A diagram of a UN straight flute multi-tooth thread mill designed to cut UN threads.

UN Multitooth Straight Flute Thread Mill

The UN Multitooth Straight Flute Thread Mill is engineered for efficient and accurate production of 2A/2B and 3A/3B Unified threads. Its straight flute design ensures excellent stability and precision, while the multitooth configuration allows for reduced cycle times without sacrificing thread quality. Constructed from solid carbide for maximum rigidity, this tool is ideal for both internal and external threading applications. An optional AlTiN+ coating is available to increase wear resistance, extend tool life, and support higher cutting speeds. Perfect for high-volume production, this thread mill delivers consistent performance in a wide range of materials.

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Minimum ID Thread/Pitch	A (Tool Diameter)	B (Length of Cut)	Q (Length)	S (Shank Diameter)	OAL	Flutes	Uncoated Tool #	Uncoated EDP #	AlTiN+ EDP #	TaC EDP #

4-40	0.080	0.210	0.011	0.250	2.50	3	TM080-40	101501	101675	130000
4-40	0.080	0.136	0.011	0.250	2.50	3	TM080-40S	102051	102189	130100
6-32	0.098	0.263	0.013	0.250	2.50	3	TM098-32	101504	101678	130001
6-32	0.098	0.201	0.013	0.250	2.50	3	TM098-32S	102054	102192	130101
6-40	0.098	0.260	0.011	0.250	2.50	3	TM098-40	101507	101681	130002
6-40	0.098	0.186	0.011	0.250	2.50	3	TM098-40S	102057	102195	130102
8-32	0.110	0.325	0.013	0.250	2.50	3	TM110-32	101510	101684	130003
8-32	0.110	0.232	0.013	0.250	2.50	3	TM110-32S	102060	102198	130103
8-36	0.110	0.345	0.012	0.250	2.50	3	TM110-36	101513	101687	130004
8-36	0.110	0.234	0.012	0.250	2.50	3	TM110-36S	102063	102201	130104
8-24	0.125	0.350	0.017	0.250	2.50	3	TM125-24	101516	101690	130005
8-24	0.125	0.226	0.017	0.250	2.50	3	TM125-24S	102066	102204	130105
8-32	0.125	0.355	0.013	0.250	2.50	3	TM125-32	101519	101693	130006
8-32	0.125	0.232	0.013	0.250	2.50	3	TM125-32S	102069	102207	130106
10-24	0.140	0.392	0.017	0.250	2.50	3	TM140-24	101522	101696	130007
10-24	0.140	0.268	0.017	0.250	2.50	3	TM140-24S	102072	102210	130107
10-28	0.140	0.409	0.015	0.250	2.50	3	TM140-28	101525	101699	130008
10-28	0.140	0.265	0.015	0.250	2.50	3	TM140-28S	102075	102213	130108
10-32	0.140	0.388	0.013	0.250	2.50	3	TM140-32	101528	101702	130009
10-32	0.140	0.263	0.013	0.250	2.50	3	TM140-32S	102078	102216	130109
10-48	0.140	0.383	0.009	0.250	2.50	3	TM140-48	101531	101705	130010
10-48	0.140	0.259	0.009	0.250	2.50	3	TM140-48S	102081	102219	130110
1/4-20	0.170	0.570	0.021	0.250	2.50	3	TM170-20	101534	101708	130011
1/4-20	0.170	0.371	0.021	0.250	2.50	3	TM170-20S	102084	102222	130111
1/4-24	0.170	0.559	0.017	0.250	2.50	3	TM170-24	101537	101711	130012
1/4-24	0.170	0.393	0.017	0.250	2.50	3	TM170-24S	102087	102225	130112
1/4-28	0.170	0.552	0.015	0.250	2.50	3	TM170-28	101540	101714	130013
1/4-28	0.170	0.372	0.015	0.250	2.50	3	TM170-28S	102090	102228	130113
1/4-32	0.170	0.545	0.013	0.250	2.50	3	TM170-32	101543	101717	130014
1/4-32	0.170	0.388	0.013	0.250	2.50	3	TM170-32S	102093	102231	130114
1/4-36	0.170	0.540	0.012	0.250	2.50	3	TM170-36	101546	101720	130015
1/4-36	0.170	0.373	0.012	0.250	2.50	3	TM170-36S	102096	102234	130115
1/4-20	0.187	0.570	0.021	0.250	2.50	3	TM187-20	101549	101723	130016
1/4-20	0.187	0.371	0.021	0.250	2.50	3	TM187-20S	102099	102237	130116
1/4-24	0.187	0.559	0.017	0.250	2.50	3	TM187-24	101552	101726	130017
