|
BA |
BSC |
BSF |
BSP |
BSTP |
BSW |
CEI |
UNC |
UNF |
ME |
BSB
CEI - Cycle Engineers Institute
| Size (inches) |
Wire
Gauge |
Threads
per inch |
Pitch |
Core
Diameter |
Usual
Applications |
Tapping
Drill Size |
0.056
inch |
17 WG |
62 Tpi |
0.0161
ins |
0.0388
ins |
Spokes |
Number
drill 61
1mm 0.0394 inch |
0.064
inch |
16 WG |
62 Tpi |
0.0161
ins |
0.0468
ins |
Spokes |
0.0469
inch (3/64) |
0.072
inch |
15 WG |
62 Tpi |
0.0161
ins |
0.0598
ins |
Spokes |
Number
Drill 54
0.0551 inch
1.4mm |
0.080
inch |
14 WG |
62 Tpi |
0.0161
ins |
0.0628
ins |
Spokes |
Number
Drill 52
0.0635 inch
1.6 mm |
0.092
inch |
13 WG |
56 Tpi |
0.0178
ins |
0.0729
ins |
Spokes |
Number
Drill 49
0.0728 inch
1.85mm |
0.104
inch |
12 WG |
44 Tpi |
0.0227
ins |
0.0798
ins |
Spokes |
Number
Drill 46
0.0807 inch
2.05mm |
0.125
(1/8th) inch |
_ |
40 Tpi |
0.025
ins |
0.0984
ins |
Small
Fixing
Screws |
Number
Drill 39
0.1004 inch
2.5mm |
0.154
inch |
_ |
40 Tpi |
0.025
ins |
0.1274
ins |
Chain
Couplings |
Number
Drill 30
0.126 inch
3.25mm |
0.175
inch |
_ |
32 Tpi |
0.0312
ins |
0.1417
ins |
General
Use |
Number
Drill 27
0.126 inch
3.25mm |
0.1875
(3/16) inch |
_ |
32 Tpi |
0.0312
ins |
0.1542
ins |
Misc Screws |
Number
Drill 23
0.1562 inch
3.97mm |
0.250
(1/4) inch |
_ |
26 Tpi |
0.0385
ins |
0.2091
ins |
Crank
Cotters |
Number
Drill 3
0.2188 inch
5.56mm |
0.266
inch |
_ |
26 Tpi |
0.0385
ins |
0.2280
ins |
General
Use |
Number
Drill 1
0.2283 inch
5.8 mm |
0.281
inch |
_ |
26 Tpi |
0.0385
ins |
_ ins |
_ |
Letter
Drill D
0.2441 inch
6.2 mm |
0.3125
(5/16) inch |
_ |
26 Tpi |
0.0385
ins |
0.2715
ins |
Front
Wheel Spindles |
Letter
Drill J
0.2756 inch
7 mm |
0.5625
(9/16) inch |
_ |
20 Tpi |
0.05 ins |
0.498
ins |
Pedal
Pins in
RH and LH Thread |
0.5156
(33/64) inch
13.1 mm |
0.9675
(9/16) inch |
_ |
30 Tpi |
0.033
ins |
0.954
ins |
Steering
Stems |
_ |
| 1 inch |
_ |
26 Tpi |
0.0385
ins |
0.959
ins |
Steering
Stems |
0.9688
(31/32) inch
24.61.1 mm |
|
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