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Comparative Wire Diameters
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| NO. |
Birmingham or Stubs(B.W.G.) |
British Imperial Standard(S. W. G.) |
J. de P |
Washburn & Moen |
American or Brown & Sharp |
| mm |
inch |
mm |
inch |
mm |
inch |
inch |
| 00 |
9.652 |
0.380" |
8.839 |
0.348" |
(PP)0.4 |
0.3310" |
0.3648" |
| 0 |
8.636 |
0.340" |
8.229 |
0.324" |
(P)0.5 |
0.3065" |
0.3249" |
| 1 |
7.620 |
0.300" |
7.620 |
0.300" |
0.6 |
0.2830" |
0.2893" |
| 2 |
7.213 |
0.284" |
7.010 |
0.276" |
0.7 |
0.2625" |
0.2576" |
| 3 |
6.579 |
0.259" |
6.401 |
0.252" |
0.8 |
0.2437" |
0.2294" |
| 4 |
6.045 |
0.238" |
5.893 |
0.232" |
0.9 |
0.2253" |
0.2043" |
| 5 |
5.588 |
0.220" |
5.385 |
0.212" |
1.0 |
0.2070" |
0.1819" |
| 6 |
5.156 |
0.203" |
4.877 |
0.192" |
1.1 |
0.1920" |
0.1620" |
| 7 |
4.572 |
0.180" |
4.470 |
0.176" |
1.2 |
0.1770" |
0.1442" |
| 8 |
4.191 |
0.165" |
4.064 |
0.160" |
1.3 |
0.1620" |
0.1284" |
| 9 |
3.759 |
0.155" |
3.658 |
0.144" |
1.4 |
0.1483" |
0.1144" |
| 10 |
3.404 |
0.134" |
3.251 |
0.128" |
1.5 |
0.1350" |
0.1018" |
| 11 |
3.048 |
0.120" |
2.946 |
0.116" |
1.6 |
0.1205" |
0.0907" |
| 12 |
2.769 |
0.109" |
2.642 |
0.104" |
1.8 |
0.1055" |
0.0808" |
| 13 |
2.413 |
0.095" |
2.337 |
0.092" |
2.0 |
0.0915" |
0.0719" |
| 14 |
2.103 |
0.082" |
2.032 |
0.080" |
2.2 |
0.0800" |
0.0640" |
| 15 |
1.829 |
0.072" |
1.829 |
0.072" |
2.4 |
0.0720" |
0.0570" |
| 16 |
1.651 |
0.065" |
1.626 |
0.064" |
2.7 |
0.0625" |
0.0508" |
| 17 |
1.473 |
0.058" |
1.422 |
0.056" |
3.0 |
0.0540" |
0.0452" |
| 18 |
1.245 |
0.049 |
1.219 |
0.048" |
3.4 |
0.0475" |
0.0403" |
| 19 |
1.067 |
0.042" |
1.016 |
0.040" |
3.9 |
0.0410" |
0.0358" |
| 20 |
0.8886 |
0.035" |
0.9144 |
0.036" |
4.4 |
0.0348" |
0.0319" |
| 21 |
0.8128 |
0.032" |
0.8128 |
0.032" |
4.9 |
0.0317" |
0.0284" |
| 22 |
0.7109 |
0.028" |
0.7112 |
0.028" |
5.4 |
0.0286" |
0.0253" |
| 23 |
0.6347 |
0.025" |
0.6092 |
0.024" |
5.9 |
0.0258" |
0.0225" |
| 24 |
0.5585 |
0.022" |
0.5588 |
0.022" |
6.4 |
0.0230" |
0.0201" |
| 25 |
0.5078 |
0.020" |
0.5080 |
0.020" |
7.0 |
0.0204" |
0.0179" |
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| NO. |
Birmingham or Stubs(B .W .G.) |
British Imperial Standard (S. W. G.) |
J. de P |
Washburn & Moen |
American or Brown & Sharp |
| mm |
inch |
mm |
inch |
mm |
inch |
inch |
| 26 |
0.4570 |
0.018" |
0.4572 |
0.018" |
7.6 |
0.0181" |
0.0159" |
| 27 |
0.4062 |
0.016" |
0.4166 |
0.016" |
8.2 |
0.0173" |
0.0141" |
| 28 |
0.3555 |
0.014" |
0.3759 |
0.015" |
8.8 |
0.0162" |
0.0126" |
| 29 |
0.3300 |
0.013" |
0.3453 |
0.013" |
9.4 |
0.0150" |
0.0112" |
| 30 |
0.3046 |
0.0136" |
0.3150 |
0.0124" |
10.0 |
0.0140" |
0.0100" |
| 31 |
0.2539 |
0.010" |
0.2946 |
0.0116" |
- |
0.0132" |
0.0089" |
| 32 |
0.2286 |
0.009" |
0.2743 |
0.0108" |
- |
0.0128" |
0.0079" |
| 33 |
0.2031 |
0.008" |
0.2540 |
0.010" |
- |
0.0118" |
0.0070" |
| 34 |
0.1777 |
0.007" |
0.2337 |
0.0092" |
- |
0.0104" |
0.0063" |
| 35 |
0.1269 |
0.005" |
0.2134 |
0.0084" |
- |
0.0095" |
0.0056" |
| 36 |
0.1016 |
0.004" |
0.1930 |
0.0076" |
- |
0.0090" |
0.0050" |
| 37 |
- |
- |
0.1727 |
0.0068" |
- |
0.0085" |
0.0044" |
| 38 |
- |
- |
0.1524 |
0.0060" |
- |
0.0080" |
0.0039" |
| 39 |
- |
- |
0.1321 |
0.0052" |
- |
0.0075" |
0.0035" |
| 40 |
- |
- |
0.1219 |
0.0048" |
- |
0.0070" |
0.0031" |
| 41 |
- |
- |
0.112 |
0.0044" |
- |
0.0066" |
0.00280" |
| 42 |
- |
- |
0.102 |
0.0040" |
- |
0.0062" |
0.00249" |
| 43 |
- |
- |
0.091 |
0.0036" |
- |
0.0060" |
0.00222" |
| 44 |
- |
- |
0.081 |
0.0032" |
- |
0.0058" |
0.00198" |
| 45 |
- |
- |
0.071 |
0.0028" |
- |
0.0055" |
0.00176" |
| 46 |
- |
- |
0.061 |
0.0024" |
- |
0.0052" |
0.00157" |
| 47 |
- |
- |
0.051 |
0.0020" |
- |
0.0050" |
0.00140" |
| 48 |
- |
- |
0.041 |
0.0016" |
- |
0.0048" |
0.00124" |
| 49 |
- |
- |
0.030 |
0.0012" |
- |
0.0046" |
0.00111" |
| 50 |
- |
- |
0.025 |
0.0010" |
- |
0.0044" |
0.00099" |
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