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the premier source of parts and accessories for mini lathes and mini mills

LittleMachineShop.com • (800) 981-9663

Tap & Clearance Drill Sizes Tap Drill Clearance Drill

75% Thread for Aluminum, Brass, &

Plastics

50% Thread for Steel, Stainless,

& Iron Close Fit Free Fit Screw

Size Major

Diameter Threads Per Inch

Minor Diameter

Drill Size Dec. Eq. Drill Size Dec. Eq. Drill Size Dec. Eq. Drill Size Dec. Eq. 0 .0600 80 .0447 3/64 .0469 55 .0520 52 .0635 50 .0700

64 .0538 53 .0595 1/16 .0625 1 .0730

72 .0560 53 .0595 52 .0635 48 .0760 46 .0810

56 .0641 50 .0700 49 .0730 2 .0860

64 .0668 50 .0700 48 .0760 43 .0890 41 .0960

48 .0734 47 .0785 44 .0860 3 .0990

56 .0771 45 .0820 43 .0890 37 .1040 35 .1100

40 .0813 43 .0890 41 .0960 4 .1120

48 .0864 42 .0935 40 .0980 32 .1160 30 .1285

40 .0943 38 .1015 7/64 .1094 5 .125

44 .0971 37 .1040 35 .1100 30 .1285 29 .1360

32 .0997 36 .1065 32 .1160 6 .138

40 .1073 33 .1130 31 .1200 27 .1440 25 .1495

32 .1257 29 .1360 27 .1440 8 .1640

36 .1299 29 .1360 26 .1470 18 .1695 16 .1770

24 .1389 25 .1495 20 .1610 10 .1900

32 .1517 21 .1590 18 .1695 9 .1960 7 .2010

24 .1649 16 .1770 12 .1890 28 .1722 14 .1820 10 .1935 12 .2160 32 .1777 13 .1850 9 .1960

2 .2210 1 .2280

20 .1887 7 .2010 7/32 .2188 28 .2062 3 .2130 1 .2280 1/4 .2500 32 .2117 7/32 .2188 1 .2280

F .2570 H .2660

18 .2443 F .2570 J .2770 24 .2614 I .2720 9/32 .2812 5/16 .3125 32 .2742 9/32 .2812 L .2900

P .3230 Q .3320

16 .2983 5/16 .3125 Q .3320 24 .3239 Q .3320 S .3480 3/8 .3750 32 .3367 11/32 .3438 T .3580

W .3860 X .3970

14 .3499 U .3680 25/64 .3906 20 .3762 25/64 .3906 13/32 .4062 7/16 .4375 28 .3937 Y .4040 Z .4130

29/64 .4531 15/32 .4687

13 .4056 27/64 .4219 29/64 .4531 20 .4387 29/64 .4531 15/32 .4688 1/2 .5000 28 .4562 15/32 .4688 15/32 .4688

33/64 .5156 17/32 .5312

12 .4603 31/64 .4844 33/64 .5156 18 .4943 33/64 .5156 17/32 .5312 9/16 .5625 24 .5114 33/64 .5156 17/32 .5312

37/64 .5781 19/32 .5938

11 .5135 17/32 .5312 9/16 .5625 18 .5568 37/64 .5781 19/32 .5938 5/8 .6250 24 .5739 37/64 .5781 19/32 .5938

41/64 .6406 21/32 .6562

11/16 .6875 24 .6364 41/64 .6406 21/32 .6562 45/64 .7031 23/32 .6562 10 .6273 21/32 .6562 11/16 .6875 16 .6733 11/16 .6875 45/64 .7031 3/4 .7500 20 .6887 45/64 .7031 23/32 .7188

49/64 .7656 25/32 .7812

13/16 .8125 20 .7512 49/64 .7656 25/32 .7812 53/64 .8281 27/32 .8438 9 .7387 49/64 .7656 51/64 .7969 14 .7874 13/16 .8125 53/64 .8281 7/8 .8750 20 .8137 53/64 .8281 27/32 .8438

57/64 .8906 29/32 .9062

15/16 .9375 20 .8762 57/64 .8906 29/32 .9062 61/64 .9531 31/32 .9688 8 .8466 7/8 .8750 59/64 .9219 12 .8978 15/16 .9375 61/64 .9531 1 1.000 20 .9387 61/64 .9531 31/32 .9688

1-1/64 1.0156 1-1/32 1.0313

Tap Drill Clearance Drill Metric Tap & Clearance Drill

Sizes

75% Thread for Aluminum, Brass,

& Plastics

50% Thread for Steel, Stainless,

& Iron Close Fit Standard Fit

Screw Size (mm)

Thread Pitch (mm)

