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TO FIT CHUCKS WITH 3MM x 60º SERRATIONS |
| CHUCK SIZE | CRITICAL DIMENSIONS | |||||||
| PART # | A | B | C | D | G | F | BOLT | |
| 12" HOWA HO7-MA-12 |
JN-143-M JN-143-A |
2-1/16 | 1.250 | 1.040 | .708 18MM |
.530 | 1.181 | 14MM 9/16-12 |
| 18" - 20" HOWA HOWA HO27M-18 |
JN-183-M JN-183-A |
3-1/4 | 1.575 | 1.339 | 1.022 26MM |
.669 | 1.968 | 20MM 3/4-10 |
| 18" KITAGAWA | JN-203-A | 3-1/4 | 1.375 | 1.375 | .984 | .500 | 1.907 | 3/4-10 |
| 21" KITAGAWA | JN-213-A | 3-3/4 | 1.375 | 1.375 | .984 | .500 | 3.362 | 3/4-10 |
| 24" KITAGAWA | JN-223-A | 4-3/4 | 1.375 | 1.375 | .984 | .500 | 3.150 | 3/4-10 |
| 15" - 18" MATSUMATO | JN-153-A | 3-5/32 | 1.500 | 1.330 | .864 | .750 | 1.960 | 3/4-10 |
| 12" PRATT BURNERD | JN-265-12 | 2-1/2 | 1.060 | 1.220 | .825 | .438 | 1.250 | 5/8-11 |