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American Trademark Single End Key
Choose from 14 sizes and/or trademarks such as Ansonia, Chelsea, Gilbert, Ingraham, Kroeber, Ithaca, New Haven, Sessions, Schatz, Seth Thomas, Waterbury and Welch. Made of brass. Please measure the width of your winding post on your clock, in millimeters, to insure you select the correct size.
**QUANTITY DISCOUNTS ARE AVAILABLE FOR THIS ITEM. PLEASE SEE THE TABLE BELOW.**
$2.75
Choose from 14 sizes and/or trademarks such as Ansonia, Chelsea, Gilbert, Ingraham, Kroeber, Ithaca, New Haven, Sessions, Schatz, Seth Thomas, Waterbury and Welch. Made of brass. Please measure the width of your winding post on your clock, in millimeters, to insure you select the correct size.
Key Sizing Chart
| Key No. | American Sizes | Swiss Sizes | Watch Sizes |
|---|---|---|---|
| #00000 | 1.6mm | 1.25mm | |
| #0000 | 1.8mm | 1.50mm | |
| #000 | 2.0mm | 1.75mm | |
| #00 | 2.2mm | 2.00mm | 2.00mm |
| #0 | 2.4mm | 2.25mm | 1.90mm |
| #1 | 2.6mm | 2.50mm | 1.80mm |
| #2 | 2.8mm | 2.75mm | 1.75mm |
| #3 | 3.0mm | 3.00mm | 1.65mm |
| #4 | 3.2mm | 3.25mm | 1.60mm |
| #5 | 3.4mm | 3.50mm | 1.50mm |
| #6 | 3.6mm | 3.75mm | 1.40mm |
| #7 | 3.8mm | 4.00mm | 1.30mm |
| #8 | 4.0mm | 4.25mm | 1.20mm |
| #9 | 4.2mm | 4.50mm | 1.15mm |
| #10 | 4.4mm | 4.75mm | 1.05mm |
| #11 | 4.6mm | 5.00mm | 1.00mm |
| #12 | 4.8mm | 5.25mm | .95mm |
| #13 | 5.0mm | 5.50mm | |
| #14 | 5.2mm | 5.75mm | |
| #15 | 5.4mm | 6.00mm | |
| #16 | 5.6mm | 6.25mm | |
| #17 | 5.8mm | 6.50mm | |
| #18 | 6.0mm | 6.75mm | |
| #19 | 6.2mm | 7.00mm | |
| #20 | 6.4mm | 7.25mm | |
| #21 | 6.6mm | 7.50mm | |
| #22 | 6.8mm | 7.75mm | |
| #23 | 7.0mm | 8.00mm |
