Solid Carbide Thread Mills

789 items
M2.5 x 0.45 Metric Internal Mini Thread Mill 3xD – Carmex MTS 0602 C7 0.45 ISO MT7

M2.5 x 0.45 Metric Internal Mini Thread Mill 3xD – Carmex MTS 0602 C7 0.45 ISO MT7

SKU: MTS0602C70.45ISOMT7

Size M2.5
Pitch 0.45
Flute Length 1.35
Reach 7.5
Overall Length 58
£97.61 ex VAT
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55° Partial Profile 28–18 TPI Internal & External Thread Mill – Carmex MTI 06059 C20 A55 MT11

55° Partial Profile 28–18 TPI Internal & External Thread Mill – Carmex MTI 06059 C20 A55 MT11

SKU: MTI06059C20A55MT11

Pitch (28-18)
Reach 20.5
Shank Diameter 6
Overall Length 58
Flute Quantity 3
£95.44 ex VAT
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G1/4–3/8 BSP 19 TPI Internal & External Thread Mill – Carmex MT 0808 C14 19 W MT7

G1/4–3/8 BSP 19 TPI Internal & External Thread Mill – Carmex MT 0808 C14 19 W MT7

SKU: MT0808C1419WMT7

Size G1/4 G3/8
Pitch 19
Flute Length 14
Reach 14
Overall Length 64
£115.62 ex VAT
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3/8 x 16 TPI UN Internal Thread Mill – Carmex MT 08074 C24 16 UN MT7

3/8 x 16 TPI UN Internal Thread Mill – Carmex MT 08074 C24 16 UN MT7

SKU: MT08074C2416UNMT7

Size 3/8
Pitch 16
Flute Length 24.6
Reach 24.6
Overall Length 64
£115.62 ex VAT
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M6, M8 x 1 Metric Internal Mini Hardcut Thread Mill 3xD – Carmex MTSH 06047 C20 1.0 ISO MT9

M6, M8 x 1 Metric Internal Mini Hardcut Thread Mill 3xD – Carmex MTSH 06047 C20 1.0 ISO MT9

SKU: MTSH06047C201.0ISOMT9

Size M6 M8
Pitch 1
Flute Length 3
Reach 20
Overall Length 105
£112.23 ex VAT
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M12 x 1.75 Metric Internal Mini Thread Mill 3xD – Carmex MTS 1009 C37 1.75 ISO MT7

M12 x 1.75 Metric Internal Mini Thread Mill 3xD – Carmex MTS 1009 C37 1.75 ISO MT7

SKU: MTS1009C371.75ISOMT7

Size M12
Pitch 1.75
Flute Length 5.25
Reach 37.8
Overall Length 73
£168.41 ex VAT
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M12 x 1.75 Metric Internal Mini Thread Mill – Carmex MTS 1009 C26 1.75 ISO MT7

M12 x 1.75 Metric Internal Mini Thread Mill – Carmex MTS 1009 C26 1.75 ISO MT7

SKU: MTS1009C261.75ISOMT7

Size M12
Pitch 1.75
Flute Length 5.25
Reach 26
Overall Length 73
£168.41 ex VAT
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M8, M10, M12 x 1.25 Metric Internal Mini Thread Mill 3xD Long 105mm – Carmex MTS 0606 C24 1.25 ISO-L MT7

M8, M10, M12 x 1.25 Metric Internal Mini Thread Mill 3xD Long 105mm – Carmex MTS 0606 C24 1.25 ISO-L MT7

SKU: MTS0606C241.25IS0-LMT7

Size M8 M10 M12
Pitch 1.25
Flute Length 3.75
Reach 24
Overall Length 105
£78.71 ex VAT
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M1.6 x 0.35 Metric Internal Thread Mill 3.5xD – Carmex MTI 03012 C6 0.35 ISO MT11

M1.6 x 0.35 Metric Internal Thread Mill 3.5xD – Carmex MTI 03012 C6 0.35 ISO MT11

SKU: MTI03012C60.35ISOMT11

Size M1.6 M2 M2.2
Pitch 0.35
Flute Length 0.35
Reach 5.7
Overall Length 39
£95.44 ex VAT
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3/4 x 16 TPI UN Internal Coolant Bore Thread Mill – Carmex MTB 1212 D31 16 UN MT7

3/4 x 16 TPI UN Internal Coolant Bore Thread Mill – Carmex MTB 1212 D31 16 UN MT7

SKU: MTB1212D3116UNMT7

Size 3/4
Pitch 16
Flute Length 31
Reach 31
Overall Length 84
£183.59 ex VAT
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M16, M18, M20 x 2 Metric Internal Thread Mill – Carmex MT 1212 D27 2.0 ISO MT7