Drill Size (mm)

Closest American

Drill

Drill Size (mm)

Closest American

Drill

Drill Size (mm)

Closest American

Drill

Drill Size (mm)

Closest American

Drill M1.5 0.35 1.15 56 1.25 55 1.60 1/16 1.65 52 M1.6 0.35 1.25 55 1.35 54 1.70 51 1.75 50 M 1.8 0.35 1.45 53 1.55 1/16 1.90 49 2.00 5/64

0.45 1.55 1/16 1.70 51 M 2

0.40 1.60 52 1.75 50 2.10 45 2.20 44

M 2.2 0.45 1.75 50 1.90 48 2.30 3/32 2.40 41 M 2.5 0.45 2.05 46 2.20 44 2.65 37 2.75 7/64

0.60 2.40 41 2.60 37 M 3

0.50 2.50 39 2.70 36 3.15 1/8 3.30 30

M 3.5 0.60 2.90 32 3.10 31 3.70 27 3.85 24 0.75 3.25 30 3.50 28

M 4 0.70 3.30 30 3.50 28

4.20 19 4.40 17

M 4.5 0.75 3.75 25 4.00 22 4.75 13 5.00 9 1.00 4.00 21 4.40 11/64 0.90 4.10 20 4.40 17 M 5 0.80 4.20 19 4.50 16

5.25 5 5.50 7/32

M 5.5 0.90 4.60 14 4.90 10 5.80 1 6.10 B 1.00 5.00 8 5.40 4

M 6 0.75 5.25 4 5.50 7/32

6.30 E 6.60 G

1.00 6.00 B 6.40 E M 7

0.75 6.25 D 6.50 F 7.40 L 7.70 N

1.25 6.80 H 7.20 J M 8

1.00 7.00 J 7.40 L 8.40 Q 8.80 S

1.25 7.80 N 8.20 P M 9

1.00 8.00 O 8.40 21/64 9.50 3/8 9.90 25/64

1.50 8.50 R 9.00 T 1.25 8.80 11/32 9.20 23/64 M 10 1.00 9.00 T 9.40 U

10.50 Z 11.00 7/16

M 11 1.50 9.50 3/8 10.00 X 11.60 29/64 12.10 15/32 1.75 10.30 13/32 10.90 27/64 1.50 10.50 Z 11.00 7/16 M 12 1.25 10.80 27/64 11.20 7/16

12.60 1/2 13.20 33/64

2.00 12.10 15/32 12.70 1/2 1.50 12.50 1/2 13.00 33/64 M 14 1.25 12.80 1/2 13.20 33/64

14.75 37/64 15.50 39/64

M 15 1.50 13.50 17/32 14.00 35/64 15.75 5/8 16.50 21/32 2.00 14.00 35/64 14.75 37/64

M 16 1.50 14.50 37/64 15.00 19/32

16.75 21/32 17.50 11/16

M 17 1.50 15.50 39/64 16.00 5/8 18.00 45/64 18.50 47/64 2.50 15.50 39/64 16.50 41/64 2.00 16.00 5/8 16.75 21/32 M 18 1.50 16.50 21/32 17.00 43/64

19.00 3/4 20.00 25/32

M 19 2.50 16.50 21/32 17.50 11/16 20.00 25/32 21.00 53/64 2.50 17.50 11/16 18.50 23/32 2.00 18.00 45/64 18.50 47/64 M 20 1.50 18.50 47/64 19.00 3/4

21.00 53/64 22.00 55/64

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Caliber Lee RCBS Lyman Hornady

10 mm 19 27 15 n/a

11 mm Mauser n/a 22 n/a n/a

17 Remington 4 10 26 16

218 Bee 6 1 n/a 7

219 Zipper 3 2 2 2

22 BR 2 n/a n/a n/a

22 Hornet 7 12 4 3

22 Hornet 20 12 4 3

22 K Hornet 7 12 n/a 3

22 K Hornet 20 12 n/a 3

22 Remington Jet 1 6 n/a 6

22 Savage 3 2 n/a n/a

22/250 2 3 2 1

220 Swift 10 11 5 4

221 Fireball 4 10 26 16

222 Remington 4 10 26 16

222 Remington Magnum 4 10 26 16

223 (5.56 mm) 4 10 26 16

224 Clark (22/257) 2 n/a n/a n/a

225 Winchester 10 n/a n/a 18

240 Weatherby 2 3 n/a n/a

243 Winchester 2 3 2 1

244 Remington 2 3 2 1

25 ACP 15 29 32 37

25/06 2 3 2 1

25/20 Winchester 6 1 10 7

25/284 2 n/a n/a n/a

25/35 3 2 n/a n/a

250 Savage 2 3 2 1

256 Winchester Magnum 1 n/a n/a 6

257 Roberts 2 3 2 1

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Shell Holder Cross Reference Chart

