On Friday 08 February 2013 04:02:44 andy pugh did opine: Message additions Copyright Friday 08 February 2013 by Gene Heskett
> On 8 February 2013 07:21, Gene Heskett <ghesk...@wdtv.com> wrote: > > Does anyone know the tpi or tpmm of those miniature zerks on Chinese > > ball nuts is? Its 5.75mm for the major thread diameter, so I assume > > they might be able to call it a 6mm thread, but it is obviously a > > coarser tpmm than the 6x1mm's bolts I have. > > 12-20? I don't think my tap collection includes that one, and #12 screws seem to have become an endangered specie over the last 50 years. ISTR one of the ancient equipment racks we have at the tv station was tapped 12-24 & it took Ace Hdwe about 6 weeks to find me a box of them 25 years ago. I have some 6x1mm bolts, I'll clean one up and see if it will fit the hole. If that flies, I might try to bore a socket head to 1/4-28, run a #60 drill thru it and use an American fitting. I also have not stopped at NAPA, where, due to the metrification of the auto industry here, they may have a 6mm zerk with an American sized head on it. The chinese versions head is about 0.021" smaller OD, and a different profile that doesn't even try to fit our grease gun sockets. No place in my touring last evening had a grease gun tip for the std 1/8" pipe grease guns that had any mention of the word metric on the blister pack card. Frankly, my country is becoming a fossilized 3rd world island, Zimbabwe is the only other holdout to all metric. I think the word is PIMA? IMO, tooling wears out, and when it wears out, replace it with metric equ's and be done with it. But some fossil like me in a corner office that represents TPTB, can't think in metric. Don't these folks ever retire? > No metric threads in that size are coarser than 1mm. Good to know, thanks Andy. Cheers, Gene -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) My web page: <http://coyoteden.dyndns-free.com:85/gene> is up! My views <http://www.armchairpatriot.com/What%20Has%20America%20Become.shtml> Q: How do you save a drowning lawyer? A: Throw him a rock. I was taught to respect my elders, but its getting harder and harder to find any... ------------------------------------------------------------------------------ Free Next-Gen Firewall Hardware Offer Buy your Sophos next-gen firewall before the end March 2013 and get the hardware for free! Learn more. http://p.sf.net/sfu/sophos-d2d-feb _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