M16, M18, M20 x 2 Metric Internal Thread Mill – Carmex MT 1212 D27 2.0 ISO MT7

SKU: MT1212D272.0ISOMT7

Size M16 M18 M20
Pitch 2
Flute Length 27
Reach 27
Shank Diameter 12
Overall Length 84
£166.90 ex VAT
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9/16–5/8, No. 1, 1/8–1, 5/8 x 18 TPI UN Internal Thread Mill – Carmex MT 1010 D26 18 UN MT7

9/16–5/8, No. 1, 1/8–1, 5/8 x 18 TPI UN Internal Thread Mill – Carmex MT 1010 D26 18 UN MT7

SKU: MT1010D2618UNMT7

Size 9/16 5/8 - 1 1/8 1 5/8
Pitch 18
Flute Length 26.1
Reach 26.1
Overall Length 73
£133.36 ex VAT
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5/16 x 24 TPI UN Internal Thread Mill – Carmex MT 0605 C14 24 UN MT7

5/16 x 24 TPI UN Internal Thread Mill – Carmex MT 0605 C14 24 UN MT7

SKU: MT0605C1424UNMT7

Size 5/16
Pitch 24
Flute Length 14.3
Reach 14.3
Overall Length 58
£86.80 ex VAT
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M4 x 0.7 Metric Internal Mini Hardcut Thread Mill 3xD – Carmex MTSH 06031 C12 0.7 ISO MT9

M4 x 0.7 Metric Internal Mini Hardcut Thread Mill 3xD – Carmex MTSH 06031 C12 0.7 ISO MT9

SKU: MTSH06031C120.7ISOMT9

Size M4
Pitch 0.7
Flute Length 2.1
Reach 12.5
Overall Length 58
£112.23 ex VAT
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G1/2–7/8 BSP 14 TPI Internal & External Mini Thread Mill 2xD – Carmex MTS 1212 D37 14 W MT7

G1/2–7/8 BSP 14 TPI Internal & External Mini Thread Mill 2xD – Carmex MTS 1212 D37 14 W MT7

SKU: MTS1212D3714WMT7

Size G1/2 G7/8
Pitch 14
Flute Length 5.44
Reach 37
Shank Diameter 12
Overall Length 84
£208.58 ex VAT
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5/16, 3/8 x 24 TPI UNJ Internal Mini Thread Mill 2.5xD – Carmex MTS 08067 C20 24 UNJ MT8

5/16, 3/8 x 24 TPI UNJ Internal Mini Thread Mill 2.5xD – Carmex MTS 08067 C20 24 UNJ MT8

SKU: MTS08067C2024UNJMT8

Size 5/16 3/8
Pitch 24
Flute Length 3.18
Reach 20
Overall Length 64
£143.12 ex VAT
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M5 x 0.8 Metric Internal Mini Thread Mill 3xD Long 105mm – Carmex MTS 06038 C16 0.8 ISO-L MT7

M5 x 0.8 Metric Internal Mini Thread Mill 3xD Long 105mm – Carmex MTS 06038 C16 0.8 ISO-L MT7

SKU: MTS06038C160.8ISO-LMT7

Size M5
Pitch 0.8
Flute Length 2.4
Reach 16
Overall Length 105
£102.44 ex VAT
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No. 10, No. 12 x 24 TPI UN Internal Mini Thread Mill 3xD – Carmex MTS 06035 C15 24 UN MT7

No. 10, No. 12 x 24 TPI UN Internal Mini Thread Mill 3xD – Carmex MTS 06035 C15 24 UN MT7

SKU: MTS06035C1524UNMT7

Size No. 10 No. 12
Pitch 24
Flute Length 3.18
Reach 15.5
Shank Diameter 6
Overall Length 58
£97.61 ex VAT
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M3 x 0.5 Metric Internal Mini Thread Mill 3xD Long 105mm – Carmex MTS 06024 C9 0.5 ISO-L MT7

M3 x 0.5 Metric Internal Mini Thread Mill 3xD Long 105mm – Carmex MTS 06024 C9 0.5 ISO-L MT7

SKU: MTS06024C90.5ISO-LMT7

Size M3
Pitch 0.5
Flute Length 1.5
Reach 9.5
Overall Length 105
£102.44 ex VAT
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M3 x 0.5 Metric Internal Mini Thread Mill 2xD – Carmex MTS 06024 C6 0.5 ISO MT7

M3 x 0.5 Metric Internal Mini Thread Mill 2xD – Carmex MTS 06024 C6 0.5 ISO MT7

SKU: MTS06024C60.5ISOMT7

Size M3
Pitch 0.5
Flute Length 1.5
Reach 6.5
Overall Length 58
£97.61 ex VAT
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M1.6, M1.8, M2, M2.5 x 0.35 Metric Internal Mini Thread Mill 3xD Long 105mm – Carmex MTS 06012 C5 0.35 ISO-L MT7

