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B.S.
CYCLE THREAD SERIES
|
| APPLICATION |
|
Used
for Spokes, Nipples, Bolts, Nuts in cycle industry.
|
| GENERAL |
| B.S.
Cycle threads are fullform and have included angle of 60º. |
| SPECIFICATION |
|
Basic
Dimensions : B.S. 811 – 1950.
Gauging Practice : B.S. 919 Part II – 1971.
|
| DIAMETER
- TPI COMBINATION. |
|
DIA
IN INCH
|
DIA
IN mm
|
TPI
|
|
For
Spokes and Nipples
|
|
SWG
15
|
2.09553
|
56
|
|
SWG
14
|
2.2987
|
56
|
|
SWG
13
|
2.6035
|
56
|
|
SWG
12
|
2.9083
|
56
|
|
SWG
11
|
3.2791
|
44
|
|
SWG
10
|
3.6144
|
40
|
|
SWG
9
|
4.0208
|
40
|
|
SWG
8
|
4.5110
|
32
|
|
For
Bolts and Nuts
|
|
1/8"
|
3.175
|
40
|
|
5/32"
|
3.9688
|
32
|
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3/16"
|
4.7625
|
32
|
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7/32"
|
5.5563
|
26
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¼"
|
6.350
|
26
|
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9/32"
|
7.1438
|
26
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5/16"
|
7.9375
|
26
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3/8"
|
9.525
|
26
|
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7/16"
|
11.1125
|
26
|
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½"
|
12.70
|
26
|
|
9/16"
|
14.2875
|
26
|
|
5/8"
|
15.875
|
26
|
|
11/16"
|
17.4625
|
26
|
|
¾"
|
19.05
|
26
|
|
For
Special Thread Applications
|
|
17/64"
|
6.7469
|
26
|
|
7/8"
|
22.225
|
24
|
|
31/32"
|
24.6063
|
30
|
|
1"
|
25.400
|
24
|
|
1.1/8"
|
28.575
|
26
|
|
1.290"
|
32.766
|
24
|
|
1.370"
|
34.798
|
24
|
|
1.45"
|
36.830
|
26
|
|
1.9/16"
|
39.6875
|
24
|
|
1.5/8"
|
41.275
|
24
|
|
| CLASS
OF FIT |
|
For
Rings – Close, Medium and Free.
For Plugs - Close, Medium and Free.
|
| For
'SWG' series and Special thread series only Medium class
is recommended for Plugs and Rings. |
| DESIGNATION
/ MARKING SYSTEM |
|
¼"
– 26 BSCY (F)
1.290"- 24 BSCY (M) LH
SWG15-56 BSCY (M)
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