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'[EE]: American standards??'
2002\02\18@151543 by Tal Bejerano - AMC

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Hi 2 All

I found many circuits that talking about "#16 wire" or "#8 Screws" "22 gauge
wire". what are this measurements?
where can I find converter for this measurements?

Thanks

Tal

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2002\02\18@161213 by M. Adam Davis

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They are measurements of wire size in AWG, or American Wire Guage.  You
can find a wire guage chart here:
http://www.cobrawire.com/charts.htm#AWG
Which gives the diameter of the wire in inches and millimeters, its
circular area, and weight.

To my (limited) knowledge, AWG is a fairly universal standard, though
this chart shows AWG, W&M, SWG, BWG, US Standard.
http://www.calfinewire.com/services/wirech.htm

-Adam


Tal Bejerano - AMC wrote:

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2002\02\18@161845 by Rick C.

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This should help you out.
http://www.askjeeves.com/main/metaAnswer.asp?t=m&s=a&en=directhit&o=0&frames=True&url=http%3A%2F%2Fask%2Edirecthit%2Ecom%2Ffcgi%2Dbin%2FRedirURL%2Efcg%3Furl%3Dhttp%3A%2F%2Fwww%2Ewireforming%2Ecom%2Fgauges%2Ehtml%26qry%3Dwire%2Bgauges%26rnk%3D1%26cz%3Dab7978d5786591df%26src%3DDH%5FASK%5FSRCH%26u%3D&ac=62&pt=Midwest+Wire+Products+%2D+Decimal+Equivalents+and+Wire+Gauges&dm=http%3A%2F%2Fwww%2Ewireforming%2Ecom%2Fgauges%2Ehtml&io=0&qid=EBE24B56D41EB54B950C565E6C45F80E&back=ask%3Dwire%2Bgauges%26o%3D0&ask=wire+gauges&dt=020218131458

The screw thread sizes are also listed on the right. i.e. #8 is 8-32, #10 is
10-32 or 10-24, etc.
Rick

Tal Bejerano - AMC wrote:

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2002\02\18@171421 by Giles

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As for screws.  2-56, 4-40, 6-32, ... are screws.
The second part stands for threads per inch.  So a 4-40 has 40 threads per inch.  I don't know what the 1st number means
THREAD/SCREW - Drill, Tap, & Clearance Hole Chart Information




