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Standard Pitch Diameter Chart

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Thread Plug Gages

 

BASIC THREAD DESIGNATION DIMENSIONS IN MILLIMETERS DIMENSIONS IN INCHES
NOMINAL O.D. PITCH MAJOR DIA. PITCH DIA. MINOR DIA. NOMINAL O.D. THREADS PER INCH MAJOR DIA. PITCH DIA. MINOR DIA.
MIN. (MUST CLEAR) MIN. GO MAX. HI MIN. MAX. MIN. (MUST CLEAR) MIN. GO MAX. HI MIN. MAX.
M1.6x0.35 1.6 0.35 1.600 1.373 1.458 1.221 1.321 .06299 72.57 .06299 1.05406 .05740 .04807 .05201
M2x0.4 2.0 0.40 2.000 1.740 1.830 1.567 1.679 .07874 63.50 .07874 1.06850 .07205 .06169 .06610
M2.5x0.45 2.5 0.45 2.500 2.208 2.303 2.013 2.138 .09843 56.44 .09843 .08693 .09067 .07925 .08417
M3x0.5 3.0 0.50 3.000 2.675 12.775 2.459 2.599 .11811 50.80 .11811 .10531 .10925 .09681 .10232
M3.5x0.6 3.5 0.60 3.500 3.110 3.222 2.850 3.010 .13780 42.33 .13780 12244 .12685 .11220 .11850
M4x0.7 4.0 0.70 4.000 3.545 13.663 3.242 3.422 .15748 36.29 .15748 .13957 .14421 .12764 .13472
M5x0.8 5.0 0.80 5.000 4.480 4.605 4.134 4.334 .19685 31.75 .19685 .17638 .18130 .16276 .17063
M6x1 6.0 1.00 6.000 5.350 5.500 4.917 5.153 .23622 25.40 .23622 .21061 .21654 .19358 .20287
M8x1.25 8.0 1.25 8.000 7.188 17.348 6.647 6.912 .31496 20.32 .31496 .28299 .28929 .26169 .27213
M8x1 8.0 1.00 8.000 7.350 17.500 6.917 7.153 .31496 25.40 .31496 .28937 .29528 .27232 .28161
M10x1.5 10.0 1.50 10.000 9.026 9.206 8.376 8.676 .39370 16.93 .39370 .35535_ .36244 .32976 .34157
M10x1.25 10.0 1.25 10.000 9.188 19.348 8.647 8.912 .39370 20.32 .39370 .36171 .36803 .34043 .35087
M10x0.75 10.0 0.75 10.000 9.513 9.6451 9.188 9.378 .39370 33.87 .39370 37451 .37972 .36173 .36921
M12x1.75 12.0 1.75 12.000 10.863 11.0631 10.106 10.441 .47244 14.51 .47244 .42768 .43555 .39787 .41106
M12x1.5 12.0 1.50 12.000 11.026 11.2161 10.376 10.676 .47244 16.93 .47244 .43409 .44157 .40850 .42031
M12x1.25 12.0 1.25 12.000 11.188 11.3681 10.647 10.912 .47244 20.32 .47244 .44047 .44756 .41917 .42961
M12x1 12.0 1.00 12.000 11.350 11.510 10.917 11.153 .47244 25.40 .47244 .44681 .45315 .42980 .43909
M14x2 14.0 2.00 14.000 12.701 12.913 11.835 12.210 .55118 12.70 .55118 1.50004w .50839 .46594 .48071
M14x1.5 14.0 1.50 14.000 13.026 13.216 12.376 12.676 .55118 16.93 .55118 .51283 .52031 .48724 .49906
M15x1 15.0 1.00 15.000 14.350 14.510 13.917 14.153 .59055 25.40 .59055 .56496 .57126 .54791 .55720
M16x2 16.0 2.00 16.000 14.701 14.913 13.835 14.210 .62992 12.70 .62992 .57878 .58713 .54469 .55945
M16x1.5 16.0 1.50 16.000 15.026 15.216 14.376 14.676 .62992 16.93 .62992 .59157 .59906 .56598 .57780
M17x1 17.0 1.00 17.000 16.350 16.510 15.917 16.153 .66929 25.40 .66929 1.64370 .65000 .61886 .63594
M18x1.5 18.0 1.50 18.000 17.026 17.216 16.376 16.676 .70866 16.93 .70866 1.67031 .67780 .64472 .65654
M20x2.5 20.0 2.50 20.000 18.376 18.600 17.294 17.744 .78740 10.16 .78740 172346 .73228 .68087 .69858
M20x1.5 20.0 1.50 20.000 19.026 19.216 18.376 18.676 .78740 16.93 .78740 1.74906 .75654 .72346 .73528
M20x1 20.0 1.00 20.000 19.350 19.510 18.917 19.153 .78740 25.40 .78740 1.76181 .76811 .74476 .75406
M22x2.5 22.0 2.50 22.000 20.376 20.600 19.294 19.744 .86614 10.16 .86614 .80220 .81102 .75961 .77732
M22x1.5 22.0 1.50 22.000 21.026 21.216 20.376 20.676 .86614 16.93 .86614 .82780 .83528 .80220 .81402
M24x3 24.0 3.00 24.000 22.051 22.316 20.752 21.252 .94488 8.47 .94488 1.86815 .87858 .81701 .83669
M24x2 24.0 2.00 24.000 22.701 22.925 21.835 22.210 .94488 12.70 .94488 1.89371 .90256 .85965 .87441
M25x1.5 25.0 1.50 25.000 24.026 24.226 23.376 23.676 .98425 16.93 .98425 1.94591 .95378 .92031 .93213
M27x3 27.0 3.00 27.000 25.051 25.316:1 23.752 24.252 1.06299 8.47 1.06299 ,98626 .99669 .93512 .95480
M27x2 27.0 2.00 27.000 25.701 25.925 24.835 25.210 1.06299 12.70 1.06299 1.01185_ 1.02067 .97776 .99252
M30x3.5 30.0 3.50 30.000 27.727 28.0071 26.211 26.771 1.18110 7.26 1.18110 1.09161 1.10264 1.03193 1.05398
M30x2 30.0 2.00 30.000 28.701 28.925 27.835 28.210 1.18110 12.70 1.18110 1.12991 1.13878 1.09587 1.11063
M30x1.5 30.0 1.50 30.000 29.026 29.2261 28.376 28.676 1.18110 16.93 1.18110 1.14276 1.15063 1.11717 1.12898
M33x2 33.0 2.00 33.000 31.701 31.9251 30.835 31.210 1.29921 12.70 1.29921 1.24807 1.25689 1.21398 1.22874
M35x1.5 35.0 1.50 35.000 34.026 34.2261 33.376 33.676 1.37795 16.93 1.37795 1.339611 1.34748 1.31402 1.32559
M36x4 36.0 4.00 36.000 33.402 33.702 31.670 32.270 1.41732 6.35 1.41732 1.31501 1.32685 1.24685 1.27047
M36x2 36.0 2.00 36.000 34.701 34.925 33.835 34.210 1.41732 12.70 1.41732 1.36618 1.37500 1.33209 1.34685
M39x2 39.0 2.00 39.000 37.701 37.925 36.835 37.210 1.53543 12.70 1.53543 1.48429 1.49311 1.45020 1.46496

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