Material Size - See table to the right
(other sizes made to order)
ISO inch (Unified) Threads to BS 1580 class 2B
BSW threads to BS 84 medium class
BA threads to BS 93 normal class
ISO Metric threads to BS 3643 class 6H
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| SWG |
MM |
INCH |
20 |
.90 |
.036 |
18 |
1.2 |
.048 |
16 |
1.6 |
.064 |
14 |
2.0 |
.080 |
12 |
2.6 |
.104 |
10 |
3.2 |
.128 |
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Nominal Thread Size |
Dim. A |
Dim. B |
Dim. C |
Metric |
UNC
UNF
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BSW |
BA |
Hex. A/F |
Round |
Inch |
mm |
Inch |
mm |
Inch |
mm |
Inch |
mm |
M3 |
4 |
1/8" |
6 |
5/16" |
7.9 |
5/16" |
7.9 |
.218 |
5.5 |
.125 |
3.2 |
M4 |
6 & 8 |
5/32" |
4 |
5/16" |
7.9 |
3/8" |
9.5 |
.265 |
6.7 |
.125 |
3.2 |
M5 |
10 |
3/16" |
2 |
3/8" |
9.5 |
7/16" |
11.1 |
.312 |
7.9 |
.150 |
3.8 |
M6 |
1/4" |
1/4" |
0 |
7/16" |
11.1 |
1/2" |
12.7 |
.375 |
9.5 |
.200 |
5 |
M8 |
5/16" |
5/16" |
- |
9/16" |
14.2 |
5/8" |
15.9 |
.500 |
12.7 |
.250 |
6.3 |
M10 |
3/8" |
3/8" |
- |
3/4" |
19.0 |
3/4" |
19 |
.625 |
15.9 |
.300 |
7.6 |
M12 |
1/2" |
1/2" |
- |
7/8" |
22.2 |
1" |
25.4 |
.750 |
19.0 |
.400 |
10.1 |
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Wide range of Hexagon Rivet Bushes and Round serrated spigot rivet bushes available from stock. |
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