Reference Charts

Standard Tap and Drill Sizes

Size

Thread

Drill Size

1/4″
20
7
1/4″
28
3
5/16″
18
F
5/16″
24
I
3/8″
16
5/16″
3/8″
24
21/64″
7/16″
14
3/8″
7/16″
20
25/64″
1/2″
13
27/64″
1/2″
20
29/64″
9/16″
12
31/64″
9/16″
18
33/64″
5/8″
11
17/32″
5/8″
18
37/64″
3/4″
10
21/32″
3/4″
16
11/16″
7/8″
9
49/64″
7/8″
14
13/16″
1″
8
7/8″

Steel Sheet

Gauge

Thickness

Weight/Sq.Ft

11
0.125
5.000
12
0.105
4.370
13
0.090
3.750
14
0.075
3.120
18
0.048
2.000
20
0.036
1.500
22
0.030
1.250
24
0.024
1.000
26
0.018
0.750
28
0.015
0.625

Aluminum Sheet

Thickness

Weight/Sq.Ft

0.020
0.260
0.024
0.310
0.032
0.460
0.040
0.540
0.050
0.680
0.063
0.880
0.080
1.125
0.090
1.300
0.125
1.800

Weight per Gallon

Item

Weight Lbs.

Water
8.333
Fuel
6.042
Oil
7.500

Dry Bolt Torque

Coarse Thread Grade 5

Size

Foot Lbs.

1/4″
10
5/16″
19
3/8″
33
7/16″
54
1/2″
78
9/16″
114
5/8″
154
3/4″
257

AN Wench Conversion

AN Size

Wrench Size

-4
9/16″
-6
11/16″
-8
7/8″
-10
1″
-12
1-1/4″
-16
1-1/2″
-20
1-13/16″

Other Item

Wrench Size

7/8″ Stab Bar
1-5/16″
1″ Jam Nut
1-1/2″
1/2″ Hood Pin
3/4″
3/4″ Trailing Arm
1-1/8″
5/8″ Tie Rod
15/16″

Round Steel Tubing

O.D.

Wall

Wt./ Ft.

1″
0.049
0.498
1″
0.065
0.649
1″
0.095
0.918
1″
0.120
1.128
1-1/4″
0.049
0.629
1-1/4″
0.065
0.823
1-1/4″
0.095
1.172
1-1/4″
0.120
1.448
1-1/2″
0.049
0.759
1-1/2″
0.065
0.996
1-1/2″
0.095
1.426
1-1/2″
0.120
1.769
1-3/4″
0.049
0.890
1-3/4″
0.065
1.170
1-3/4″
0.095
1.679
1-3/4″
0.120
2.089

Steel Tubing

O.D.

Wall

Wt./Ft.

1″ x1″
0.065
0.827
1″ x1″
0.083
1.035
1″ x1″
0.120
1.436
1-1/2″x1-1/2″
0.065
1.268
1-1/2″x1-1/2″
0.083
1.599
1-1/2″x1-1/2″
0.095
1.815
1-1/2″x1-1/2″
0.120
2.252
1-3/4″x1-3/4″
0.065
1.490
1-3/4″x1-3/4″
0.083
1.882
1-3/4″x1-3/4″
0.095
2.168
1-3/4″x1-3/4″
0.120
2.660
2″ x 2″
0.065
1.710
2″ x 2″
0.083
2.164
2″ x 2″
0.095
2.461
2″ x 2″
0.120
3.050
2″ x 3″
0.065
2.152
2″ x 3″
0.083
2.728
2″ x 3″
0.095
3.544
2″ x 3″
0.120
3.900

Useful Equivalents

Length

Foot
=
30.48
Centimeters
Inch
=
2.54
Centimeters
Meter
=
3.281
Feet
Meter
=
39.37
Inches