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TRAPPIST-1 Orrery
Ferguson's Mechanical Paradox Orrery
Miniature Inner Planet Orrery
Cometarium
Nearest Stars
Mechanical Paradox Demonstrator
Napier's Bones
Genaille Lucas Calculating Rulers
Machinist's Clock
ThinkWeights
Lever Paradox
HP-01 Battery Tool
AWG Copper Wire Properties
Center Drill Dimensions
Drill Size & Decimal Equivalents
Imperial Tap Chart
Keyway Dimensions
Melting Points
Metric Tap Chart
O-Ring Sizes
Pipe Threads
Screw Extractors
Sheet Metal Gauges & Weights
Socket Head Cap Screws
Taper Calculations
Taper Pins
Taper Shank Dimensions
Washer Sizes
Wire Gauges
Wood Screw Dimensions
Taper Pins
Pin Number
Basic Diameter
Large End Major Diameter (D)
End Crown Radius (R)
Pin Length (L)
Drill Size
Inches
Approx. Fract.
Max
Min
Max
Min
6/0
0.078
5/64
0.079
0.078
0.088
0.068
3/8
#50
1/2
#51
5/8
#52
3/4
1/16
5/0
0.094
3/32
0.095
0.094
0.104
0.084
3/8
#44
1/2
#45
5/8
#46
3/4
#47
1
#49
4/0
0.109
7/64
0.11
0.109
0.119
0.099
3/8
#38
1/2
#39
5/8
#41
3/4
#42
1
#44
3/0
0.125
7/8
0.126
0.125
0.135
0.115
3/8
#32
1/2
#33
5/8
#34
3/4
7/64
1
#37
2/0
0.141
9/64
0.142
0.141
0.151
0.131
3/8
#29
1/2
#30
5/8
#30
3/4
1/8
1
#31
1-1/4
#32
0
0.156
5/32
0.157
0.156
0.166
0.146
1/2
#27
5/8
#27
3/4
9/64
1
#29
1-1/4
#30
1
0.172
11/64
0.173
0.172
0.182
0.162
5/8
#21
3/4
5/32
1
#25
1-1/4
#26
2
0.193
3/16
0.194
0.193
0.203
0.183
3/4
#16
1
11/64
1-1/4
#19
1-1/2
#20
3
0.219
7/32
0.22
0.219
0.229
0.209
3/4
13/64
1
#9
1-1/4
#10
1-1/2
3/16
1-3/4
#14
4
0.25
1/4
0.251
0.25
0.26
0.24
3/4
15/64
1
1
1-1/4
2
1-1/2
7/32
1-3/4
3
2
4
5
0.289
19/64
0.29
0.289
0.299
0.279
3/4
I
1
H
1-1/4
G
1-1/2
F
1-3/4
E
2
D
2-1/4
C
6
0.341
9/32
0.342
0.341
0.351
0.331
3/4
P
1
O
1-1/4
5/16
1-1/2
N
1-3/4
N
2
M
2-1/4
M
2-1/2
L
2-3/4
9/32
3
J
7
0.409
13/32
0.41
0.409
0.419
0.399
1
W
1-1/4
V
1-1/2
V
1-3/4
U
2
U
2-1/4
23/64
2-1/2
T
2-3/4
S
3
11/32
3-1/4
R
3-1/2
Q
8
0.492
1/2
0.493
0.492
0.502
0.482
1-1/4
29/64
1-1/2
29/64
1-3/4
29/64
2
7/16
2-1/4
7/16
2-1/2
7/16
2-3/4
27/64
3
27/64
3-1/4
27/64
3-1/2
Z
3-3/4
Z
4
13/32
4-1/4
Y
4-1/2
X
9
0.591
19/32
0.592
0.591
0.601
0.581
1-1/2
35/64
1-3/4
35/64
2
35/64
2-1/4
17/32
2-1/2
17/32
2-3/4
17/32
3
33/64
3-1/4
33/64
3-1/2
33/64
3-3/4
1/2
4
1/2
4-1/4
1/2
4-1/2
31/64
4-3/4
31/64
5
31/64
5-1/4
15/32
10
0.706
23/32
0.707
0.706
0.716
0.696
1-1/2
43/64
1-3/4
21/32
2
21/32
2-1/4
21/32
2-1/2
41/64
2-3/4
41/64
3
41/64
3-1/4
5/8
3-1/2
5/8
3-3/4
5/8
4
39/64
4-1/4
39/64
4-1/2
39/64
4-3/4
19/32
5
19/32
5-1/4
19/32
5-1/2
37/64
5-3/4
37/64
6
37/64
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