DucCutters
DucCutters Custom Italian Motorcycles

Spanner Size Conversion Chart

Inches Millimeters Spanner
0.250   1/4 AF
0.276 7mm 7mm
0.313   5/16 AF
0.315 8mm 8mm
0.344   11/32 AF; 1/8 Wworth
0.354 9mm 9mm
0.375   3/8 AF
0.394 10mm 10mm
0.433 11mm 11mm
0.438   7/16 AF
0.445   3/16 Wworth; 1/4
0.472 12mm 12mm
0.500   1/2 AF
0.512 13mm  
0.525   1/4 Wworth; 5/16 BSF
0.551 14mm  
0.563   9/16 AF
0.591 15mm  
0.600   5/16 Wworth; 3/8 BSF
0.625   5/8 AF
0.630 16mm 16mm
0.669 17mm 17mm
0.686   11/16 AF
0.709 18mm 18mm
0.710   3/8 Wworth; 7/16 BSF
0.748 19mm 19mm
0.750   3/4 AF
0.787 20mm 20mm
0.813   13/16 AF
0.820   7/16 Wworth; 1/2 BSF
0.826 21mm 21mm
0.866 22mm 22mm
0.875   7/8 AF
0.905 23mm 23mm
0.920   1/2 Wworth; 9/16 BSF
0.938   15/16 AF
0.945 24mm 24mm
0.984 25mm 25mm
1.000   1in AF
1.010   9/16 Wworth; 5/8 BSF
1.024 26mm 26mm
1.063 27mm 1 1/16 AF; 27mm
1.100   5/16 Wworth; 11/16 BSF
1.125   1 1/8 AF
1.181 30mm 30mm
1.200   11/16 Wworth; 3/4 BSF
1.250   1 1/4 AF
1.260 32mm 32mm
1.300   3/4 Wworth; 7/8 BSF
1.313   1 5/16 AF
1.390   13/16 Wworth; 15/16 BSF
1.417 36mm 36mm
1.418   1 7/16 AF
1.480   7/8 Wworth; 1in BSF
1.500   1 1/2 AF
1.575 40mm 15/16 AF; 40mm exactly
1.614 41mm 41mm
1.625   1 5/8 AF
1.670   1 in Wworth; 1 1/8 BSF
1.688   1 11/16 AF
1.811 46mm 46mm
1.813   1 13/16 AF
1.860   1 1/8 Wworth; 1 1/4 BSF
1.875   1 7/8 AF
1.969 50mm 50mm
2.000   2in AF
2.050   1 1/4 Wworth; 1 3/8 BSF
2.165 55mm 55mm
2.362 60mm 60mm
 

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