M1.6, M1.8, M2, M2.5 x 0.35 Metric Internal Mini Thread Mill 3xD Long 105mm – Carmex MTS 06012 C5 0.35 ISO-L MT7

SKU: MTS06012C50.35ISO-LMT7

Size M1.6 M2 M2.5
Pitch 0.35
Flute Length 1.05
Reach 4.8
Overall Length 105
£74.97 ex VAT
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M1.4 x 0.3 Metric Internal Mini Thread Mill 3xD – Carmex MTS 03011 C4 0.3 ISO MT7

M1.4 x 0.3 Metric Internal Mini Thread Mill 3xD – Carmex MTS 03011 C4 0.3 ISO MT7

SKU: MTS03011C40.3ISOMT7

Size M1.4
Pitch 0.3
Flute Length 0.9
Reach 4
Overall Length 39
£97.61 ex VAT
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M24, M28 x 3 Metric Internal Thread Mill – Carmex MT 1616 C40 3.0 ISO MT7

M24, M28 x 3 Metric Internal Thread Mill – Carmex MT 1616 C40 3.0 ISO MT7

SKU: MT1616C403.0ISOMT7

Size M24 M28
Pitch 3
Flute Length 40.5
Reach 40.5
Shank Diameter 16
Overall Length 105
£196.90 ex VAT
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M12 x 1.75 Metric Internal Thread Mill – Carmex MT 0808 C20 1.75 ISO MT7

M12 x 1.75 Metric Internal Thread Mill – Carmex MT 0808 C20 1.75 ISO MT7

SKU: MT0808C201.75ISOMT7

Size M12
Pitch 1.75
Flute Length 20.1
Reach 20.1
Shank Diameter 8
Overall Length 64
£115.62 ex VAT
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7/16–1/2 x 20 TPI UN Internal Thread Mill – Carmex MT 0807 C21 20 UN MT7

7/16–1/2 x 20 TPI UN Internal Thread Mill – Carmex MT 0807 C21 20 UN MT7

SKU: MT0807C2120UNMT7

Size 7/16 1/2
Pitch 20
Flute Length 21
Reach 21
Overall Length 64
£115.62 ex VAT
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1/16–1/8 NPT 27 TPI Internal & External Thread Mill – Carmex MT 0606 C9 27 NPT MT7

1/16–1/8 NPT 27 TPI Internal & External Thread Mill – Carmex MT 0606 C9 27 NPT MT7

SKU: MT0606C927NPTMT7

Size 1/16 1/8
Pitch 27
Flute Length 9.9
Reach 9.9
Overall Length 58
£86.80 ex VAT
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1/16–1/8 NPTF 27 TPI Internal & External Thread Mill – Carmex MT 0606 C9 27 NPTF MT7

1/16–1/8 NPTF 27 TPI Internal & External Thread Mill – Carmex MT 0606 C9 27 NPTF MT7

SKU: MT0606C927NPTFMT7

Size 1/16 1/8
Pitch 27
Flute Length 9.9
Reach 9.9
Overall Length 58
£86.80 ex VAT
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M8, M10 x 1.25 Metric Internal Thread Mill – Carmex MT 0605 C19 1.25 ISO MT7

M8, M10 x 1.25 Metric Internal Thread Mill – Carmex MT 0605 C19 1.25 ISO MT7

SKU: MT0605C191.25ISOMT7

Size M8 M10
Pitch 1.25
Flute Length 19.4
Reach 19.4
Shank Diameter 6
Overall Length 58
£104.16 ex VAT
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M8, M10 x 1.25 Metric Internal Thread Mill – Carmex MT 0605 C14 1.25 ISO MT7

M8, M10 x 1.25 Metric Internal Thread Mill – Carmex MT 0605 C14 1.25 ISO MT7

SKU: MT0605C141.25ISOMT7

Size M8 M10
Pitch 1.25
Flute Length 14.4
Reach 14.4
Shank Diameter 6
Overall Length 58
£86.80 ex VAT
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M6, M8 x 0.75 Metric Internal Thread Mill – Carmex MT 0605 C13 0.75 ISO MT7

M6, M8 x 0.75 Metric Internal Thread Mill – Carmex MT 0605 C13 0.75 ISO MT7

SKU: MT0605C130.75ISOMT7

Size M6 M8
Pitch 0.75
Flute Length 13.1
Reach 13.1
Shank Diameter 6
Overall Length 58
£104.16 ex VAT
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M6, M8 x 1 Metric Internal Thread Mill – Carmex MT 0604 C10 1.0 ISO MT7