257 Roberts Improved 2 3 n/a n/a

257 Weatherby 5 4 n/a 5

260 Remington n/a 3 2 n/a

264 Winchester Magnum 5 4 n/a 5


270 Win S Mag 5 43 34 n/a


280 Remington 2 3 2 n/a

284 Winchester 2 3 n/a 1

30 BR 2 n/a n/a n/a

30 Herrett 3 n/a n/a n/a

30 Luger 19 1 12 8

30 Luger 6 1 12 8

30 M 1 Carbine 7 17 19 22

30 Mauser 6 1 12 n/a

30 Mauser 19 1 12 n/a

30 Remington n/a 19 n/a n/a

30-338 Win Mag n/a 4 n/a n/a

30-378 Weatherby Mag n/a 14 n/a n/a

30-40 Krag 5 7 n/a n/a

30/06 Springfield 2 3 2 1

30/30 Winchester(30 W.C.F.) 3 2 6 2

30/40 Krag (30 U.S.) 5 n/a n/a 11

300 H&H 5 4 n/a 5

300 Rem Short Ultra Mag n/a 38 13 n/a

300 Remington Ultra Mag n/a n/a 13 n/a

300 Savage 2 3 2 1

300 Ultra Magnum 5 38 n/a n/a

300 Weatherby 5 4 13 5

300 Win Short Magnum 5 43 34 n/a

300 Winchester Magnum 5 4 13 5

303 British 5 7 7 n/a

303 Savage n/a 21 n/a 33

303/25 5 n/a n/a n/a

307 Winchester 3 n/a 6 n/a

307 Winchester n/a 2 6 n/a

308 Norma Magnum 5 4 n/a n/a

308 Winchester(7.62 NATO) 2 3 2 1

32 ACP [Auto 7 17 23 22

32 ACP [Universal ] 7B 17 23 22

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Lee RCBS Lyman Hornady

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Typewritten Text

Caliber

32 Colt N.P. 4 n/a n/a n/a

32 H&R Mag n/a 23 9 n/a

32 Long Colt 4 n/a n/a n/a

32 S&W 4 n/a n/a 36

32 S&W Long 4 23 9 36

32 Short Colt 4 n/a n/a n/a

32 Winchester Special 3 2 6 2

32 WinchesterS.L. 3 n/a n/a n/a

32-40 WCF 3 2 n/a n/a

32/20 (32 W.C.F.) 6 1 10 n/a

32/40 Winchester 3 2 n/a n/a

33 Winchester 8 n/a n/a n/a

338 – 06 n/a 3 n/a n/a

338 Laupa n/a 14 n/a n/a

338 Remington Ultra Mag n/a n/a 13 n/a

338 Ultra Magnum 5 38 n/a n/a

338 Win Short Mag n/a 43 n/a n/a

338 Winchester Magnum 5 4 13 5


348 Winchester 8 5 n/a 25

35 Remington 2 9 2 26

35 Whelan 2 3 2 n/a


350 Remington Magnum 5 4 n/a 5

356 TSW n/a 1 n/a n/a

356 Winchester 3 2 6 n/a

357 Auto Magnum 2 n/a n/a n/a

357 Magnum 1 6 1 6

357 Maximum 1 6 1 6

358 Norma Magnum 5 n/a n/a n/a


375 H&H 5 4 13 5

375 Rem Ultra Mag 5 38 13 n/a

375 Weatherby 5 n/a n/a n/a

375 Winchester 3 2 6 n/a

376 Styer 11 42 n/a n/a

378 Weatherby Mag n/a 14 n/a n/a

38 ACP 19 n/a n/a n/a

38 ACP 6 n/a n/a n/a

38 Casull n/a 3 n/a n/a

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Caliber

38 Colt N.P. 1 n/a n/a n/a


38 S&W 1 6 21 28

38 Short Colt 1 n/a n/a n/a

38 Special 1 6 1 6

38 Super Auto 6 39 12 8

38 Super Auto 19 39 12 n/a

38/40 Winchester 14 35 n/a n/a

38/55 Winchester 3 2 6 2

380 Auto 4 10 26 16

40 S&W 19 27 15 n/a

40-65 Sharps n/a 14 17 n/a

40-70 Sharps Straight n/a n/a 33 n/a

40/82 Winchester 8 n/a n/a n/a

400 Corbon n/a 3 n/a n/a

404 Jeffery n/a 41 n/a n/a

405 Winchester n/a 24 n/a n/a


