Solid Carbide Thread Mills

789 items
M16, M17–M23 x 2 Metric Internal 3-in-1 Drill Thread Mill 2xD – Carmex DMT 12118 D35 2.0 ISO MT7

M16, M17–M23 x 2 Metric Internal 3-in-1 Drill Thread Mill 2xD – Carmex DMT 12118 D35 2.0 ISO MT7

SKU: DMT12118D352.0ISOMT7

Size M16 M17 - M23
Pitch 2
Reach 35
Shank Diameter 12
Overall Length 84
£231.72 ex VAT
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1/2 x 13 TPI UN Internal 3-in-1 Drill Thread Mill 2xD – Carmex DMT 1010 D29 13 UN MT7

1/2 x 13 TPI UN Internal 3-in-1 Drill Thread Mill 2xD – Carmex DMT 1010 D29 13 UN MT7

SKU: DMT1010D2913UNMT7

Size 1/2
Pitch 13
Reach 29.8
Shank Diameter 10
Overall Length 73
£187.08 ex VAT
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M12 x 1.75 Metric Internal 3-in-1 Drill Thread Mill 2xD – Carmex DMT 1009 D26 1.75 ISO MT7

M12 x 1.75 Metric Internal 3-in-1 Drill Thread Mill 2xD – Carmex DMT 1009 D26 1.75 ISO MT7

SKU: DMT1009D261.75ISOMT7

Size M12
Pitch 1.75
Reach 26
Shank Diameter 10
Overall Length 73
£187.08 ex VAT
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M10, M13–M15 x 1.5 Metric Internal 3-in-1 Drill Thread Mill 2xD – Carmex DMT 08078 D23 1.5 ISO MT7

M10, M13–M15 x 1.5 Metric Internal 3-in-1 Drill Thread Mill 2xD – Carmex DMT 08078 D23 1.5 ISO MT7

SKU: DMT08078D231.5ISOMT7

Size M10 M13 - M15
Pitch 1.5
Reach 23
Shank Diameter 8
Overall Length 64
£144.56 ex VAT
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5/16–7/16 x 18 TPI UN Internal 3-in-1 Drill Thread Mill 2xD – Carmex DMT 0806 D17 18 UN MT7

5/16–7/16 x 18 TPI UN Internal 3-in-1 Drill Thread Mill 2xD – Carmex DMT 0806 D17 18 UN MT7

SKU: DMT0806D1718UNMT7

Size 5/16 - 7/16
Pitch 18
Reach 17
Shank Diameter 8
Overall Length 64
£144.56 ex VAT
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3/8–1/2 x 16 TPI UN Internal 3-in-1 Drill Thread Mill 2xD – Carmex DMT 08067 C22 16 UN MT7

3/8–1/2 x 16 TPI UN Internal 3-in-1 Drill Thread Mill 2xD – Carmex DMT 08067 C22 16 UN MT7

SKU: DMT08067C2216UNMT7

Size 3/8 - 1/2
Pitch 16
Reach 22
Shank Diameter 8
Overall Length 64
£144.56 ex VAT
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5/16–1/2 x 24 TPI UN Internal 3-in-1 Drill Thread Mill 2xD – Carmex DMT 08065 D17 24 UN MT7

5/16–1/2 x 24 TPI UN Internal 3-in-1 Drill Thread Mill 2xD – Carmex DMT 08065 D17 24 UN MT7

SKU: DMT08065D1724UNMT7

Size 5/16 - 1/2
Pitch 24
Reach 17
Shank Diameter 8
Overall Length 64
£108.44 ex VAT
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M8, M9, M10, M12 x 1.25 Metric Internal 3-in-1 Drill Thread Mill 2xD – Carmex DMT 08061 D18 1.25 ISO MT7

M8, M9, M10, M12 x 1.25 Metric Internal 3-in-1 Drill Thread Mill 2xD – Carmex DMT 08061 D18 1.25 ISO MT7

SKU: DMT08061D181.25ISOMT7

Size M8 M9 M10 M12
Pitch 1.25
Reach 18
Shank Diameter 8
Overall Length 64
£144.56 ex VAT
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1/4–3/8 x 20 TPI UN Internal 3-in-1 Drill Thread Mill 2xD – Carmex DMT 08048 C14 20 UN MT7

1/4–3/8 x 20 TPI UN Internal 3-in-1 Drill Thread Mill 2xD – Carmex DMT 08048 C14 20 UN MT7

