CoreLine – Counterbore, DIN 373 ▲ with fixed pilot ▲ with 3 cutting edges, right-hand flutes for counterbores according to DIN 74 ▲ for countersinking to suit hexagon socket screws according to DIN 912, DIN 6912, DIN 7984 and cap screws according to DIN 84 N DC_2 DC_1 OAL DCONMS fine medium SIG 180° SIG 180° HSS HSS CX CX Thread DC_2 z9 DCONMS h9 OAL DC_1 e8 30 190 ... 30 191 ... mm mm mm mm M3 6 5,0 71 3,2 30190030 1) M3 6 5,0 71 3,4 30191030 1) M4 8 5,0 71 4,3 30190040 1) M4 8 5,0 71 4,5 30191040 1) M5 10 8,0 80 5,3 30190050 1) M5 10 8,0 80 5,5 30191050 1) M6 11 8,0 80 6,4 30190060 1) M6 11 8,0 80 6,6 30191060 1) M8 15 12,5 100 8,4 30190080 1) M8 15 12,5 100 9,0 30191080 1) M10 18 12,5 100 10,5 30190100 1) M10 18 12,5 100 11,0 30191100 1) M12 20 12,5 100 13,0 30190120 M12 20 12,5 100 13,5 30191120 P ● ● M ● ● K ● ● N ● ● S ○ ○ H O ● ● 1) Included in the set → Here you will find the cutting data standard values. 131 CoreLine – Counterbore, DIN 373 – Set Scope of supply: fine medium Counterbores M3; M4; M5; M6; M8; M10 in case N CX CX 30 190 ... 30 191 ... 30190999 30191999 Reaming and Countersinking HSS – Counterbores
