times since the counter was installed.
Fractions and Decimal Equivalents and
X-acto
(11 Nov 07)
See also the main HOBBY page
with HOBBIES - Miscellany and
AUTHENTICAST/Comet Metal Products.
See also Railroad Grades
and Scale and Gauge.
Although primarily intended for Z (1:220) scale with its 8VDC and 10VAC requirements,
you might benefit from Power - Volts, Amps, Watts for Z.
[for Z, especially, but for all small scales, including HO,
this is critically important!]
Go to HOBBIES and SPECIAL INTERESTS on my Home Page 2 to see many of my other interests, such as these with their own pages:
Comet Metal Products Authenticast Models Page.
Strombeck-Becker StromBecKer Model Kits Page.
Erector sets.
Meccano and Dinky Toys models.
RAILROADS, et seq..
ALCo Love Song.
ALCO-GE-IR Boxcabs, et seq.
Brooklyn Eastern District Terminal RR (BEDT).
EMD - Electro-Motive Division of GM - models, etc.,
LONG ISLAND RAIL ROAD Page, et seq.
Railroad Grades
Model Railroad Photography
Model Railroading Miscellany.
Z-Scale (1:220) and the Berlinerwerke-Z Saga
Berlinerwerke Apocrypha (tall tales) and
Berlinerwerke Apocrypha Page 2 (more tall tales).
Berlinerwerke Guest Apocrypha (taller tales?):
HISTORICAL
Long Island Motor Parkway, et seq.
AUTOMOTIVE:
Automotive page - a cover and miscellaneous automotive apocrypha page.
Chrysler and Chrysler Continuation Pages.
Mercedes page.
SS and Jaguar Cars and SS and Jaguar Cars Continuation pages.
Civil War era Dudgeon Steam Automobile - still operable!
Tractors.
Road/Highway Schnabels (giant road loads/heavy haulers).
OTHER TECHNICAL AREAS
ORDNANCE page, et seq.
AVIATION page, et seq., and see
NAVAL & MARITIME page.
CULTURAL
Adirondack Mountains
.
Berliner Families - formerly including Emile and Henry Berliner [carbon microphone, disk
NATURE/ENVIRONMENT
see Adirondack Mountains (under "Culture", above).
ORCAS and other DOLPHINS and WHALES page.
as well as ULTRASONICS, RELIGION and PHILOSOPHY, etc.,
NOTE: This page may not be up to date; see the master index and the various indices on each major interest page.


DECIMAL EQUIVALENTS Effective Date: 24 Jan 2002
Original Date: 15 Jan 2002
Inch-Wire Decimal Inch-Wire Decimal Inch-Wire Decimal Inch-Wire Decimal
.1mm .0039 45 .0820 5 .2055 29/64 .453125
.2mm .0079 44 .0860 4 .2090 15/32 .46875
.3mm .0118 43 .0890 3 .2130 12mm .4724
80 .0135 42 .0935 7/32 .21875 31/64 .484375
79 .0145 3/32 .093875 2 .2210 1/2 .5000
1/64 .015625 41 .0960 1 .2280 13mm .5118
.4mm .0157 40 .0980 A .2349 33/64 .515625
78 .0160 39 .0995 15/64 .234375 17/32 .53125
77 .0180 38 .1015 6mm .2362 35/64 .546875
.5mm .0197 37 .1040 B .2380 14mm .5512
76 .0200 36 .1065 C .2420 9/16 .5625
75 .0210 7/64 .109375 D .2460 37/64 .578125
74 .0225 35 .1100 1/4 .2500 15mm .5906
.6mm .0236 34 .1110 F .2570 19/32 .59375
73 .0240 33 .1130 G .2610 39/64 .6094
72 .0250 32 .1160 17/64 .265625 5/8 .6250
71 .0260 3mm .1181 H .2660 16mm .6299
.7mm .0276 31 .1200 I .2720 41/64 .640625
70 .0280 1/8 .1250 7mm .2756 21/32 .65625
69 .0292 30 .1285 J .2770 17mm .6693
68 .0310 29 .1360 K .2810 43/64 .671875
1/32 .03125 28 .1405 9/32 .28125 11/16 .6875
.8mm .0315 9/64 .140625 L .2900 45/64 .703125
67 .0320 27 .1440 M .2950 18mm .7087
66 .0330 26 .1470 19/64 .296875 23/32 .71875
65 .0350 25 .1495 N .3020 47/64 .734375
.9mm .0354 24 .1520 5/16 .3125 19mm .7480
64 .0370 23 .1540 8mm .3150 3/4 .7500
