Machinery's Handbook, 31st Edition
Thread Gages 2145 Table 2. American National Standard Tolerances for Plain Cylindrical Gages ANSI/ASME B1.2-1983 (R2017) Size Range Tolerance Class a
XX
X
Y
Z
ZZ
To and Including
Above 0.020 0.825 1.510 2.510 4.510 6.510 9.010
Tolerance
0.825 1.510 2.510 4.510 6.510 9.010 12.010
.00002 .00003 .00004 .00005 .000065 .00008 .00010
.00004 .00006 .00008 .00010 .00013 .00016 .00020
.00007 .00009 .00012 .00015 .00019 .00024 .00030
.00010 .00012 .00016 .00020 .00025 .00032 .00040
.00020 .00024 .00032 .00040 .00050 .00064
.00080 a Tolerances apply to actual diameter of plug or ring. Apply tolerances as specified in the Standard. Symbols XX, X, Y, Z, and ZZ are standard gage tolerance classes. All dimensions are given in inches. Table 3. Constants for Computing Thread Gage Dimensions ANSI/ASME B1.2-1983 (R2017) Threads per Inch Pitch, p . . p p 0060 0017 3 2 + .05 p .087 p Height of Sharp V- Thread, H = .866025 p H /2 = .43301 p H /4 = .216506 p 80 .012500 .0034 .00063 .00109 .010825 .00541 .00271 72 .013889 .0037 .00069 .00122 .012028 .00601 .00301 64 .015625 .0040 .00078 .00136 .013532 .00677 .00338 56 .017857 .0044 .00089 .00155 .015465 .00773 .00387 48 .020833 .0049 .00104 .00181 .018042 .00902 .00451 44 .022727 .0052 .00114 .00198 .019682 .00984 .00492 40 .025000 .0056 .00125 .00218 .021651 .01083 .00541 36 .027778 .0060 .00139 .00242 .024056 .01203 .00601 32 .031250 .0065 .00156 .00272 .027063 .01353 .00677 28 .035714 .0071 .00179 .00311 .030929 .01546 .00773 27 .037037 .0073 .00185 .00322 .032075 .01604 .00802 24 .041667 .0079 .00208 .00361 .036084 .01804 .00902 20 .050000 .0090 .00250 .00435 .043301 .02165 .01083 18 .055556 .0097 .00278 .00483 .048113 .02406 .01203 16 .062500 .0105 .00313 .00544 .054127 .02706 .01353 14 .071429 .0115 .00357 .00621 .061859 .03093 .01546 13 .076923 .0122 .00385 .00669 .066617 .03331 .01665 12 .083333 .0129 .00417 .00725 .072169 .03608 .01804 11 1 ∕ 2 .086957 .0133 .00435 .00757 .075307 .03765 .01883 11 .090909 .0137 .00451 .00791 .078730 .03936 .01968 10 .100000 .0146 .00500 .00870 .086603 .04330 .02165 9 .111111 .0158 .00556 .00967 .096225 .04811 .02406 8 .125000 .0171 .00625 .01088 .108253 .05413 .02706 7 .142857 .0188 .00714 .01243 .123718 .06186 .03093 6 .166667 .0210 .00833 .01450 .144338 .07217 .03608 5 .200000 .0239 .01000 .01740 .173205 .08660 .04330 4 1 ∕ 2 .222222 .0258 .01111 .01933 .192450 .09623 .04811 4 .250000 .0281 .01250 .02175 .216506 .10825 .05413 All dimensions are given in inches unless otherwise specified.
Copyright 2020, Industrial Press, Inc.
ebooks.industrialpress.com
Made with FlippingBook - Share PDF online