OCHIAI Products are available from MARYLAND METRICS
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Toothed Lock Washer Internal Chart shows a selection of sizes available. For full specifications on the TOOTHED LOCK WASHER INTERNAL, click the download button.  Size No. Screw Size  Washer Dimensions d D t    AW -  2 M 2 2.2 4.8 0.3    AW -  2.3 M 2.3 2.5 5.3    AW -  2.5 M 2.5 2.7 5.7    AW -  3 M 3 3.2 6.5 0.45    AW -  3.5 M 3.5 3.7 7.5    AW -  4 M 4 4.3 8.5    AW -  4.5 M 4.5 4.8 9.5 0.5    AW -  5 M 5 5.3 10 0.6    AW -  6 M 6 6.4 11    AW -  7 M 7 7.4 13 0.8    AW -  8 M 8 8.4 15    AW - 3/8 3/8 (inch) 9.8 17.5 0.9    AW - 10 M 10 10.5 18    AW - 7/16 7/16 (inch) 11.4 19.5    AW - 12 M 12 12.5 21 1    AW - 1/2 1/2 (inch) 13 22.5    AW - 14 M 14 14.5 23    AW - 16 M 16 16.5 26 1.2    AW - 18 M 18 19 29    AW - 3/4 3/4 (inch) 19.6 32    AW - 20 M 20 21 32 1.4    AW - 22 M 22 23 35    AW - 24 M 24 25 38 1.6    AW - 1" 1" (inch) 26 41