     Machine Screw
     Size Threads
     Per Inch Minor
     Dia Tap Drills Clearance Hole Drills       Alum, Brass,
     & Plasitcs       75% Thread
    Stainless Steel,
     Steels & Iron       50% Thread
    All Materials       Close Fit Free Fit       # or Dia Major
     Dia Drill
     Size Decimal
     Equiv. Drill
     Size Decimal
     Equiv. Drill
     Size Decimal
     Equiv. Drill
     Size Decimal
     Equiv.       0 .0600 80 .0447 3/64 .0469 55 .0520 52 .0635 50 .0700       1 .0730 64 .0538 53 .0595 1/16 .0625 48 .0760 46 .0810       72 .0560 53 .0595 52 .0635       2 .0860 56 .0641 50 .0700 49 .0730 43 .0890 41 .0960       64 .0668 50 .0700 48 .0760       3 .0990 48 .0734 47 .0785 44 .0860 37 .1040 35 .1100       56 .0771 45 .0820 43 .0890       4 .1120 40 .0813 43 .0890 41 .0960 32 .1160 30 .1285       48 .0864 42 .0935 40 .0980       5 .125 40 .0943 38 .1015 7/64 .1094 30 .1285 29 .1360       44 .0971 37 .1040 35 .1100       6 .138 32 .0997 36 .1065 32 .1160 27 .1440 25 .1495       40 .1073 33 .1130 31 .1200       8 .1640 32 .1257 29 .1360 27 .1440 18 .1695 16 .1770       36 .1299 29 .1360 26 .1470       10 .1900 24 .1389 25 .1495 20 .1610 9 .1960 7 .2010       32 .1517 21 .1590 18 .1695       12 .2160 24 .1649 16 .1770 12 .1890 2 .2210 1 .2280       28 .1722 14 .1820 10 .1935       32 .1777 13 .1850 9 .1960       1/4 .2500 20 .1887 7 .2010 7/32 .2188 F .2570 H .2660       28 .2062 3 .2130 1 .2280       32 .2117 7/32 .2188 1 .2280       5/16 .3125 18 .2443 F .2570 J .2770 P .3230 Q .3320       24 .2614 I .2720 9/32 .2812       32 .2742 9/32 .2812 L .2900       3/8 .3750 16 .2983 5/16 .3125 Q .3320 W .3860 X .3970       24 .3239 Q .3320 S .3480       32 .3367 11/32 .3438 T .3580       7/16 .4375 14 .3499 U .3680 25/64 .3906 29/64 .4531 15/32 .4687       20 .3762 25/64 .3906 13/32 .4062       28 .3937 Y .4040 Z .4130       1/2 .5000 13 .4056 27/64 .4219 29/64 .4531 33/64 .5156 17/32 .5312
     20 .4387 29/64 .4531 15/32 .4688       28 .4562 15/32 .4688 15/32 .4688       9/16 .5625 12 .4603 31/64 .4844 33/64 .5156 37/64 .5781 19/32 .5938       18 .4943 33/64 .5156 17/32 .5312       24 .5114 33/64 .5156 17/32 .5312       5/8 .6250 11 .5135 17/32 .5312 9/16 .5625 41/64 .6406 21/32 .6562       18 .5568 37/64 .5781 19/32 .5938       24 .5739 37/64 .5781 19/32 .5938       11/16 .6875 24 .6364 41/64 .6406 21/32 .6562 45/64 .7031 23/32 .6562       3/4 .7500 10 .6273 21/32 .6562 11/16 .6875 49/64 .7656 25/32 .7812
     16 .6733 11/16 .6875 45/64 .7031       20 .6887 45/64 .7031 23/32 .7188       13/16 .8125 20 .7512 49/64 .7656 25/32 .7812 53/64 .8281 27/32 .8438       7/8 .8750 9 .7387 49/64 .7656 51/64 .7969 57/64 .8906 29/32 .9062       14 .7874 13/16 .8125 53/64 .8281       20 .8137 53/64 .8281 27/32 .8438       15/16 .9375 20 .8762 57/64 .8906 29/32 .9062 61/64 .9531 31/32 .9688       1 1.000 8 .8466 7/8 .8750 59/64 .9219 1-1/64 1.0156 1-1/32 1.0313       12 .8978 15/16 .9375 61/64 .9531       20 .9387 61/64 .9531 31/32 .9688       1-1/16 1.0625 18 .9943 1.000 1.000 1-1/64 1.0156 1-5/64 1.0781 1-3/32 1.0938       1-1/8 1.1250 7 .9497 63/64 .9844 1-1/32 1.0313 1-9/64 1.1406 1-5/32 1.1562       12 1.0228 1-3/64 1.0469 1-5/64 1.0781       18 1.0568 1-1/16 1.0625 1-5/64 1.0781       1-3/16 1.1875 18 1.1193 1-1/8 1.1250 1-9/64 1.1406 1-13/64 1.2031 1-7/32 1.2188       1-1/4
    1.2500
    7 1.0747 1-7/64 1.1094 1-5/32 1.1562 1-17/64
    1.2656
    1-9/32
    1.2812
          12 1.1478 1-11/64 1.1719 1-13/64 1.2031       18 1.1818 1-3/16 1.1875 1-13/64 1.2031       1-5/16 1.3125 18 1.2443 1-1/4 1.2500 1-17/64 1.2656 1-21/64 1.3281 1-11/32 1.3438       1-3/8 1.3750 6 1.1705 1-7/32 1.2187 1-17/64 1.2656 1-25/64 1.3906 1-13/32 1.4062       12 1.2728 1-19/64 1.2969 1-21/64 1.3281       18 1.3068 1-5/16 1.3125 1-21/64 1.3281       1-7/16 1.4375 18 1.3693 1-3/8 1.3750 1-25/64 1.3906 1-29/64 1.4531 1-15/32 1.4688       1-1/2 1.500 6 1.2955 1-11/32 1.3437 1-25/64 1.3906 1-33/64 1.5156 1-17/32 1.5312       12 1.3978 1-27/64 1.4219 1-7/16 1.4375       18 1.4318 1-7/16 1.4375 1-29/64 1.4531       1-9/16 1.5625 18 1.4943 1-12 1.500 1-33/64 1.5156 1-37/64 1.5781 1-19/32 1.5938       1-5/8 1.625 18 1.5568 1-9/16 1.5625 1-37/64 1.5781 1-41/64 1.6406 1-21/32 1.6562       1-11/16 1.6875 18 1.6193 1-5/8 1.6250 1-41/64 1.6406 1-45/64 1.7031 1-23/32 1.7188       1-3/4 1.750 5 1.5046 1-9/16 1.5625 1-5/8 1.6250 1-49/64 1.7659 1-25/32 1.7812

