Re: [FWDLK] Fw: Left hand lug nuts

[David Charles Gedraitis <dcg@xxxxxxx>]

The propane tank has left handed threads because all flammable gases gases
have left-handed threads. I don't know why this is, but I'm told it's to
keep one from messing up too badly when you have multiple tanks that go
together-if they had the same threads the regulators could go on backwards
and you'd get the entirely wrong mixture. Anyone have any thoughts on
that?

~dave

On Mon, 31 Mar 2003, fins59 wrote:

> The arbor screw holding the saw blade on my compound miter saw has left handed threads and the bolt holding the blade on my radial arm saw has left handed threads.   Also your propane tank for your gas grill has a left handed thread. I can understand why the saws have them but why propane tanks?    (My '61 Willy's Jeep also has lefthanded lugs on drivers side)    John Z
>   ----- Original Message -----
>   From: Ron Vest
>   To: L-FORWARDLOOK@xxxxxxxxxxxxx
>   Sent: Monday, March 31, 2003 12:33 PM
>   Subject: Re: [FWDLK] Fw: Left hand lug nuts
>
>
>
>   Wayne & Jim,
>   I used to run a manufacturing plant where we provided parts to G.E. (Jet Engine Division), Pratt & Whitney, (Jet and Piston Engines), Rolls Royce Engines, Hawker Siddeley, Bell Helicopter, Sikorsky, North American Aviation, Thiokol, United Aircraft Ltd, and most all Gear/transmission manufacturers.
>   I can tell you unequivocally, left hand threads are very common, and in VERY high quality applications. The examples I have given here are the highest quality of mechanical components known to man ... NO exaggeration!
>   Ron ...
>
>
>   In a message dated 3/31/2003 12:12:48 PM Central Standard Time, wgraefen@xxxxxxxxxxxxxx writes:
>
>
>
>     ----- Original Message ----- From: Jim McMullan
>     Sent: Monday, March 31, 2003 12:00 PM
>     Subject: RE: [Chrysler300] Left hand lug nuts
>
>
>
>     So the guy has not seen application where left hand threads were required! He should to talk to G.E. or Prat & Whitney or Westinghouse.-Rolls Roice ect. When you are assembling turbines whit rotating masses that way over 800 lbs you torque the nuts up to 3000 lbs foot and stretch them 100 degres.And yes some are left hand.The torque and stretch are called out in the book and you better pay attenshion.Feel free to forward to list.Jim McMullan 300F
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