Tap Drill Chart Fractional


0/80 - 1/4-20 | 1/4-24 - 13/16-20 | 7/8-9 - 1-1/4-12

NOMINAL TAP SIZE
T.P.I.
TAP DRILL
DEC EQUIV.
% OF THREAD
NOMINAL TAP SIZE
T.P.I.
TAP DRILL
DEC EQUIV.
% OF THREAD
0 80 #56 .0465 83 6 32 #36 .1065 78
    3/64 .0469 81     7/64 .1094 70
1 64 #54 .0550 89     #35 .1100 69
    #53 .0595 67 6 40 #33 .1130 77
1 72 #53 .0595 75     #32 .1160 68
    1/16 .0625 58 8 32 #29 .1360 69
2 56 #51 .0670 82     #28 .1405 58
    #50 .0700 69 8 36 #29 .1360 78
    #49 .0730 56     #28 .1405 68
2 64 #50 .0700 79     9/64 .1406 68
    #49 .0730 64 10 24 #25 .1495 75
3 48 5/64 .0781 77     #24 .1520 70
    #47 .0785 76     #23 .1540 67
    #46 .0810 67 10 32 #22 .1570 81
3 56 #46 .0810 78     #21 .1590 76
    #45 .0820 73     #20 .1610 71
    #44 .0860 56 12 24 #17 .1730 79
4 40 #43 .0890 71     #16 .1770 72
    #42 .0935 57     #15 .1800 67
4 48 #42 .0935 68 12 28 #15 .1800 78
    3/32 .0938 68     #14 .1820 73
5 40 #39 .0995 79     #13 .1850 67
    #38 .1015 72 1/4 20 #7 .2010 75
5 44 #38 .1015 79     13/64 .2031 72
    #37 .1040 71     #6 .2040 71
1 1 1 1 1   1   #5 .2055 69

 

 

 

NOMINAL TAP SIZE
T.P.I.
TAP DRILL
DEC EQUIV.
% OF THREAD
NOMINAL TAP SIZE
T.P.I.
TAP DRILL
DEC EQUIV.
% OF THREAD
1/4 24 #4 .2090 76 1/2 13 27/64 .4219 78
1/4 28 7/32 .2188 67     7/16 .4375 63
    #2 .2210 63 1/2 20 29/64 .4531 72
1/4 32 7/32 .2188 77 1/2 24 29/64 .4531 87
5/16 18 LTR F .2570 77 1/2 28 15/32 .4688 67
    LTR G .2610 71 9/16 12 15/32 .4688 87
    17/64 .2656 65     31/64 .4844 72
5/16 20 17/64 .2556 72 9/16 18 1/2 .5000 87
5/16 24 LTR I .2720 75     33/64 .5156 65
    LTR J .2770 66 9/16 24 33/64 .5156 87
5/16 32 9/32 .2812 77 5/8 11 17/32 .5312 79
3/8 16 5/16 .3125 77     35/64 .5469 66
    LTR O .3160 73 5/8 12 35/64 .5469 72
    LTR P .3230 64 5/8 18 9/16 .5625 87
3/8 20 21/64 .3281 72     37/64 .5781 65
3/8 24 LTR Q .3320 79 5/8 24 37/64 .5781 87
    LTR R .3390 67 11/16 12 39/64 .6094 72
3/8 32 11/32 .3438 77 11/16 24 41/64 .6406 87
7/16 14 LTR U .3680 75 3/4 10 41/64 .6406 84
    3/8 .3750 67     21/32 .6562 72
    LTR V .3770 65 3/4 12 43/64 .6719 72
7/16 20 LTR W .3860 79 3/4 16 11/16 .6875 77
    25/64 .3906 72 3/4 20 45/64 .7031 72
7/16 24 LTR X .3970 75 13/16 12 47/64 .7344 72
7/16 28 LTR Y .4040 72 13/16 16 3/4 .7500 77
1 1 1 1 1 13/16 20 49/64 .7656 72

 

 

 

 

NOMINAL TAP SIZE
T.P.I.
TAP DRILL
DEC EQUIV.
% OF THREAD
7/8 9 49/64 .7656 76
# # 25/32 .7812 65
7/8 12 51/64 .7969 72
7/8 14 51/64 .7969 84
# # 13/16 .8125 67
7/8 16 13/16 .8125 77
7/8 20 53/64 .8281 72
15/16 12 55/64 .8594 72
15/16 16 7/8 .8750 77
1 INCH 8 7/8 .8750 77
# # 57/64 .8906 67
1 INCH 12 59/64 .9219 72
# # 15/16 .9375 58
1 INCH 14 59/64 .9219 84
# # 15/16 .9375 67
1 INCH 16 15/16 .9375 77
1 INCH 20 61/64 .9531 72
1-1/8 7 63/64 .9844 76
# # 1 INCH 1.0000 67
1-1/8 12 1-1/32 1.0312 87
# # 1-3/64 1.0469 72
1-1/8 16 1-1/16 1.0625 77
1-1/8 18 1-1/16 1.0625 87
1-1/4 7 1-3/32 1.0938 84
# # 1-7/64 1.1094 76
# # 1-1/8 1.1250 67
1-1/4 12 1-5/32 1.1562 87
# # 1-11/64 1.1719 72

Office Hours: 8:00AM - 5:00PM - PST
Monday - Friday

Contact:

B.E.E. Industrial Supply, Inc.
beeind.com
Email: beeind@pacbell.net
Phone: (510) 293-3180
Fax: (510) 293-3190
25634 Nickel Place
Hayward, California 94545-3222
USA

Home | Company Info | Contact Us! | Bargains | Line Card | Specials
Order Form | Reference | General Notice | Web Design

Copyright © 1999 - © by B.E.E. Industrial Supply, Inc.