Size of screw thread on Manfrotto/Bogen 503 at DVinfo.net

Paul Jefferies · December 28th, 2006, 02:50 PM

Hi,
Can anyone tell me what size the screw thread is, where the pan bar/arm screws onto the tripod head? I want to try attaching another accessory onto the head using this screw thread but I'm having difficulty finding the correct screw size

James Stone · January 8th, 2007, 09:39 AM

It's a 1/4 x 20 bolt. I'm doing the same thing by mounting my 5" LCD monitor to it.

Paul Jefferies · January 8th, 2007, 02:30 PM

Thanks James

Steve Leverich · January 8th, 2007, 03:38 PM

Unless the 503 head is different from my 501, the bolt that holds the pan bar onto the head (thru the toothed rosetta clamp) is a 8mm x 1.25mm pitch bolt. I just recently went thru this when building a "sled" to mount my microtrack recorder to the un-used side of the head. The only 1/4-20 thread I've found on the 501 head is the one that screws into the camera to hold it to the quick-connect dovetailed slide.

As I mentioned though, mine is a 501; looking at B&H site, that part looks the same... Steve

Denis Danatzko · January 8th, 2007, 04:34 PM

Quote:

Originally Posted by Paul Jefferies

Hi,
Can anyone tell me what size the screw thread is, where the pan bar/arm screws onto the tripod head? I want to try attaching another accessory onto the head using this screw thread but I'm having difficulty finding the correct screw size

...if that info was included in the meager documentation that comes with the head? I've also considered using the screw hole identified as an "M10" size to attach things at the top of the single leg-frame, but I'm not sure what "M10" means. At least the documentation mentions that the hole is for a carry strap.

Personally, I can't understand why Bogen/Manfrotto finds it so hard to include that in the printed material.

If you find the correct size, please report back. I'd certainly be interested in knowing what it is.

Bill Ravens · January 9th, 2007, 07:50 AM

M10 means metric 10mm-there are 2 pitch sizes to metric threads. get both at the hardware store to validate which thread pitch. I would assume it's the coarse thread.

Denis Danatzko · January 9th, 2007, 08:38 AM

Quote:

Originally Posted by Bill Ravens

M10 means metric 10mm-there are 2 pitch sizes to metric threads. get both at the hardware store to validate which thread pitch. I would assume it's the coarse thread.

That's a big help. Now I hope to be able to fashion some sort of connection for peripherals. I think I'd rather attach a small monitor with that screw instead of a typical shoe mount.

If others have done the same, I'd appreciate photos of how it was done.

December 28th, 2006, 02:50 PM	#1
Paul Jefferies Major Player Join Date: Nov 2005 Location: Croydon, England Posts: 277	Size of screw thread on Manfrotto/Bogen 503 Hi, Can anyone tell me what size the screw thread is, where the pan bar/arm screws onto the tripod head? I want to try attaching another accessory onto the head using this screw thread but I'm having difficulty finding the correct screw size

January 8th, 2007, 09:39 AM	#2
James Stone Regular Crew Join Date: Dec 2004 Location: San Jose, Ca Posts: 40	It's a 1/4 x 20 bolt. I'm doing the same thing by mounting my 5" LCD monitor to it.

January 8th, 2007, 02:30 PM	#3
Paul Jefferies Major Player Join Date: Nov 2005 Location: Croydon, England Posts: 277	Thanks James

January 8th, 2007, 03:38 PM	#4
Steve Leverich Regular Crew Join Date: Sep 2006 Location: Albany Oregon Posts: 173	Unless the 503 head is different from my 501, the bolt that holds the pan bar onto the head (thru the toothed rosetta clamp) is a 8mm x 1.25mm pitch bolt. I just recently went thru this when building a "sled" to mount my microtrack recorder to the un-used side of the head. The only 1/4-20 thread I've found on the 501 head is the one that screws into the camera to hold it to the quick-connect dovetailed slide. As I mentioned though, mine is a 501; looking at B&H site, that part looks the same... Steve

January 9th, 2007, 07:50 AM	#6
Bill Ravens Join Date: Nov 2001 Location: santa fe, nm Posts: 3,264 Images: 10	M10 means metric 10mm-there are 2 pitch sizes to metric threads. get both at the hardware store to validate which thread pitch. I would assume it's the coarse thread.