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Machine Screws
Tapping &
Clearance Hole Information
|
Machine Screw Size |
Number of Threads Per Inch |
Minor Dia. |
Tap Drills |
Clearance Hole Drills |
|
Aluminum, Brass & Plastics
75% Thread |
Stainless Steel, Steels & Iron
50% Thread |
All Materials |
|
Close Fit |
Free Fit |
|
No. or Dia. |
Major Dia. |
Drill Size |
Decimal Equiv. |
Drill Size |
Decimal Equiv. |
Drill Size |
Decimal Equiv. |
Drill Size |
Decimal Equiv. |
|
0 |
.0600 |
80 |
.0447 |
3/64 |
.0469 |
55 |
.0520 |
52 |
.0635 |
50 |
.0700 |
|
1 |
.0730 |
64 |
.0538 |
53 |
.0595 |
1/16 |
.0625 |
48 |
.0760 |
46 |
.0810 |
|
72 |
.0560 |
53 |
.0595 |
52 |
.0635 |
|
2 |
.0860 |
56 |
.0641 |
50 |
.0700 |
49 |
.0730 |
43 |
.0890 |
41 |
.0960 |
|
64 |
.0668 |
50 |
.0700 |
48 |
.0760 |
|
3 |
.0990 |
48 |
.0734 |
47 |
.0785 |
44 |
.0860 |
37 |
.1040 |
35 |
.1100 |
|
56 |
.0771 |
45 |
.0820 |
43 |
.0890 |
|
4 |
.1120 |
40 |
.0813 |
43 |
.0890 |
41 |
.0960 |
32 |
.1160 |
30 |
.1285 |
|
48 |
.0864 |
42 |
.0935 |
40 |
.0980 |
|
5 |
.1250 |
40 |
.0943 |
38 |
.1015 |
7/64 |
.1094 |
30 |
.1285 |
29 |
.1360 |
|
44 |
.0971 |
37 |
.1040 |
35 |
.1100 |
|
6 |
.1380 |
32 |
.0997 |
36 |
.1065 |
32 |
.1160 |
27 |
.1440 |
25 |
.1495 |
|
40 |
.1073 |
33 |
.1130 |
31 |
.1200 |
|
8 |
.1640 |
32 |
.1257 |
29 |
.1360 |
27 |
.1440 |
18 |
.1695 |
16 |
.1770 |
|
36 |
.1299 |
29 |
.1360 |
26 |
.1470 |
|
10 |
.1900 |
24 |
.1389 |
25 |
.1495 |
20 |
.1610 |
9 |
.1960 |
7 |
.2010 |
|
32 |
.1517 |
21 |
.1590 |
18 |
.1695 |
|
12 |
.2160 |
24 |
.1649 |
16 |
.1770 |
12 |
.1890 |
2 |
.2210 |
1 |
.2280 |
|
28 |
.1722 |
14 |
.1820 |
10 |
.1935 |
|
32 |
.1777 |
13 |
.1850 |
9 |
.1960 |
|
1/4 |
.2500 |
20 |
.1887 |
7 |
.2010 |
7/32 |
.2188 |
F |
.2570 |
H |
.2660 |
|
28 |
.2062 |
3 |
.2130 |
1 |
.2280 |
|
32 |
.2117 |
7/32 |
.2188 |
1 |
.2280 |
|
5/16 |
.3125 |
18 |
.2443 |
F |
.2570 |
J |
.2770 |
P |
.3230 |
Q |
.3320 |
|
24 |
.2614 |
I |
.2720 |
9/32 |
.2812 |
|
32 |
.2742 |
9/32 |
.2812 |
L |
.2900 |
|
3/8 |
.3750 |
16 |
.2983 |
5/16 |
.3125 |
Q |
.3320 |
W |
.3860 |
X |
.3970 |
|
24 |
.3239 |
Q |
.3320 |
S |
.3480 |
|
32 |
.3367 |
11/32 |
.3438 |
T |
.3580 |
|
7/16 |
.4375 |
14 |
.3499 |
U |
.3680 |
25/64 |
.3906 |
29/64 |
.4531 |
15/32 |
.4687 |
|
20 |
.3762 |
25/64 |
.3906 |
13/32 |
.4062 |
|
28 |
.3937 |
Y |
.4040 |
Z |
.4130 |
|
1/2 |
.5000 |
13 |
.4056 |
27/64 |
.4219 |
29/64 |
.4531 |
33/64 |
.5156 |
17/32 |
.5312 |
|
20 |
.4387 |
29/64 |
.4531 |
15/32 |
.4688 |
|
28 |
.4562 |
15/32 |
.4688 |
15/32 |
.4688 |
|
9/16 |
.5625 |
12 |
.4603 |
31/64 |
.4844 |
33/64 |
.5156 |
37/64 |
.5781 |
19/32 |
.5938 |
|
18 |
.4943 |
33/64 |
.5156 |
17/32 |
.5312 |
|
24 |
.5114 |
33/64 |
.5156 |
17/32 |
.5312 |
|
5/8 |
.6250 |
11 |
.5135 |
17/32 |
.5312 |
9/16 |
.5625 |
41/64 |
.6406 |
21/32 |
.6562 |
|
18 |
.5568 |
37/64 |
.5781 |
19/32 |
.5938 |
|
24 |
.5739 |
37/64 |
.5781 |