63 .0370 5/32 .15625 O .3160 49/64 .765625
62 .0380 22 .1570 P .3230 25/32 .78125
61 .0394 4mm .1575 21/64 .328125 20mm .7874
1mm .0394 21 .1590 Q .3320 51/64 .796875
60 .0400 20 .1610 R .3390 13/16 .8125
59 .0410 19 .1660 11/32 .34375 21mm .8268
58 .0420 18 .1695 S .3480 53/64 .828125
57 .0430 11/64 .171875 9mm .3543 27/32 .84375
56 .0465 17 .1730 T .3580 55/64 .859375
3/64 .046875 16 .1770 23/64 .359375 22mm .8661
55 .0520 15 .1800 U .3680 7/8 .8750
54 .0550 14 .1820 3/8 .3750 57/64 .890625
53 .0595 13 .1850 V .3770 23mm .9055
1/16 .0625 3/16 .1875 W .3860 29/32 .90625
52 .0635 12 .1890 25/64 .390625 59/64 .921875
51 .0670 11 .1910 10mm .3937 15/16 .9375
50 .0700 10 .1935 X .3970 24mm .9449
49 .0730 9 .1960 Y .4040 61/64 .953125
48 .0760 5mm .1968 13/32 .40625 31/32 .96875
5/64 .078125 8 .1990 Z .4130 25mm .9842
47 .0785 7 .2010 27/64 .421875 63/64 .984375
2mm .07875 13/64 .203125 11mm .4331 1 1.0000
46 .0810 6 .2040 7/16 .4375
TAP DRILL SIZES Effective Date: 15 Jan 2002
Original Date: 15 Jan 2002
ENGLISH TAP DRILL SIZES
TAP TAP TAP
TAP PITCH DRILL TAP PITCH DRILL TAP PITCH DRILL
size /Form 75% size /Form 75% size /Form 75%
000-??? 1/4-20 NC 7 1-1/4-7 NC 1-7/64
00-90 -28 NF 3 -12 NF 1-11/64
0-80 NF 3/64 5/16-18 NC F 1-1/2-6 NC 1-11/32
1-64 NC 53 -24 NF I -12 NF 1-27/64
-72 NF 53 3/8-16 NC 5/16 1-3/4-5 NC 1-9/16
2-56 NC 50 -24 NF Q 2" -4½ NC 1-25/32
-64 NF 50 7/16-14 NC U 1/8-27 NPSC 11/32
3-48 NC 47 -20 NF 25/64 1/4-18 NPSC 7/16
-56 NF 45 1/2-13 NC 27/64 3/8-18 NPSC 37/64
4-40 NC 43 -20 NF 29/64 1/2-14 NPSC 23/32
-48 NF 42 9/16-12 NC 31/64 3/4-14 NPSC 59/64
5-40 NC 38 -18 NF 1/2 1"-11½ NPSC 1-5/32
-44 NF 37 5/8-11 NC 17/32 1-1/4-11½ NPSC 1-1/2
6-32 NC 36 -18 NF 9/16 1-1/2-11½ NPSC 1-3/4
-40 NF 33 11/16-11 NC 19/32 2" -11½ NPSC 2-7/32
8-32 NC 29 -16 NF 5/8 1/16-27 NPT/NPTF C
-36 NF 29 3/4-10 NC 21/32 1/8-27 NPT/NPTF Q
10-24 NC 25 -16 NF 11/16 1/4-18 NPT/NPTF 7/16
-32 NF 21 7/8-9 NC 49/64 3/8-18 NPT/NPTF 9/16
12-24 NC 16 -14 NF 51/64 1/2-14 NPT/NPTF 45/64
-28 NF 14 1" -8 NC 7/8 3/4-14 NPT/NPTF 29/32
-12 NF 59/64 1" -11½ NPT/NPTF 1-9/64
-14 NS 59/64 1-1/4-11½ NPT/NPTF 1-31/64
1-1/8 -7 NF 63/64 1-1/2-11½ NPT/NPTF 1-23/32
-12 NF 1-1/32 2" -11½ NPT/NPTF 2-3/16
METRIC TAP DRILL SIZES
SIZE PITCH DRILL INCH DRILL SIZE PITCH DRILL INCH DRILL SIZE PITCH DRILL INCH DRILL
MM MM MM EQUIV. INCH MM MM MM EQUIV. INCH MM MM MM EQUIV. INCH
M1.6 0.35 1.25 .049 - M6 1.0 5.0 .197 9 M16 2.0 14.0 .551 35/64
M2 0.4 1.6 .063 1/16 M7 1.0 6.0 .236 A M18 2.5 15.5 .610 39/64
M2.5 0.45 2.05 .081 46 M8 1.25 6.8 .266 17/64 M20 2.5 17.5 .689 11/16
M3 0.5 2.5 .098 40 M10 1.5 8.5 .335 Q M24 3.0 21.0 .827 53/64
M4 0.7 3.3 .130 30 M12 1.75 10.20 .402 Y M30 3.5 26.5 1.043 1-3/64
M5 0.8 4.2 .165 19 M14 2.0 12.0 .472 15/32 M36 4.0 32.0 1.260 1-17/64
(11 Nov 07)


Accurail produces among the finest HO and N freight car models, Kalmbach is one of the two top RR publishers, and Jeff gives us an unparalled access to old articles on models and prototypes; I strongly recommend Jeff's great work to you.
Also, Glenn Whitener has a great models index.
See also the main HOBBY page.
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To contact S. Berliner, III, please click here.
© Copyright S. Berliner, III - 1999, 2001, 2002, 2003, 2005, 2007 - All rights reserved.
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