Clock Keys Imperial, UK Made

Imperial Sizes - Made in UK

Clock Keys UK Sizes Imperial to Metric. (Numbering system for Indian made keys does not equal UK imperial number system).

UK Imperial Sizes:
000 (3/0) = Metric 2.00mm
00 (2/0) = Metric 2.20mm
0 (1/0) = Metric 2.40mm
1 = Metric 2.60mm
2 = Metric 2.80mm
3 = Metric 3.00mm
4 = Metric 3.20mm
5 = Metric 3.40mm
6 = Metric 3.60mm
7 = Metric 3.80mm
8 = Metric 4.00mm
9 = Metric 4.20mm
10 = Metric 4.40mm
11 = Metric 4.60mm
12 = Metric 4.80mm
13 = Metric 5.00mm
14 = Metric 5.20mm
15 = Metric 5.40mm
16 = Metric 5.60mm
17 = Metric 5.80mm
18 = Metric 6.00mm
19 = Metric 6.20mm
20 = Metric 6.40mm
21 = Metric 6.60mm

All clock keys are measured from flat side to flat side.

Best Quality UK Made Clock Keys

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