1/4-24	0.187	0.393	0.017	0.250	2.50	3	TM187-24S	102102	102240	130117
1/4-28	0.187	0.551	0.015	0.250	2.50	3	TM187-28	101555	101729	130018
1/4-28	0.187	0.372	0.015	0.250	2.50	3	TM187-28S	102105	102243	130118
1/4-32	0.187	0.545	0.013	0.250	2.50	3	TM187-32	101558	101732	130019
1/4-32	0.187	0.388	0.013	0.250	2.50	3	TM187-32S	102108	102246	130119
1/4-36	0.187	0.540	0.012	0.250	2.50	3	TM187-36	101561	101735	130020
1/4-36	0.187	0.373	0.012	0.250	2.50	3	TM187-36S	102111	102249	130120
1/4-40	0.187	0.560	0.011	0.250	2.50	3	TM187-40	101564	101738	130021
1/4-40	0.187	0.386	0.011	0.250	2.50	3	TM187-40S	102114	102252	130121
1/4-48	0.187	0.551	0.009	0.250	2.50	3	TM187-48	101567	101741	130022
1/4-48	0.187	0.384	0.009	0.250	2.50	3	TM187-48S	102117	102255	130122
5/16-18	0.235	0.689	0.023	0.250	2.50	3	TM235-18	101570	101744	130023
5/16-20	0.235	0.670	0.021	0.250	2.50	3	TM235-20	101573	101747	130024
5/16-24	0.235	0.684	0.017	0.250	2.50	3	TM235-24	101576	101750	130025
5/16-28	0.235	0.657	0.015	0.250	2.50	3	TM235-28	101579	101753	130026
5/16-32	0.235	0.669	0.013	0.250	2.50	3	TM235-32	101582	101756	130027
5/16-40	0.235	0.660	0.011	0.250	2.50	3	TM235-40	101585	101759	130028
3/8-16	0.290	0.775	0.026	0.313	3.50	4	TM290-16	101777	101792	130029
3/8-20	0.290	0.820	0.021	0.313	3.50	4	TM290-20	101780	101795	130030
3/8-24	0.290	0.809	0.017	0.313	3.50	4	TM290-24	101783	101798	130031
3/8-27	0.290	0.794	0.015	0.313	3.50	4	TM290-27	101786	101801	130032
3/8-32	0.290	0.794	0.013	0.313	3.50	4	TM290-32	101789	101804	130033
7/16-14	0.345	0.816	0.030	0.375	3.50	4	TM345-14	101807	101837	130034
7/16-18	0.345	0.800	0.023	0.375	3.50	4	TM345-18	101810	101840	130035
7/16-20	0.345	0.821	0.021	0.375	3.50	4	TM345-20	101813	101843	130036
7/16-24	0.345	0.809	0.017	0.375	3.50	4	TM345-24	101816	101846	130037
7/16-28	0.345	0.800	0.015	0.375	3.50	4	TM345-28	101819	101849	130038
9/16-12	0.400	1.117	0.035	0.500	3.50	4	TM400-12	101852	101948	130039
1/2-13	0.400	1.108	0.032	0.500	3.50	4	TM400-13	101855	101951	130040
1/2-16	0.400	1.087	0.026	0.500	3.50	4	TM400-16	101858	101954	130041
1/2-20	0.400	1.120	0.021	0.500	3.50	4	TM400-20	101861	101957	130042
1/2-24	0.400	1.100	0.017	0.500	3.50	4	TM400-24	101864	101960	130043
1/2-28	0.400	1.087	0.015	0.500	3.50	4	TM400-28	101867	101963	130044
1/2-32	0.400	1.106	0.013	0.500	3.50	4	TM400-32	101870	101966	130045
3/4-10	0.450	1.140	0.042	0.500	3.50	4	TM450-10	101873	101969	130046
5/8-11	0.450	1.127	0.039	0.500	3.50	4	TM450-11	101876	101972	130047
5/8-12	0.450	1.117	0.035	0.500	3.50	4	TM450-12	101879	101975	130048
9/16-16	0.450	1.087	0.026	0.500	3.50	4	TM450-16	101882	101978	130049
9/16-18	0.450	1.134	0.023	0.500	3.50	4	TM450-18	101885	101981	130050
9/16-20	0.450	1.120	0.021	0.500	3.50	4	TM450-20	101888	101984	130051
3/4-12	0.490	1.117	0.035	0.500	3.50	6	TM490-12	101891	101987	130052
5/8-14	0.490	1.100	0.030	0.500	3.50	6	TM490-14	101894	101990	130053
5/8-16	0.490	1.087	0.026	0.500	3.50	6	TM490-16	101897	101993	130054
1.0-8	0.620	1.177	0.052	0.625	3.50	6	TM620-8	102005	102035	130058
7/8-9	0.620	1.157	0.046	0.625	3.50	6	TM620-9	102008	102038	130059
7/8-12	0.620	1.117	0.035	0.625	3.50	6	TM620-12	101996	102026	130055
7/8-14	0.620	1.100	0.030	0.625	3.50	6	TM620-14	101999	102029	130056
7/8-16	0.620	1.087	0.026	0.625	3.50	6	TM620-16	102002	102032	130057

How to Buy

Technical Support