Solid Carbide Thread Mills
No. 10, No. 12 x 24 TPI UN Internal Mini Thread Mill 2xD – Carmex MTS 06035 C10 24 UN MT7
SKU: MTS06035C1024UNMT7
M4, M5 x 0.5 Metric Internal Mini Thread Mill 2xD – Carmex MTS 06034 D8 0.5 ISO MT7
SKU: MTS06034D80.5ISOMT7
M4.5, M5 x 0.75 Metric Internal Mini Thread Mill 2xD – Carmex MTS 06034 C9 0.75 ISO MT7
SKU: MTS06034C90.75ISOMT7
No. 8 x 32 TPI UN Internal Mini Thread Mill 2xD Long 105mm – Carmex MTS 06032 C9 32 UN-L MT7
SKU: MTS06032C932UN-LMT7
M4 x 0.7 Metric Internal Mini Thread Mill 2xD – Carmex MTS 06031 C9 0.7 ISO MT7
SKU: MTS06031C90.7ISOMT7
No. 6 x 32 TPI UN Internal Mini Thread Mill 2xD – Carmex MTS 06025 C7 32 UN MT7
SKU: MTS06025C732UNMT7
No. 5, No. 6 x 40 TPI UN Internal Mini Thread Mill 2xD – Carmex MTS 06024 C7 40 UN MT7
SKU: MTS06024C740UNMT7
No. 4 x 40 TPI UN Internal Mini Thread Mill 3xD Long 105mm – Carmex MTS 06021 C8 40 UN-L MT7
SKU: MTS06021C840UN-LMT7
No. 4 x 40 TPI UN Internal Mini Thread Mill 2xD Long 105mm – Carmex MTS 06021 C6 40 UN-L MT7
SKU: MTS06021C640UN-LMT7
No. 2, No. 3 x 56 TPI UN Internal Mini Thread Mill 3xD Long 105mm – Carmex MTS 06016 C6 56 UN-L MT7
SKU: MTS06016C656UN-LMT7
M2 x 0.4 Metric Internal Mini Thread Mill 2xD – Carmex MTS 06016 C4 0.4 ISO MT7
SKU: MTS06016C40.4ISOMT7
M2 x 0.4 Metric Internal Mini Thread Mill 2xD Long 105mm – Carmex MTS 06016 C4 0.4 ISO-L MT7
SKU: MTS06016C40.4ISO-LMT7
No. 1, No. 2 x 64 TPI UN Internal Mini Thread Mill 2xD – Carmex MTS 06014 C3 64 UN MT7
SKU: MTS06014C364UNMT7
No. 0 x 80 TPI UN Internal Mini Thread Mill 3xD – Carmex MTS 06012 C4 80 UN MT7
SKU: MTS06012C480UNMT7
No. 4 x 40 TPI UN Internal Mini Thread Mill 3xD – Carmex MTS 03021 C8 40 UN MT7
SKU: MTS03021C840UNMT7
No. 2, No. 3 x 56 TPI UN Internal Mini Thread Mill 3xD – Carmex MTS 03016 C6 56 UN MT7
SKU: MTS03016C656UNMT7
M1.6, M1.8 x 0.35 Metric Internal Dental Mini Thread Mill – Carmex MTS 03012 C5 0.35 ISO-N8 MT11
SKU: MTS03012C50.35ISON8MT11
2 mm Pitch Metric Internal Long Reach Thread Mill – Carmex MTQ 2020 F56 2.0 ISO MT7
SKU: MTQ2020F562.0ISOMT7
1.5 mm Pitch Metric Internal Long Reach Thread Mill – Carmex MTQ 1616 F43 1.5 ISO MT7
SKU: MTQ1616F431.5ISOMT7
60° Partial Profile Int 1.0–1.75 mm Pitch Internal & External Thread Mill – Carmex MTI 1212 E39 A60 MT8
SKU: MTI1212E39A60MT8
Tr14 x 3 to Tr22 x 3 Trapezoidal Internal Thread Mill 2xD – Carmex MTI 10089 D29 3 TR MT8
SKU: MTI10089D293TRMT8
60° Partial Profile Int 0.5–0.8 mm Pitch Internal & External Thread Mill – Carmex MTI 0605 D20 A60 MT8
SKU: MTI0605D20A60MT8
60° Partial Profile 0.5–1.0 mm Pitch Internal & External Thread Mill – Carmex MTI 06032 C9 A60 MT11
SKU: MTI06032C9A60MT11
3/4-6, 7/8-6 Acme Internal Thread Mill 1.5xD – Carmex MTI 0500 D12 6 ACME MT8
SKU: MTI0500D126ACMEMT8
5/8-8 Acme Internal Thread Mill 1.5xD – Carmex MTI 0500 D11 8 ACME MT8
SKU: MTI0500D118ACMEMT8
M2 x 0.4 Metric Internal Thread Mill 3.5xD – Carmex MTI 03016 C7 0.4 ISO MT11
SKU: MTI03016C70.4ISOMT11
60° Partial Profile 0.25–0.35 mm Pitch Internal & External Thread Mill – Carmex MTI 03012 C3 A60 MT11
SKU: MTI03012C3A60MT11
M1.2 x 0.25 Metric Internal Thread Mill 3.5xD – Carmex MTI 03009 C4 0.25 ISO MT11
SKU: MTI03009C40.25ISOMT11
7/16, 7/8 x 14 TPI UN Internal Hardcut Thread Mill – Carmex MTH 10085 D20 14 UN MT11
SKU: MTH10085D2014UNMT11