19/32 |
.5938 |
|
11/16 |
.6875 |
24 |
.6364 |
41/64 |
.6406 |
21/32 |
.6562 |
45/64 |
.7031 |
23/32 |
.6562 |
|
3/4 |
.7500 |
10 |
.6273 |
21/32 |
.6562 |
11/16 |
.6875 |
49/64 |
.7656 |
25/32 |
.7812 |
|
16 |
.6733 |
11/16 |
.6875 |
45/64 |
.7031 |
|
20 |
.6887 |
45/64 |
.7031 |
23/32 |
.7188 |
|
13/16 |
.8125 |
20 |
.7512 |
49/64 |
.7656 |
25/32 |
.7812 |
53/64 |
.8281 |
27/32 |
.8438 |
|
7/8 |
.8750 |
9 |
.7387 |
49/64 |
.7656 |
51/64 |
.7969 |
57/64 |
.8906 |
29/32 |
.9062 |
|
14 |
.7874 |
13/16 |
.8125 |
53/64 |
.8281 |
|
20 |
.8137 |
53/64 |
.8281 |
27/32 |
.8438 |
|
15/16 |
.9375 |
20 |
.8762 |
57/64 |
.8906 |
29/32 |
.9062 |
61/64 |
.9531 |
31/32 |
.9688 |
|
1 |
1.000 |
8 |
.8466 |
7/8 |
.8750 |
59/64 |
.9219 |
1-1/64 |
1.0156 |
1-1/32 |
1.0313 |
|
12 |
.8978 |
15/16 |
.9375 |
61/64 |
.9531 |
|
20 |
.9387 |
61/64 |
.9531 |
31/32 |
.9688 |
|
1-1/16 |
1.0625 |
18 |
.9943 |
1.000 |
1.000 |
1-1/64 |
1.0156 |
1-5/64 |
1.0781 |
1-3/32 |
1.0938 |
|
1-1/8 |
1.1250 |
7 |
.9497 |
63/64 |
.9844 |
1-1/32 |
1.0313 |
1-9/64 |
1.1406 |
1-5/32 |
1.1562 |
|
12 |
1.0228 |
1-3/64 |
1.0469 |
1-5/64 |
1.0781 |
|
18 |
1.0568 |
1-1/16 |
1.0625 |
1-5/64 |
1.0781 |
|
1-3/16 |
1.1875 |
18 |
1.1193 |
1-1/8 |
1.1250 |
1-9/64 |
1.1406 |
1-13/64 |
1.2031 |
1-7/32 |
1.2188 |
|
1-1/4 |
1.2500 |
7 |
1.0747 |
1-7/64 |
1.1094 |
1-5/32 |
1.1562 |
1-17/64 |
1.2656 |
1-9/32 |
1.2812 |
|
12 |
1.1478 |
1-11/64 |
1.1719 |
1-13/64 |
1.2031 |
|
18 |
1.1818 |
1-3/16 |
1.1875 |
1-13/64 |
1.2031 |
|
1-5/16 |
1.3125 |
18 |
1.2443 |
1-1/4 |
1.2500 |
1-17/64 |
1.2656 |
1-21/64 |
1.3281 |
1-11/32 |
1.3438 |
|
1-3/8 |
1.3750 |
6 |
1.1705 |
1-7/32 |
1.2187 |
1-17/64 |
1.2656 |
1-25/64 |
1.3906 |
1-13/32 |
1.4062 |
|
12 |
1.2728 |
1-19/64 |
1.2969 |
1-21/64 |
1.3281 |
|
18 |
1.3068 |
1-5/16 |
1.3125 |
1-21/64 |
1.3281 |
|
1-7/16 |
1.4375 |
18 |
1.3693 |
1-3/8 |
1.3750 |
1-25/64 |
1.3906 |
1-29/64 |
1.4531 |
1-15/32 |
1.4688 |
|
1-1/2 |
1.500 |
6 |
1.2955 |
1-11/32 |
1.3437 |
1-25/64 |
1.3906 |
1-33/64 |
1.5156 |
1-17/32 |
1.5312 |
|
12 |
1.3978 |
1-27/64 |
1.4219 |
1-7/16 |
1.4375 |
|
18 |
1.4318 |
1-7/16 |
1.4375 |
1-29/64 |
1.4531 |
|
1-9/16 |
1.5625 |
18 |
1.4943 |
1-12 |
1.500 |
1-33/64 |
1.5156 |
1-37/64 |
1.5781 |
1-19/32 |
1.5938 |
| 1-5/8 |
1.625 |
18 |
1.5568 |
1-9/16 |
1.5625 |
1-37/64 |
1.5781 |
1-41/64 |
1.6406 |
1-21/32 |
1.6562 |
|
1-11/16 |
1.6875 |
18 |
1.6193 |
1-5/8 |
1.6250 |
1-41/64 |
1.6406 |
1-45/64 |
1.7031 |
1-23/32 |
1.7188 |
|
1-3/4 |
1.750 |
5 |
1.5046 |
1-9/16 |
1.5625 |
1-5/8 |
1.6250 |
1-49/64 |
1.7659 |
1-25/32 |
1.7812 |
|
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Replaces Acme OEM Filter System
Are Pusher Marks a Problem?
"the no mark pusher"
Now Adjustable!
Flats - Hexes - Squares
Make them all with just one attachment
Available for:
Acme-Gridley, New Britain, Davenport, Wickman
& Gildemeister
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