RED Bottom Plate attachment screw size

[JessH]

Anyone know what size threads these are? I am talking about the socket cap bolts visible in this picture: http://provideocoalition.com/images/uploads/ARO-DSC_1523.jpg

I am contemplating attaching a square to round rod to this attachment point in order to mount a wireless follow focus motor when not using the bottom plate.

Thanks,
Jess

 

[Michael Hastings]

Jess those are standard 1/4-20 (quarter inch x 20 threads per inch) very common in the us and the same as on almost every camera/camcorder

BTW The large one on the bottom is 3/8-16 also very common in US and the other standard size for larger cameras.

 

[JessH]

I knew the ones on the bottom were 1/4-20 and 3/8-16. So you are understanding me correctly and the ones on the side(not the bottom) that are used to attach the RED piece that the shoulder mount goes into are 1/4-20 as well? I am talking about the ones that have bolts in them in my picture not the open holes on the bottom.

~Jess

 

[Yevgeny Gultaev]

Those bolts with 1/4-20 and 3/8-16 thread.
Which kind of thread used on them?
Is it NC (National Coarse Thread)?

 

[Larry McKee]

Jess, the ones on the side with the bolts in them are 1/4-20 - same as the ones on the bottom.

 

[Michael Hastings]

I knew the ones on the bottom were 1/4-20 and 3/8-16. So you are understanding me correctly and the ones on the side(not the bottom) that are used to attach the RED piece that the shoulder mount goes into are 1/4-20 as well? I am talking about the ones that have bolts in them in my picture not the open holes on the bottom.

~Jess

Yes, the sides are 1/4-20 also.

Those bolts with 1/4-20 and 3/8-16 thread.
Which kind of thread used on them?
Is it NC (National Coarse Thread)?

Yes, they are both national coarse. (NF-National fine would be 1/4-28 and 3/8-24)

 

[Jarred Land]

if your planning on using custom bolts for those side holes.. be careful. many of people have tried to do the same and went too long and ended up screwing right into the fans

 

[Yevgeny Gultaev]

if your planning on using custom bolts for those side holes.. be careful. many of people have tried to do the same and went too long and ended up screwing right into the fans

Nice note, thank you! :wink5:


Where can I find info about all thread sizes used on RED ONE?