I can help with drill sizes.
The decimal is in inches




     NUMBER DRILL SIZES                   No. Decimal equiv. No. Decimal equiv. No. Decimal equiv. No. Decimal equiv.       1 0.2280 21 0.1590 41 0.0960 61 0.0390       2 0.2210 22 0.1570 42 0.0935 62 0.0380       3 0.2130 23 0.1540 43 0.0890 63 0.0370       4 0.2090 24 0.1520 44 0.0860 64 0.0360       5 0.2055 25 0.1495 45 0.0820 65 0.0350       6 0.2040 26 0.1470 46 0.0810 66 0.0330       7 0.2010 27 0.1440 47 0.0785 67 0.0320       8 0.1990 28 0.1405 48 0.0760 68 0.0310       9 0.1960 29 0.1360 49 0.0730 69 0.02925       10 0.1935 30 0.1285 50 0.0700 70 0.0280       11 0.1910 31 0.1200 51 0.0670 71 0.0260       12 0.1890 32 0.1160 52 0.0635 72 0.0250       13 0.1850 33 0.1130 53 0.0595 73 0.0240       14 0.1820 34 0.1110 54 0.0550 74 0.0225       15 0.1800 35 0.1100 55 0.0520 75 0.0210       16 0.1770 36 0.1065 56 0.0465 76 0.0200       17 0.1730 37 0.1040 57 0.0430 77 0.0180       18 0.1695 38 0.1015 58 0.0420 78 0.0160       19 0.1660 39 0.0995 59 0.0410 79 0.0145       20 0.1610 40 0.0980 60 0.0400 80 0.0135                                                

     LETTER DRILL SIZES                        A 0.234 N 0.302           B 0.238 O 0.316           C 0.242 P 0.323           D 0.246 Q 0.331           E 0.250 R 0.339           F 0.257 S 0.348           G 0.261 T 0.358           H 0.266 U 0.368           I 0.272 V 0.377           J 0.277 W 0.386           K 0.281 X 0.397           L 0.290 Y 0.404           M 0.295 Z 0.413    

{Original Message removed}

2002\02\18@173250 by Martin Peach

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The screw system is definitely not the same as the wire system: smaller
screw numbers correspond to smaller screw diameters. Smaller wire numbers
mean thicker wire. Why they don't use pecks and rods to measure things I
just don't know ;-) Why don't they just say 1mm wire when they mean 1mm wire
for instance....these are supposed to be engineers -- oh wait -- I think I
know why.

/\/\/\/*=Martin

{Original Message removed}

2002\02\18@174949 by Giles

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Martin,
I thought I might have trouble sending a HTML table.
Well anyway, as for "why?"
I would say it has something to do with .... conversion chart printers
lobbyists.
As for conversion in the US, everyone I know (engineering) has charts stuck,
hung up, in a drawer, all over the place.
With my tools, I always keep in mind that
13mm ~ 1/2"
11mm ~ 7/16"
19mm ~ 3/4"
and my crescent wrench is metric on one side and "American" on the other.

:)
Best regards,
Giles

{Original Message removed}

2002\02\19@083903 by Anthony Bussan

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The screw sizes are easy.  The # represents the major diameter of the the
screw in inches.  Which is # multiplied by .013 + .060.
So,
#8 --> 8*.013+.060=.164 inch major diameter.

Don't know an easy one for the wire though.

Tony



{Original Message removed}

2002\02\19@112441 by Martin Peach

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That's so easy I nearly stumbled across it in a dream! Who would have
guessed? Multiply by 0.13 and add 0.60. And they sure look like
_significant_ numbers too. I bet they relate to the number of steps on the
pyramid of Cheops.
/\/\/\/*=Martin

----- Original Message -----
From: "Anthony Bussan" <spam_OUTTBUSSATakeThisOuTspamWOODWARD.COM>
To: <.....PICLISTKILLspamspam@spam@MITVMA.MIT.EDU>
Sent: Tuesday, February 19, 2002 8:35 AM
Subject: Re: [EE]: American standards??


{Quote hidden}

> {Original Message removed}

2002\02\19@113255 by Amaury Jacquot

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On Tue, Feb 19, 2002 at 11:23:41AM -0500, Martin Peach wrote:
> That's so easy I nearly stumbled across it in a dream! Who would have
> guessed? Multiply by 0.13 and add 0.60. And they sure look like
> _significant_ numbers too. I bet they relate to the number of steps on the
> pyramid of Cheops.
> /\/\/\/*=Martin

hahaha
reminds me of how volumes are measured (gallons (british/american), cups
pints and all ;-)

Amaury

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2002\02\19@151723 by Bob Barr

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On Tue, 19 Feb 2002 17:31:19 +0100, Amaury Jacquot wrote:

>
>hahaha
>reminds me of how volumes are measured (gallons (british/american), cups
>pints and all ;-)
>

Many years ago, my father was surprised by the high price of gas in
Canada (about 20% more) but figured it was worth it because the car
got much higher gas mileage (also about 20% higher). :=)

Regards, Bob

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