SKU: DMT08048C1420UNMT7

Size 1/4 - 3/8
Pitch 20
Reach 14
Shank Diameter 8
Overall Length 64
£144.56 ex VAT
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M6, M7, M8, M9 x 1 Metric Internal 3-in-1 Drill Thread Mill 2xD – Carmex DMT 08047 C14 1.0 ISO MT7

M6, M7, M8, M9 x 1 Metric Internal 3-in-1 Drill Thread Mill 2xD – Carmex DMT 08047 C14 1.0 ISO MT7

SKU: DMT08047C141.0ISOMT7

Size M6 M7 M8 M9
Pitch 1
Reach 14
Shank Diameter 8
Overall Length 64
£144.56 ex VAT
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No. 8 x 36 TPI UN Internal 3-in-1 Drill Thread Mill 2.5xD – Carmex DMT 06033 C12 36 UN-D MT7

No. 8 x 36 TPI UN Internal 3-in-1 Drill Thread Mill 2.5xD – Carmex DMT 06033 C12 36 UN-D MT7

SKU: DMT06033C1236UN-DMT7

Size No. 8
Pitch 36
Reach 12
Shank Diameter 6
Overall Length 58
£108.44 ex VAT
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No. 8 x 32 TPI UN Internal 3-in-1 Drill Thread Mill 2.5xD – Carmex DMT 06032 C12 32 UN-D MT7

No. 8 x 32 TPI UN Internal 3-in-1 Drill Thread Mill 2.5xD – Carmex DMT 06032 C12 32 UN-D MT7

SKU: DMT06032C1232UN-DMT7

Size No. 8
Pitch 32
Reach 12.3
Shank Diameter 6
Overall Length 58
£108.44 ex VAT
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M4 x 0.7 Metric Internal 3-in-1 Drill Thread Mill 2.5xD – Carmex DMT 06032 C11 0.7 ISO-D MT7

M4 x 0.7 Metric Internal 3-in-1 Drill Thread Mill 2.5xD – Carmex DMT 06032 C11 0.7 ISO-D MT7

SKU: DMT06032C110.7ISO-DMT7

Size M4
Pitch 0.7
Reach 11.6
Shank Diameter 6
Overall Length 58
£108.44 ex VAT
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3/4 x 16 TPI UN Internal Aluminium Thread Mill – Carmex AMT 1616 E38 16 UN K20

3/4 x 16 TPI UN Internal Aluminium Thread Mill – Carmex AMT 1616 E38 16 UN K20

SKU: AMT1616E3816UNK20

Size 3/4
Pitch 16
Flute Length 38.9
Reach 38.9
Overall Length 105
£228.88 ex VAT
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9/16–5/8, No. 1, 1/8, –, No. 1, 5/8 x 18 TPI UN Internal Aluminium Thread Mill – Carmex AMT 1212 D30 18 UN K20

9/16–5/8, No. 1, 1/8, –, No. 1, 5/8 x 18 TPI UN Internal Aluminium Thread Mill – Carmex AMT 1212 D30 18 UN K20

SKU: AMT1212D3018UNK20

Size 9/16 - 5/8 1 1/8 - 1 5/8
Pitch 18
Flute Length 30.3
Reach 30.3
Overall Length 84
£194.02 ex VAT
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M14 x 1.5 Metric Internal Aluminium Thread Mill – Carmex AMT 12112 D29 1.5 ISO K20

M14 x 1.5 Metric Internal Aluminium Thread Mill – Carmex AMT 12112 D29 1.5 ISO K20

SKU: AMT12112D291.5ISOK20

Size M14
Pitch 1.5
Flute Length 29.3
Reach 29.3
Overall Length 84
£155.06 ex VAT
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M10 x 1.5 Metric Internal Aluminium Chamfering Thread Mill – Carmex AMT 1208 C21 1.5 ISO-C K20

M10 x 1.5 Metric Internal Aluminium Chamfering Thread Mill – Carmex AMT 1208 C21 1.5 ISO-C K20

SKU: AMT1208C211.5ISO-CK20

Size M10
Pitch 1.5
Flute Length 21.8
Reach 21.8
Overall Length 84
£198.16 ex VAT
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3/8 x 16 TPI UN Internal Aluminium Chamfering Thread Mill – Carmex AMT 12074 C21 16 UN-C K20

3/8 x 16 TPI UN Internal Aluminium Chamfering Thread Mill – Carmex AMT 12074 C21 16 UN-C K20

SKU: AMT12074C2116UN-CK20

Size 3/8
Pitch 16
Flute Length 21.4
Reach 21.4
Overall Length 84
£198.16 ex VAT
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M12 x 1.75 Metric Internal Aluminium Thread Mill – Carmex AMT 10095 D25 1.75 ISO K20