41 Action Express 6 n/a n/a n/a

41 Action Express 19 n/a n/a n/a


41 Magnum 9 30 30 29

416 Remington 5 4 n/a n/a

416 Rigby 8 37 17 n/a

43 Mauser 18 n/a n/a n/a

43 Spanish 17 22 n/a n/a

43 Spanish 17 n/a n/a n/a

44 Auto Magnum 2 n/a n/a n/a

44 Magnum 11 18 7 30

44 S&W Russian 11 18 n/a n/a

44 S&W Special 11 18 7 30

44/40 14 35 14B n/a

444 Marlin 11 28 14B 27

45 Auto (ACP) 2 3 2 1

45 Auto Rim 13 8 n/a n/a

45 Colt 14 20 11 32

45 Colt 11 20 11 32

45 Scholfield 11 n/a 14B n/a

45 Winchester Magnum 2A 36 2 n/a

45-100 n/a n/a 17 n/a

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Caliber

45-110 n/a n/a 17 n/a

45-120 n/a n/a 17 n/a

45-70 Government 8 14 17 14

45-90 n/a n/a 17 n/a

450 Marlin 5 4 13 n/a

454 Casull 11 20 11 n/a

455 Webley 5 38 n/a n/a

458 WinchesterMagnum 5 4 n/a 5

460 Weatherby Magnum n/a 14 n/a n/a

475 Linebaugh 5 40 n/a n/a

475 Wildy n/a n/a 2 n/a

480 Ruger 5 40 n/a n/a

5.6 x 50 Ri mmed n/a 6 1 n/a

50 Action Express 11 33 7 n/a

50-70 Government n/a 31 22 n/a

50-90 n/a n/a 22 n/a

500 S&W n/a 44 n/a n/a

6 mm 06 2 n/a n/a n/a

6 mm Int 'l 2 n/a n/a n/a

6 mm Remington 2 3 n/a n/a

6 mm/284 2 n/a n/a n/a

6 x 47 (6 mm/222M) 4 n/a n/a n/a

6.5 / 06 2 3 n/a n/a

6.5 Carcano 2 n/a n/a n/a

6.5 Jap 10 15 n/a n/a

6.5 Remington Magnum 5 n/a 5 n/a

6.5 x 54 Manlicher-Schoenauer n/a 9 n/a n/a

6.5 x 55 Mauser 3 2 27 n/a

6.5 x 57 2 3 2 n/a

6.5 x 57R Mauser n/a n/a 14B n/a

6.5 x 68S n/a 34 n/a n/a

7 mm BR 2 3 n/a n/a

7 mm Rem Short Ultra Mag n/a 38 n/a n/a

7 mm Remington Magnum 5 4 13 n/a

7 mm STW n/a 4 13 n/a

7 mm TCU 4 10 26 n/a

7 mm Ultra Mag 5 38 13 n/a

7 mm Weatherby 5 4 13 5

7 mm Win S Mag 5 43 n/a n/a

7 mm/08 2 3 2 1

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Caliber

7 x 30 Waters 3 2 6 n/a

7 x 57 mm Mauser 2 3 2 1

7 x 61 Sharpe&Hart 5 n/a n/a n/a

7 x 64 Brenneke n/a 3 2 n/a

7 x 65 Ri mmed n/a 26 14B n/a

7.5 mm Schmidt 3 2 n/a n/a

7.5 x 54 MAS n/a 2 n/a n/a

7.62 x 39 12 32 3 n/a

7.62 x 54 Russian 16 13 17 n/a

7.65 x 53 Arg.Mauser 3 n/a 2 n/a

7.65 x 53 Mauser 3 3 n/a n/a

7.7 Jap. 2 3 n/a n/a

7.9 x 57 n/a n/a 2 n/a

8 mm 06 2 3 n/a n/a

8 mm Lebel 17 1 n/a n/a

8 mm Man.Schoe. 2 3 n/a n/a

8 mm Nambu n/a 25 n/a n/a

8 mm Remington Magnum 5 4 13 5

8 mm x 68S Magnum n/a 34 n/a n/a

8 x 56R Hungarian 16 n/a n/a n/a

8 x 57 JRS n/a n/a 14B n/a

8 x 57 JS n/a n/a 2 n/a

8 x 57 Mauser 2 3 2 1

9 mm LUGER 19 1 12 8

9 mm LUGER 6 1 12 8

9 mm Mak n/a 1 12 n/a

9 x 21 19 1 12 8

9 x 23 19 1 12 8

9.3 mm x 74 Ri mmed n/a 4 n/a n/a

9.3 x 62 Mauser n/a 3 2 n/a

PPC 12 32 n/a n/a

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Caliber

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Cartridge Case Dimensions