Left Hand Threading Tools

A technical drawing of a left hand threading tool with dimensional callouts.

Our left-hand threading tools are engineered for high precision and exceptional performance in demanding applications. Designed with a 60° thread form, these tools are perfect for cutting UN, ISO, and NPT threads with ease and accuracy. Available in uncoated and coated versions, the AlTiN+ coating significantly extends tool life, providing enhanced durability and resistance to wear, even under high-speed machining conditions. Featuring a precision ground shank flat, these tools ensure proper tool orientation, reducing setup time and improving consistency. Ideal for complex threading tasks, our left-hand threading tools offer the reliability, longevity, and precision you need for superior results.

How to Buy

Technical Support

A (Minimum Bore)	B (Max Depth)	O (Minimum Offset)	Recommended Threads Per Inch	Q	S (Shank Diameter)	OAL	Tool #	Uncoated EDP #	AlTiN+ EDP #

0.04	0.080	0.013	56 to 80	0.009	0.125	1.50	LHTT040080	231501	231603
0.04	0.100	0.013	56 to 80	0.009	0.125	1.50	LHTT040100	231504	231606
0.04	0.130	0.013	56 to 80	0.009	0.125	1.50	LHTT040130	231507	231609
0.05	0.100	0.017	48 to 80	0.012	0.125	1.50	LHTT050100	231510	231612
0.05	0.150	0.017	48 to 80	0.012	0.125	1.50	LHTT050150	231513	231615
0.05	0.200	0.017	48 to 80	0.012	0.125	1.50	LHTT050200	231516	231618
0.06	0.150	0.020	40 to 80	0.014	0.125	1.50	LHTT060150	231519	231621
0.06	0.200	0.020	40 to 80	0.014	0.125	1.50	LHTT060200	231522	231624
0.06	0.250	0.020	40 to 80	0.014	0.125	1.50	LHTT060250	231525	231627
0.06	0.300	0.020	40 to 80	0.014	0.125	1.50	LHTT060300	231528	231630
0.075	0.200	0.020	36 to 72	0.014	0.125	1.50	LHTT075200	231531	231633
0.075	0.300	0.020	36 to 72	0.014	0.125	1.50	LHTT075300	231534	231636
0.075	0.400	0.020	36 to 72	0.014	0.125	1.50	LHTT075400	231537	231639
0.09	0.200	0.025	32 to 64	0.017	0.125	1.50	LHTT090200	231540	231642
0.09	0.300	0.025	32 to 64	0.017	0.125	1.50	LHTT090300	231543	231645
0.09	0.400	0.025	32 to 64	0.017	0.125	1.50	LHTT090400	231546	231648
0.09	0.500	0.025	32 to 64	0.017	0.125	1.50	LHTT090500	231549	231651
0.12	0.250	0.030	24 to 56	0.021	0.188	2.00	LHTT120250	231654	231696
0.12	0.400	0.030	24 to 56	0.021	0.188	2.00	LHTT120400	231657	231699
0.12	0.600	0.030	24 to 56	0.021	0.188	2.00	LHTT120600	231660	231702
0.12	0.750	0.030	24 to 56	0.021	0.188	2.00	LHTT120750	231663	231705
0.15	0.350	0.035	20 to 56	0.023	0.188	2.00	LHTT150350	231666	231708
0.15	0.500	0.035	20 to 56	0.023	0.188	2.00	LHTT150500	231669	231711
0.15	0.750	0.035	20 to 56	0.023	0.188	2.00	LHTT150750	231672	231714
0.18	0.350	0.040	18 to 56	0.027	0.250	2.50	LHTT180350	231720	231768
0.18	0.500	0.040	18 to 56	0.027	0.250	2.50	LHTT180500	231723	231771
0.18	0.750	0.040	18 to 56	0.027	0.250	2.50	LHTT180750	231726	231774
0.18	1.000	0.040	18 to 56	0.027	0.250	2.50	LHTT1801000	231717	231765
0.2	0.400	0.045	16 to 40	0.029	0.250	2.50	LHTT200400	231732	231780
0.2	0.600	0.045	16 to 40	0.029	0.250	2.50	LHTT200600	231735	231783
0.2	0.800	0.045	16 to 40	0.029	0.250	2.50	LHTT200800	231738	231786
0.2	1.000	0.045	16 to 40	0.029	0.250	2.50	LHTT2001000	231729	231777
0.23	0.400	0.055	14 to 40	0.038	0.313	2.50	LHTT230400	231795	231855
0.23	0.600	0.055	14 to 40	0.038	0.313	2.50	LHTT230600	231798	231858
0.23	0.750	0.055	14 to 40	0.038	0.313	2.50	LHTT230750	231801	231861
0.23	1.000	0.055	14 to 40	0.038	0.313	2.50	LHTT2301000	231789	231849
0.23	1.250	0.055	14 to 40	0.038	0.313	2.50	LHTT2301250	231792	231852
0.29	0.500	0.070	12 to 40	0.047	0.313	2.50	LHTT290500	231813	231873
0.29	0.750	0.070	12 to 40	0.047	0.313	2.50	LHTT290750	231816	231876
0.29	1.000	0.070	12 to 40	0.047	0.313	2.50	LHTT2901000	231804	231864
0.29	1.250	0.070	12 to 40	0.047	0.313	2.50	LHTT2901250	231807	231867
0.29	1.500	0.070	12 to 40	0.047	0.313	3.00	LHTT2901500	231810	231870
0.32	0.500	0.075	10 to 32	0.049	0.375	2.50	LHTT320500	231888	231942
0.32	0.750	0.075	10 to 32	0.049	0.375	2.50	LHTT320750	231891	231945
0.32	1.000	0.075	10 to 32	0.049	0.375	2.50	LHTT3201000	231879	231933
0.32	1.250	0.075	10 to 32	0.049	0.375	2.50	LHTT3201250	231882	231936
0.32	1.500	0.075	10 to 32	0.049	0.375	3.00	LHTT3201500	231885	231939
0.36	0.500	0.080	8 to 32	0.057	0.375	2.50	LHTT360500	231900	231954
0.36	0.750	0.080	8 to 32	0.057	0.375	2.50	LHTT360750	231903	231957
0.36	1.000	0.080	8 to 32	0.057	0.375	2.50	LHTT3601000	231894	231948
0.36	1.250	0.080	8 to 32	0.057	0.375	2.50	LHTT3601250	231897	231951
0.36	1.500	0.080	8 to 32	0.057	0.375	3.00	LHTT3601500	231899	231953
0.36	1.800	0.080	8 to 32	0.057	0.375	3.00	LHTT3601800	231960	231966
0.49	0.750	0.120	8 to 32	0.077	0.500	3.00	LHTT490750	231975	231993
0.49	1.500	0.120	8 to 32	0.077	0.500	3.00	LHTT4901500	231969	231987
0.49	2.000	0.120	8 to 32	0.077	0.500	3.50	LHTT4902000	231972	231990

How to Buy

Technical Support