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View Full Version : WTB/WTT/WTborrow: 1/2"-32 bottom tap



abunaitoo
11-23-2017, 07:31 PM
I need it just to chase some threads on a M1 Carbine gas block.
Would like to barrow one, but if someone has a spare to sell for cheap, that would work.
Have stuff to trade if needed.

Johnny_V
11-23-2017, 08:27 PM
After shipping both ways, it would be cheaper to buy one. Here's a link to one on eBay https://m.ebay.com/itm/1-2-32-GH3-HIGH-SPEED-STEEL-4-FLUTE-BOTTOM-TAP/222723407924?hash=item33db598034:g:hPAAAOSwVNxaD05 q

bedbugbilly
11-23-2017, 08:43 PM
I don't know how bad the threads are that you have to chase but if not that bad, you might be able to buy a 1/2" bolt with 32 thread pitch and chase them with the bolt. Otherwise, as stated above, you'd probably be better off $ wise to just buy at the tap you need.

abunaitoo
11-23-2017, 09:06 PM
Probably right about just buying one.
I'll probably use it only this one time.
For $18 I'll just order it.
Thanks

lightman
11-23-2017, 09:15 PM
I just went out to the shop to look. I have a few sets of taps and dies plus an assortment of extras but I don't have anything that fine. Sorry.

JBinMN
11-23-2017, 09:39 PM
I don't know how bad the threads are that you have to chase but if not that bad, you might be able to buy a 1/2" bolt with 32 thread pitch and chase them with the bolt. Otherwise, as stated above, you'd probably be better off $ wise to just buy at the tap you need.

If I could find a bolt, that is what I would do, rather than buying the tap. Take the bolt & grind a few tapered flats on it with a grinder, and then grind an angle on the tip to start would likely work. Much like a tap. Male threads cleaning up the female grooves while straightening any male threads in the hole & the craap in there comes out where ya ground the flats. Blow out , lube & blow again & maybe that would fix the issue without too much cost.

Otherwise ya could ask around at some machine or repair shops to see if they would help ya out for a few $$ or some beer or pizza or the like. Bribery may get ya some where... LOL
;)

Alstep
11-24-2017, 12:26 AM
Standard is 1/2-13 NC or 1/2-20 NF
1/2-32 is national special; not common hardware store stuff.
You can get one here at Travers tool, good people to deal with.
https://www.travers.com/search.aspx?keyword=1%2F2-32+tap

abunaitoo
11-24-2017, 06:43 PM
I just ordered the one on ebay.
Probably only use it once, but at least I'll have one if someone wants to borrow it.

dh2
11-25-2017, 09:34 PM
https://jet.com/product/detail/c13df5e0c1b84fc7a6d94d8c4a4ce418?jcmp=pla:bng:All% 20Products%20Catch%20All:All%20Products:na:PLA_112 586931_4372403789_kwd-4579946966786142_c:na:na:na:2PLA15&pid=kenshoo_int&c=112586931&is_retargeting=true&clickid=f5605099-8e12-40b5-9099-e9d74aed7104