 9th of April 2007 (Mon)   #2
Michael
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Default Re: Quarter inch in metric?

1 Inch is 2.54 cm, or 254 mm.
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Old 9th of April 2007 (Mon)   #3
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Default Re: Quarter inch in metric?

So, you are looking for a 63.5mm thread??
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Old 9th of April 2007 (Mon)   #4
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Default Re: Quarter inch in metric?

The thread in all modern camera bottoms is 1/4 -20.

This is a very common bolt. You need to find a better store! Maybe your threads are damaged. A 1/4 -20 should go right in.
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Old 9th of April 2007 (Mon)   #5
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Default Re: Quarter inch in metric?

Thanks for the quick replies...

So I would be looking (in metric terms) for a 63.5mm diameter bolt with 7.87 threads per centimetre (20 threads per inch)?

Does anyone know what this equates to in terms of M3, M4, M5, M6 or which of THESE it would be.

Something so simple and I am completely lost.....

The stores I tried were B&Q, Focus and Homebase I even took my grip along and opened the packets to try them at the first two. I was popular when I walked out with nothing !

Thanks again,

Steve
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Old 9th of April 2007 (Mon)   #6
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Default Re: Quarter inch in metric?

I'm not sure why you'd need a metric bolt since the threads in your camera are NOT metric.
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Old 9th of April 2007 (Mon)   #7
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Default Re: Quarter inch in metric?

Having worked in the hardware department of a Home Depot here, I don't think there is a standard metric bolt that is an exact match for a 1/4-20 thread. My suggestion would be to see if you could order it from a US supplier on-line.

IMO, one of the dumbest things the United States ever did was NOT adopting the metric system...
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Old 9th of April 2007 (Mon)   #8
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Default Re: Quarter inch in metric?

Quote:
Originally Posted by cosworth View Post
I'm not sure why you'd need a metric bolt since the threads in your camera are NOT metric.
Because I live in a metric country where even market traders get fined for showing weights in imperial...

Every bolt I have seen (even online) is described in metric and are what I assume are standardised sizes (i.e. the M4, M5 etc).

If I am completely missing the point then please tell me and if anyone can point me in the right direction for getting some then p l e a s e do - this is beginning to take over my life!!

Steve
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Old 9th of April 2007 (Mon)   #9
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Default Re: Quarter inch in metric?

You are missing the point. I live in a metric coutry as well and it's DEAD EASY for me to find a 1/4- 20 bolt, nut etc. It's quite possibly the most common standard size.

I think you are looking in the wrong spot. Your local fasterner supplier will set you up. Maybe your local machine shop can point you in the right direction if you can't locate them in the phone book.
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Old 9th of April 2007 (Mon)   #10
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Default Re: Quarter inch in metric?

Seriously, whether you're in a metric-only country or not, you're going to need to find a 1/4"-20 thread screw. There is no metric descriptor.
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Old 9th of April 2007 (Mon)   #11
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Default Re: Quarter inch in metric?

Okay, thanks again for the help everyone. If there is no metric equivalent then I will try a smaller non-superstore-chain shop and see what they have - as Cosworth says I must be looking in the wrong place with the larger stores.

Thanks,

Steve
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Old 9th of April 2007 (Mon)   #12
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Default Re: Quarter inch in metric?

Quote:
Originally Posted by Sinkrate View Post
1 Inch is 2.54 cm, or 254 mm.
Close. It's 25.4 mm to an inch.
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Old 9th of April 2007 (Mon)   #13
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Default Re: Quarter inch in metric?

Hi Steve,

It may be a daft question, but ... why do you need a bolt to go into the Tripod mount of your camera?

You may be better off looking in camera stores, they will have all sorts of camera mountings, as you may find something that you can adapt. Something like a cheap quick release plate or the like in an oddments bin.

Or perhaps a boot fair.

Regards
Nigel

Last edited by Nanscombe : 9th of April 2007 (Mon) at 13:39.
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Old 9th of April 2007 (Mon)   #14
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Default Re: Quarter inch in metric?

Quote:
Originally Posted by SimonG View Post
Close. It's 25.4 mm to an inch.
I was about to say...
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Old 9th of April 2007 (Mon)   #15
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Default Re: Quarter inch in metric?

Quote:
Originally Posted by Sinkrate View Post
1 Inch is 2.54 cm, or 254 mm.
u Ouisses needs to rework on some issues, nhf mate
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