[Shop-talk] Weird machine screw

[Matt Trebelhorn]

That was my reaction when I read this, too.  I've actually used a  
1/4-20 bolt (temporarily) in a tripod to retain a camera.

Is the Whitworth size just really close to the UNC size, and we can  
get away with the mismatch?

Matt

On 19 Feb, 2010, at 11:44 AM, pethier at comcast.net wrote:

>> The last common use of them that I'm
>> aware of is the thread on camera tripod fittings.
>
> Every camera I have ever had has been 1/4-20.