TN60252019441TN6025201934720193592071943 Threading Laydown Threading Threading Inserts P ⅷ M ⅷ ⅷ first choice K ⅷ ࠗ alternate choice N ࠗ S ⅷ „IR-PG H insert thread catalogue number RC EX E size pitch mm TPI TPF right hand 3IR16PG 0,11 1,1 0,8 3 — 16 — Round External „ER/L-RD insert thread catalogue number RC EX E size pitch mm TPI TPF right hand 3ER8RD 0,76 1,4 1,3 3 — 8 — 4ER6RD 1,01 1,5 1,7 4 — 6 — left hand 3EL8RD 0,76 1,4 1,3 3 — 8 — widia.com F65