Frac. mm Guage
Letter		 inch Frac. mm Letter inch Frac. mm Letter inch Frac. mm Letter inch
4.496 16 0.1770 6.20 0.2441 8.20 0.3228 10.30 0.4055
4.50 0.1772 6.248 D 0.2460 8.204 P 0.3230 13/32 10.319 0.4062
4.572 15 0.1800 6.25 0.2461 8.25 0.3248 10.40 0.4094
4.60 0.1811 6.30 0.2480 8.30 0.3281 10.490 Z 0.4130
4.623 14 01820 1/4 6.350 E 0.2500 21/64 8.334 03281 10.50 0.4134
4.70 13 0.1850 6.40 0.2520 8.40 0.3307 10.60 0.4173
4.75 0.1870 6.50 0.2598 8.433 Q 0.3320 10.70 0.4213
3/16 4.762 0.1890 6.528 F 0.2570 8.50 0.3346 27/64 10.716 0.4219
4.80 12 0.1890 6.60 0.2598 8.60 0.3386 10.75 0.4232
4.851 11 0.1910 6.629 G 0.2610 8.611 R 0.3390 10.80 0.4252
4.90 0.1929 6.70 0.2638 8.70 0.3425 10.90 0.4291
4.915 10 0.1935 17/64 6.747 0.2656 11/32 8.731 0.3438 11.00 0.4331
4.978 9 0.1960 6.75 0.2657 8.75 0.3445 11.10 0.4370
5.00 0.1969 6.756 H 0.2660 8.80 0.3465 7/16 11.112 0.4375
5.055 8 0.1990 6.80 0.2677 8.839 S 0.3480 11.20 0.4409
5.10 0.2008 6.90 0.2717 8.90 0.3506 11.25 0.4429
5.105 7 0.2010 6.909 I 0.2720 9.00 0.3543 11.30 0.4449
13/64 5.159 0.2031 7.00 0.2756 9.093 T 0.3580 11.40 0.4488
5.182 6 0.2040 7.036 J 0.2770 9.10 0.3583 11.50 0.4528
5.20 0.2047 7.10 0.2795 23/64 9.128 0.3594 29/64 11.509 0.4531
5.220 5 0.2055 7.137 K 0.2810 9.20 0.3622 11.60 0.4567
5.25 0.2067 9/32 7.144 0.2812 9.25 0.3642 11.70 0.4606
5.30 0.2087 7.20 0.2835 9.30 0.3661 11.75 0.4626
5.309 4 0.2090 7.25 0.2854 9.347 U 0.3680 11.80 0.4646
5.40 0.2126 7.30 0.2874 9.40 0.3701 11.90 0.4685
5.410 3 0.2130 7.366 L 0.2900 9.50 0.3740 15/32 11.906 0.4688
5.50 0.2165 7.40 0.2913 3/8 9.525 0.3750 12.00 0.4724
7/32 5.556 0.2188 7.493 M 0.2950 9.576 V 0.3770 12.10 0.4764
5.60 0.2205 7.50 0.2953 9.60 0.3780 12.20 0.4803
5.613 2 0.2210 19/64 7.541 0.2969 9.70 0.3819 12.25 0.4823
5.70 0.2244 7.60 0.2992 9.75 0.3839 12.30 0.4843
5.75 0.2264 7.671 N 0.3020 9.80 0.3858 31/64 12.303 0.4844
5.791 1 0.2280 7.70 0.3031 9.804 W 0.3860 12.40 0.4882
5.80 0.2283 7.75 0.3051 9.90 0.3898 12.50 0.4921
5.90 0.2323 7.80 0.3071 25/64 9.922 0.3906 12.60 0.4961
5.944 A 0.2340 7.90 0.3110 10.00 0.3937 1/2 12.70 0.5000
15/64 5.953 0.2344 10.084 X 0.3970 12.75 0.5020
6.00 0.2362 5/16 7.938 0.3125 10.10 0.3976 12.80 0.5039
6.045 B 0.2380 8.00 0.3150 10.20 0.4016 12.90 0.5079
6.10 0.2402 8.026 O 0.3160 10.25 0.4035 17/32 13.494 0.5312
6.147 C 0.2420 8.10 0.3189 10.262 Y 0.4040 1350 0.5315

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