® Mill - Thread Inserts NPSM Pitch Insert Size = A TPI 12 14 21 30 40 18 Ext. 14 E 18 NPSM 18 Int. 12 I 18 NPSM 14 I 18 NPSM 14 Ext. 21 E 14 NPSM 14 Int. 14 I 14 NPSM 21 I 14 NPSM 11.5 Ext. 21 E 11.5 NPSM 30 E 11.5 NPSM 40 E 11.5 NPSM 11.5 Int. 21 I 11.5 NPSM 30 I 11.5 NPSM 40 I 11.5 NPSM 8 Ext. 30 E 8 NPSM 40 E 8 NPSM 8 Int. 30 I 8 NPSM 40 I 8 NPSM Order example: 21 I 11.5 NPSM MT7 PG - DIN 40430 Same Insert for External and Internal thread Pitch Insert Size = A TPI 14 21 30 14-18 PG 21-18 PG 18 (PG 9, 11, 13.5, 16) (PG 16) 21-16 PG 30-16 PG 16 (PG 21, 29, 36, 42, 48) (PG 36, 42, 48) Order example: 21-18 PG MT7 B01-8