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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

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