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Comparison Of Us, Metric And Whitworth Wrenches


US Metric Whitworth Dec Min
Open End
Max
Open End
Min
Socket
Max
Socket
5/32 0.156 0.158 0.161 0.158 0.163
4mm 0.157 0.159 0.162 0.159 0.164
7BA 0.172 0.774 0.177 0.174 0.179
3/16 0.187 0.19 0.193 0.19 0.195
6BA 0.193 0.795 0.198 0.195 0.2
5mm 0.197 0.199 0.02 0.199 0.2
13/64 0.203 0.205 0.208 0.205 0.21
7/32 0.218 0.221 0.224 0.221 0.226
5BA 0.22 0.222 0.225 0.222 0.227
15/63 0.234 0.236 0.239 0.236 0.241
6mm 0.236 0.238 0.241 0.238 0.243
4BA 0.248 0.25 0.025 0.25 0.255
1/4 0.25 0.252 0.255 0.252 0.757
17/64 0.265 0.268 0.271 0.268 0.273
7mm 0.276 0.278 0.281 0.278 0.283
9/32 0.281 0.284 0.288 0.284 0.29
3BA 0.282 0.284 0.288 0.284 0.289
5/16 0.312 0.316 0.32 0.316 0.322
8mm 0.315 0.317 0.321 0.317 0.322
2BA 0.324 0.327 0.331 0.327 0.333
1/8W 0.338 0.341 0.345 0.341 0.347
11/32 0.343 0.347 0.351 0.347 0.353
9mm 0.354 0.357 0.361 0.357 0.363
1BA 0.365 0.363 0.372 0.368 0.374
3/8 0.375 0.378 0.382 0.378 0.381
10mm 0.393 0.396 0.4 0.396 0.402
0BA 0.413 0.416 0.42 0.416 0.422
11mm 0.433 0.436 0.44 0.436 0.442
7/16 0.437 0.44 0.444 0.44 0.446
3/16W 0.448 0.451 0.455 0.451 0.457
15/32 0.468 0.472 0.476 0.472 0.478
12mm 0.472 0.475 0.479 0.475 0.481
1/2 0.5 0.504 0.508 0.504 0.51
13mm 0.512 0.516 0.52 0.516 0.522
1/4W 0.525 0.529 0.533 0.529 0.535
17/32 0.531 0.535 0.539 0.535 0.541
14mm 0.551 0.555 0.559 0.555 0.561
9/16 0.562 0.566 0.57 0.566 0.573
15mm 0.591 0.595 0.549 0.595 0.601
19/32 0.593 0.598 0.602 0.598 0.604
5/16W 0.6 0.604 0.608 0.604 0.612
5/8 0.625 0.629 0.633 0.629 0.636
16mm 0.63 0.634 0.638 0.634 0.642
21/32 0.656 0.661 0.665 0.661 0.668
17mm 0.669 0.673 0.677 0.673 0.681
11/16 0.687 0.692 0.696 0.692 0.699
18mm 0.709 0.715 0.72 0.715 0.723
3/8W 0.71 0.715 0.72 0.715 0.723
19mm 0.748 0.753 0.758 0.753 0.761
3/4 0.75 0.755 0.76 0.755 0.753
25/32 0.781 0.786 0.79I 0.786 0.794
20mm 0.787 0.792 0.797 0.792 0.8
13/16 0.812 0.818 0.823 0.818 0.826
7/16W 0.82 0.825 0.83 0.825 0.833
21mm 0.827 0.832 0.837 0.832 0.84
22mm 0.866 0.871 0.876 0.871 0.879
7/8 0.875 0.88 0.885 0.88 0.888
23mm 0.906 0.911 0.916 0.911 0.92
29/32 0.906 0.911 0.916 0.911 0.92
1/2W 0.92 0.925 0.93 0.925 0.934
15/16 0.937 0.944 0.949 0.944 0.953
24mm 0.945 0.95 0.955 0.95 0.959
31/32 0.968 0.975 0.981 0.975 0.984
25mm 0.984 0.99 0.996 0.99 0.999
1 1 1.006 1.012 1.006 1.015
9/16W 1.01 1.016 1.022 1.016 1.025
26mm 1.024 1.03 1.036 1.03 1.039
1 1/16 1.062 1.068 1.074 1.068 1.077
27mm 1.063 1.069 1.075 1.069 1.078
5/8W 1.1 1.107 1.113 1.107 1.117
28mm 1.102 1.109 1.115 1.109 1.119
1 1/8 1.125 1.132 1.139 1.132 1.142
29mm 1.142 1.149 1.156 1.149 1.159
30mm 1.181 1.188 1.195 1.188 1.198
1 3/16 1.187 1.195 1.202 1.195 1.205
1 1/16W 1.2 1.207 1.214 1.207 1.217
31mm 1.22 1.727 1.234 1.227 1.237
1 1/4 1.25 1.258 1.266 1.258 1.269
32mm 1.26 1.267 1.275 1.267 1.277
33mm 1.299 1.306 1.314 1.306 1.31


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