M8 x 1.25 Metric Internal Drill Thread Mill – Carmex MTD 10064 B15 1.25 ISO MT7
SKU: MTD10064B151.25ISOMT7
M6 x 1 Metric Internal Drill Thread Mill – Carmex MTD 08048 B12 1.0 ISO MT7
SKU: MTD08048B121.0ISOMT7
M5 x 0.8 Metric Internal Drill Thread Mill – Carmex MTD 0604 B9 0.8 ISO MT7
SKU: MTD0604B90.8ISOMT7
No. 1 x 8 TPI UN Internal Coolant Bore Thread Mill – Carmex MTB 20195 D42 8 UN MT7
SKU: MTB20195D428UNMT7
3/4 x 10 TPI UN Internal Coolant Bore Thread Mill – Carmex MTB 16147 E49 10 UN MT7
SKU: MTB16147E4910UNMT7
5/8–11/16 BSW 14 TPI Internal & External Coolant Bore Thread Mill – Carmex MTB 14128 E31 14 W MT7
SKU: MTB14128E3114WMT7
9/16–5/8, No. 1, 1/8–1, 5/8 x 18 TPI UN Internal Coolant Bore Thread Mill – Carmex MTB 12113 D26 18 UN MT7
SKU: MTB12113D2618UNMT7
M12, M14 x 0.75 Metric Internal Coolant Bore Thread Mill – Carmex MTB 1010 D24 0.75 ISO MT7
SKU: MTB1010D240.75ISOMT7
Pg 7 20 TPI Internal & External Coolant Bore Thread Mill – Carmex MTB 1010 D19 20 PG MT7
SKU: MTB1010D1920PGMT7
M12 x 1.75 Metric Internal Coolant Bore Thread Mill – Carmex MTB 1009 C28 1.75 ISO MT7
SKU: MTB1009C281.75ISOMT7
1/2 x 13 TPI UN Internal Coolant Bore Thread Mill – Carmex MTB 10098 D32 13 UN MT7
SKU: MTB10098D3213UNMT7
7/16–1/2 x 20 TPI UN Internal Coolant Bore Thread Mill – Carmex MTB 0808 C21 20 UN MT7
SKU: MTB0808C2120UNMT7
M10, M12 x 1.5 Metric Internal Coolant Bore Thread Mill – Carmex MTB 08078 C24 1.5 ISO MT7
SKU: MTB08078C241.5ISOMT7
G1/8 BSP 28 TPI Internal & External Coolant Bore Thread Mill – Carmex MTB 08078 C14 28 W MT7
SKU: MTB08078C1428WMT7
3/8 BSW 20 TPI Internal & External Coolant Bore Thread Mill – Carmex MTB 08076 D19 20 W MT7
SKU: MTB08076D1920WMT7
3/8 x 16 TPI UN Internal Coolant Bore Thread Mill – Carmex MTB 08074 C24 16 UN MT7
SKU: MTB08074C2416UNMT7
5/16 x 32 TPI UN Internal Coolant Bore Thread Mill – Carmex MTB 0606 C14 32 UN MT7
SKU: MTB0606C1432UNMT7
M8 x 1 Metric Internal Coolant Bore Thread Mill – Carmex MTB 0606 C12 1.0 ISO MT7
SKU: MTB0606C121.0ISOMT7
5/16 BSW 18 TPI Internal & External Coolant Bore Thread Mill – Carmex MTB 06056 C16 18 W MT7
SKU: MTB06056C1618WMT7
M6 x 1 Metric Internal Coolant Bore Thread Mill – Carmex MTB 06046 C14 1.0 ISO MT7
SKU: MTB06046C141.0ISOMT7
M6, M8 x 0.75 Metric Internal Coolant Bore Thread Mill – Carmex MTB 06045 C10 0.75 ISO MT7
SKU: MTB06045C100.75ISOMT7
Solid carbide thread mills for CNC machining in steel, stainless, aluminium and exotic alloys. The range covers ISO metric, UNF, UNC, NPT and specialist thread forms — single-flute for small-diameter and fine-pitch threads, multi-flute for faster cycle times in larger thread sizes. UK stock, same-day dispatch before 4.30pm.
Thread mills produce threads by helical interpolation on a machining centre. One tool covers multiple thread sizes by adjusting the interpolation radius in the program — no tool change needed for size variation. Lower cutting forces than tapping, no breakage risk in blind holes, and the thread size can be corrected by adjusting the toolpath offset without changing tooling.
Sizes in stock cover M2 to M36 and inch equivalents. Full-profile thread mills cut the complete thread form in a single helical pass. Multi-form variants make multiple passes to full thread depth — suited to deep thread lengths or tougher materials where tool load needs to be managed across passes.