M12 x 1.75 Metric Internal Aluminium Thread Mill – Carmex AMT 10095 D25 1.75 ISO K20

SKU: AMT10095D251.75ISOK20

Size M12
Pitch 1.75
Flute Length 25.4
Reach 25.4
Overall Length 73
£155.06 ex VAT
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7/16 x 20 TPI UN Internal Aluminium Thread Mill – Carmex AMT 10092 C23 20 UN K20

7/16 x 20 TPI UN Internal Aluminium Thread Mill – Carmex AMT 10092 C23 20 UN K20

SKU: AMT10092C2320UNK20

Size 7/16
Pitch 20
Flute Length 23.5
Reach 23.5
Overall Length 73
£155.06 ex VAT
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5/16 x 18 TPI UN Internal Aluminium Chamfering Thread Mill – Carmex AMT 1006 C17 18 UN-C K20

5/16 x 18 TPI UN Internal Aluminium Chamfering Thread Mill – Carmex AMT 1006 C17 18 UN-C K20

SKU: AMT1006C1718UN-CK20

Size 5/16
Pitch 18
Flute Length 17.6
Reach 17.6
Overall Length 73
£158.40 ex VAT
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M8, M10 x 1.25 Metric Internal Aluminium Chamfering Thread Mill – Carmex AMT 10064 C16 1.25 ISO-C K20

M8, M10 x 1.25 Metric Internal Aluminium Chamfering Thread Mill – Carmex AMT 10064 C16 1.25 ISO-C K20

SKU: AMT10064C161.25ISO-CK20

Size M8 M10
Pitch 1.25
Flute Length 16.9
Reach 16.9
Overall Length 73
£158.40 ex VAT
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M10 x 1 Metric Internal Aluminium Thread Mill – Carmex AMT 0808 D21 1.0 ISO K20

M10 x 1 Metric Internal Aluminium Thread Mill – Carmex AMT 0808 D21 1.0 ISO K20

SKU: AMT0808D211.0ISOK20

Size M10
Pitch 1
Flute Length 21.5
Reach 21.5
Overall Length 64
£134.42 ex VAT
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3/8, 9/16–5/8 x 24 TPI UN Internal Aluminium Thread Mill – Carmex AMT 0808 D20 24 UN K20

3/8, 9/16–5/8 x 24 TPI UN Internal Aluminium Thread Mill – Carmex AMT 0808 D20 24 UN K20

SKU: AMT0808D2024UNK20

Size 3/8 9/16 - 5/8
Pitch 24
Flute Length 20.6
Reach 20.6
Overall Length 64
£134.42 ex VAT
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M10 x 1.5 Metric Internal Aluminium Thread Mill – Carmex AMT 0808 C21 1.5 ISO K20

M10 x 1.5 Metric Internal Aluminium Thread Mill – Carmex AMT 0808 C21 1.5 ISO K20

SKU: AMT0808C211.5ISOK20

Size M10
Pitch 1.5
Flute Length 21.8
Reach 21.8
Overall Length 64
£134.42 ex VAT
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3/8 x 16 TPI UN Internal Aluminium Thread Mill – Carmex AMT 08074 C21 16 UN K20

3/8 x 16 TPI UN Internal Aluminium Thread Mill – Carmex AMT 08074 C21 16 UN K20

SKU: AMT08074C2116UNK20

Size 3/8
Pitch 16
Flute Length 21.4
Reach 21.4
Overall Length 64
£134.42 ex VAT
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1/4 x 20 TPI UN Internal Aluminium Chamfering Thread Mill – Carmex AMT 08048 C14 20 UN-C K20

1/4 x 20 TPI UN Internal Aluminium Chamfering Thread Mill – Carmex AMT 08048 C14 20 UN-C K20

SKU: AMT08048C1420UN-CK20

Size 1/4
Pitch 20
Flute Length 14.6
Reach 14.6
Overall Length 64
£137.30 ex VAT
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M6 x 1 Metric Internal Aluminium Chamfering Thread Mill – Carmex AMT 08048 C13 1.0 ISO-C K20

M6 x 1 Metric Internal Aluminium Chamfering Thread Mill – Carmex AMT 08048 C13 1.0 ISO-C K20

SKU: AMT08048C131.0ISO-CK20

Size M6
Pitch 1
Flute Length 13.5
Reach 13.5
Overall Length 64
£137.30 ex VAT
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5/16 x 18 TPI UN Internal Aluminium Thread Mill – Carmex AMT 0606 C17 18 UN K20

