The Thread Thread - Tap and Die Sizes

warpedmephisto · 09-19-2006, 10:29 PM

1/8"-27 Npt

Pyroswmr · 09-19-2006, 11:05 PM

..i dunno.. the threaded part is at least 5/16" wide...

Pyroswmr · 09-19-2006, 11:07 PM

..but mabie im just wrong.. im new to taps and dies and all that..

or perhaps

..no.. actually i'd just side on the fact that i have no idea what all of the little numbers mean

thanks for that quick reply

cockerstar · 09-19-2006, 11:44 PM

the actual air part on the firring is 1/8 inch big. the taped hole will be bigger than 1/8. its a plumbers thing.

warpedmephisto · 09-19-2006, 11:52 PM

Correct, the actual male part of the fitting is larger than 1/8" in diameter, but the fractional number in NPT (national pipe taper) threads is not the diameter of the fitting, but rather some other reference (to what escapes me right now). Trust me, nearly ALL (especially all newer items) paintball air hose stuff is 1/8"-27 NPT. If you go to the hardware store and look at that tap, you'll see that its larger in diameter than 1/8" and is tapered.

sloonan · 09-21-2006, 07:00 AM

Sorry if this has been asked already, but if it has I couldn't find the answer, what would be the size I need for a Tippmann 98C barrel?

cockerstar · 09-29-2006, 06:44 PM

what for? im not sure of the size but i know that it will be expensive if they even make one. they are pretty massive threads...

JoshGrrrr · 09-29-2006, 07:41 PM

I'm pretty sure Tippman's use multiple lead threads. That means that instead of one continuous thread, it is actually 2 or 3 threads. Both have their own start point and end point. The reason they do this is because the barrel screws in twice as far per rotation than with single lead threads. For example, if it were 10 threads per inch it would take 10 turns to make the barrel screw in 1 inch. If it were a double lead thread it would only take 5 turns, triple lead would only take 3.3 turns of the barrel to move the barrel in an inch.

Aren't tippman threads also acme or square threads? I don't remember them being normal 60° threads. If so, a tap will be very hard to find. A multiple lead acme or square thread tap will most likely be impossible to find.

robbieisurfriend · 09-29-2006, 10:20 PM

arent they just casted in the receiver halves? They would be VERY hard to recreate i would say.

JoshGrrrr · 09-29-2006, 10:22 PM

I'm sure they are.

baldusi · 09-30-2006, 09:21 AM

It might be an ACME with OD 1" and TPI 5, or a Metric 25x5.0. I would hace said ACME since the TPI was very close to TPI 5 (that's a metric pitch of 5.08mm vs a metric of 5.00mm. That's just a 0.003" difference). But I measured an OD of 25.00mm when it should have been 25.40mm, a 0.015" difference).

abr5 · 10-07-2006, 04:59 PM

i bought a 10-32 die to thread a pump arm for a halfblocked cocker, and its not working at all. the die will get halfway onto the old threads, then stop, and nothing i do can make it go further. I also tried on a cut piece of pump arm w/o threads and it won't even start to cut the metal. any help?

also, i tried it on one of my broken pump arms, and it worked fine, cept i need it on the one pump arm its not working on

warpedmephisto · 10-07-2006, 06:04 PM

What diameter rod are you using and what type of material is it? Dies have a taper start on them - make sure you're running the tapered end on first. Use some type of cutting oil and secure the rod in a vise or chuck of some type to keep it rigid. Then try to run the die on with a die wrench to get some more leverage.

abr5 · 10-07-2006, 06:11 PM

Quote:

Originally Posted by warpedmephisto

What diameter rod are you using and what type of material is it? Dies have a taper start on them - make sure you're running the tapered end on first. Use some type of cutting oil and secure the rod in a vise or chuck of some type to keep it rigid. Then try to run the die on with a die wrench to get some more leverage.

i've tried all of that. it is either brushed aluminum or stainless steel. it is a 3/8" rod, as is the one i was able to thread. I am going to run out to home depot and see if they have any stainless steel or aluminum rods 3/16" in diameter that i can use to make my own pump arm.

edit- i went to home depot, got some steel, and made my own pump arm

I_EAT_NOOBS · 10-17-2006, 04:01 PM

Tippmann 98c Velity screw?

abr5 · 11-03-2006, 05:48 PM

Anyone know the Timmy trigger pin threads, and the clamshell screw threads?

Jcody · 11-04-2006, 07:31 PM

Volumizers? Any out there with a 1/8" npt or smaller thread size?

baldusi · 11-04-2006, 10:02 PM

Quote:

Originally Posted by I_EAT_NOOBS

Tippmann 98c Velity screw?

5/16"-24 x 1/2" Length Setscrew, Cup Point, Black Oxide Finish Or 18-8 S.S., Use 5/32 Hex Key

warpedmephisto · 11-04-2006, 10:32 PM

Quote:

Originally Posted by abr5

Anyone know the Timmy trigger pin threads, and the clamshell screw threads?

Trigger pin threads are 10-32 (off the top of my head, so you'll probably want to double-check) and the clamshell screw threads are 4-40 (again, off the top of my head, double-check).

Jcody - volumizers for paintguns usually come in a (proprietary) straight thread size, not a pipe taper thread. If you need a volumizer to thread, say, into an ASA or something else with a pipe taper thread, Clippard makes some volumizers just for that application.

Jcody · 11-05-2006, 02:50 PM

Thank you. Do you mean these: http://www.clippard.com/store/displa...p?sku=AVT-17-3 ?

I can tap any thread i want into the part, it isnt an asa, but would i be able to find a tap for the volumizers (for paintball guns) thread?

warpedmephisto · 11-05-2006, 04:28 PM

Yeah, those are what I was talking about.

Just off the top of my head Tribal volumizers are .808"-28 which a 13/16"-28 tap isn't hard to come by and would do the job.

From www.haveblue.org/tech:

Impulse volumizers are 1"-16.

Angel volumizers are M19x0.75 (roughly 0.748"-34 in English units)

Spyder volumizers are some metric thread...

What tools do you have at your disposal to work with?