Auto Clocker experts plz

[Snowpuff]

So I know there is 2 main thread sizes for the 3 way and solniod barbs 10/32 and 6/40 .BUT what is the thread pitch like npt or unc or what? .

I want to drill and tap these tiny bad boys
But I just bought these barbs off some guy not sure the thread size , he has no clue what they come off of .. they seem to be bigger tha the wpg solniod barbs by one size.. not sure how I'm going to figure out it's size,
Is it possible to take micrometer and measure that way?

[Snowpuff]

10/32 have diameter or 4.76 okay figured it out

[Snowpuff]

But guys what is the thread pitch? NPT or UNC?

[Toestr]

NPT threads are tapered threads meant for pipes (stands for National Pipe Thread). The tapering of the threads mean they crush together and seal via interference. Teflon tape or pipe dope is typically used as a lubricant to get the threads to turn and crush more easily but isn't actually required to make the threads seal. Almost every paintball air fitting will have 1/8 NPT threads.

[Toestr]

#10-32 and #6-40 are both UNF (fine thread). UNC and UNF are ways to describe how coarse the threads are for a given diameter Imperial machine thread fastener. For the examples you gave #s 10 and 6 would be the diameter of the fastener; 32 and 40 would be the thread pitch measured in threads per inch (TPI). They are both fine threads because the threading is less coarse than #10-24 and #6-32 fasteners respectively. There may be multiple UNC and UNF thread pitches for a given fastener diameter but there is typically only one commonly available for both fine and coarse in that diameter.

The easiest thing for you to do would be either compare the barbs with a fastener known to be the same size (Autococker frame mounting screws and cocking rods are #10-32) or take it to a hardware store and compare to the fastener guides they have there. #6-40 isn't common but the diameter with be very similar to #6-32 which they should have.

There are charts online that will give specs on threads dimensions which you could compare with measurements from a caliper. Ideally you would use a thread gauge or thread die set to check. Once you've got some experience you can usually tell the size just by looking at the fastener. Until you get a metric one and everything is awful.

[Snowpuff]

Thank you oh great tap master