5/16 x 18 TPI UN Internal Aluminium Thread Mill – Carmex AMT 0606 C17 18 UN K20

SKU: AMT0606C1718UNK20

Size 5/16
Pitch 18
Flute Length 17.6
Reach 17.6
Overall Length 58
£100.90 ex VAT
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M6 x 0.75 Metric Internal Aluminium Thread Mill – Carmex AMT 0605 C13 0.75 ISO K20

M6 x 0.75 Metric Internal Aluminium Thread Mill – Carmex AMT 0605 C13 0.75 ISO K20

SKU: AMT0605C130.75ISOK20

Size M6
Pitch 0.75
Flute Length 13.1
Reach 13.1
Overall Length 58
£100.90 ex VAT
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1/4 x 28 TPI UN Internal Aluminium Thread Mill – Carmex AMT 06052 C14 28 UN K20

1/4 x 28 TPI UN Internal Aluminium Thread Mill – Carmex AMT 06052 C14 28 UN K20

SKU: AMT06052C1428UNK20

Size 1/4
Pitch 28
Flute Length 14
Reach 14
Overall Length 58
£100.90 ex VAT
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M5 x 0.8 Metric Internal Aluminium Thread Mill – Carmex AMT 0604 C10 0.8 ISO K20

M5 x 0.8 Metric Internal Aluminium Thread Mill – Carmex AMT 0604 C10 0.8 ISO K20

SKU: AMT0604C100.8ISOK20

Size M5
Pitch 0.8
Flute Length 10.8
Reach 10.8
Overall Length 58
£100.90 ex VAT
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M5 x 0.8 Metric Internal Aluminium Chamfering Thread Mill – Carmex AMT 0604 C10 0.8 ISO-C K20

M5 x 0.8 Metric Internal Aluminium Chamfering Thread Mill – Carmex AMT 0604 C10 0.8 ISO-C K20

SKU: AMT0604C100.8ISO-CK20

Size M5
Pitch 0.8
Flute Length 10.8
Reach 10.8
Overall Length 58
£103.04 ex VAT
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1/4 x 20 TPI UN Internal Aluminium Thread Mill – Carmex AMT 06048 C14 20 UN K20

1/4 x 20 TPI UN Internal Aluminium Thread Mill – Carmex AMT 06048 C14 20 UN K20

SKU: AMT06048C1420UNK20

Size 1/4
Pitch 20
Flute Length 14.6
Reach 14.6
Overall Length 58
£100.90 ex VAT
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M6 x 1 Metric Internal Aluminium Thread Mill – Carmex AMT 06048 C13 1.0 ISO K20

M6 x 1 Metric Internal Aluminium Thread Mill – Carmex AMT 06048 C13 1.0 ISO K20

SKU: AMT06048C131.0ISOK20

Size M6
Pitch 1
Flute Length 13.5
Reach 13.5
Overall Length 58
£100.90 ex VAT
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M5 x 0.5 Metric Internal Aluminium Thread Mill – Carmex AMT 06043 C10 0.5 ISO K20

M5 x 0.5 Metric Internal Aluminium Thread Mill – Carmex AMT 06043 C10 0.5 ISO K20

SKU: AMT06043C100.5ISOK20

Size M5
Pitch 0.5
Flute Length 10.8
Reach 10.8
Overall Length 58
£100.90 ex VAT
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No. 8, No. 10, No. 12 x 32 TPI UN Internal Aluminium Thread Mill – Carmex AMT 06032 C9 32 UN K20

No. 8, No. 10, No. 12 x 32 TPI UN Internal Aluminium Thread Mill – Carmex AMT 06032 C9 32 UN K20

SKU: AMT06032C932UNK20

Size No. 8 No. 10 No. 12
Pitch 32
Flute Length 9.1
Reach 9.1
Overall Length 58
£100.90 ex VAT
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M4 x 0.7 Metric Internal Aluminium Thread Mill – Carmex AMT 06031 C8 0.7 ISO K20

M4 x 0.7 Metric Internal Aluminium Thread Mill – Carmex AMT 06031 C8 0.7 ISO K20

SKU: AMT06031C80.7ISOK20

Size M4
Pitch 0.7
Flute Length 8.8
Reach 8.8
Overall Length 58
£100.90 ex VAT
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M3, M4 x 0.5 Metric Internal Aluminium Thread Mill – Carmex AMT 03024 C6 0.5 ISO K20

M3, M4 x 0.5 Metric Internal Aluminium Thread Mill – Carmex AMT 03024 C6 0.5 ISO K20

SKU: AMT03024C60.5ISOK20

Size M3 M4
Pitch 0.5
Flute Length 6.8
Reach 6.8
Overall Length 39
£100.90 ex VAT
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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.