M6, M8 x 1 Metric Internal Thread Mill – Carmex MT 0604 C10 1.0 ISO MT7

SKU: MT0604C101.0ISOMT7

Size M6 M8
Pitch 1
Flute Length 10.5
Reach 10.5
Shank Diameter 6
Overall Length 58
£86.80 ex VAT
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M5 x 0.5 Metric Internal Thread Mill – Carmex MT 06038 C10 0.5 ISO MT7

M5 x 0.5 Metric Internal Thread Mill – Carmex MT 06038 C10 0.5 ISO MT7

SKU: MT06038C100.5ISOMT7

Size M5
Pitch 0.5
Flute Length 10.3
Reach 10.3
Shank Diameter 6
Overall Length 58
£86.80 ex VAT
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M8, M10, M12 x 1.25 Metric Internal Mini Hardcut Thread Mill 2xD – Carmex MTSH 0606 C18 1.25 ISO MT9

M8, M10, M12 x 1.25 Metric Internal Mini Hardcut Thread Mill 2xD – Carmex MTSH 0606 C18 1.25 ISO MT9

SKU: MTSH0606C181.25ISOMT9

Size M8-M12
Pitch 1.25
Flute Length 3.75
Reach 18
Overall Length 58
£112.23 ex VAT
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1/4 x 28 TPI UN Internal Mini Hardcut Thread Mill 3xD – Carmex MTSH 0605 C19 28 UN MT9

1/4 x 28 TPI UN Internal Mini Hardcut Thread Mill 3xD – Carmex MTSH 0605 C19 28 UN MT9

SKU: MTSH0605C1928UNMT9

Size 1/4
Pitch 28
Flute Length 2.72
Reach 19
Overall Length 58
£112.23 ex VAT
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M6, M8 x 1 Metric Internal Mini Hardcut Thread Mill 2xD – Carmex MTSH 06047 C14 1.0 ISO MT9

M6, M8 x 1 Metric Internal Mini Hardcut Thread Mill 2xD – Carmex MTSH 06047 C14 1.0 ISO MT9

SKU: MTSH06047C141.0ISOMT9

Size M6 M8
Pitch 1
Flute Length 3
Reach 14
Overall Length 58
£112.23 ex VAT
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No. 2, No. 3 x 56 TPI UN Internal Mini Hardcut Thread Mill 3xD – Carmex MTSH 06016 C6 56 UN MT9

No. 2, No. 3 x 56 TPI UN Internal Mini Hardcut Thread Mill 3xD – Carmex MTSH 06016 C6 56 UN MT9

SKU: MTSH06016C656UNMT9

Size No. 2 No. 3
Pitch 56
Flute Length 1.36
Reach 6.6
Overall Length 58
£112.23 ex VAT
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G≥1 BSP 11 TPI Internal & External Mini Thread Mill 2xD – Carmex MTS 1616 D44 11 W MT7

G≥1 BSP 11 TPI Internal & External Mini Thread Mill 2xD – Carmex MTS 1616 D44 11 W MT7

SKU: MTS1616D4411WMT7

Size N/A
Pitch 11
Flute Length 6.93
Reach 44
Shank Diameter 16
Overall Length 105
£260.62 ex VAT
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5/8 x 18 TPI UN Internal Mini Thread Mill 3xD – Carmex MTS 1212 D49 18 UN MT7

5/8 x 18 TPI UN Internal Mini Thread Mill 3xD – Carmex MTS 1212 D49 18 UN MT7

SKU: MTS1212D4918UNMT7

Size 5/8
Pitch 18
Flute Length 4.23
Reach 49
Shank Diameter 12
Overall Length 84
£208.58 ex VAT
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M10, M14, M16 x 1.5 Metric Internal Mini Thread Mill 3xD Long 105mm – Carmex MTS 08078 C31 1.5 ISO-L MT7

M10, M14, M16 x 1.5 Metric Internal Mini Thread Mill 3xD Long 105mm – Carmex MTS 08078 C31 1.5 ISO-L MT7

SKU: MTS08078C311.5IS0-LMT7

Size M10 M14 M16
Pitch 1.5
Flute Length 4.5
Reach 31.5
Overall Length 105
£110.00 ex VAT
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M10, M14, M16 x 1.5 Metric Internal Mini Thread Mill 2xD – Carmex MTS 08078 C23 1.5 ISO MT7

M10, M14, M16 x 1.5 Metric Internal Mini Thread Mill 2xD – Carmex MTS 08078 C23 1.5 ISO MT7

SKU: MTS08078C231.5ISOMT7

Size M10 M14 M16
Pitch 1.5
Flute Length 4.5
Reach 23
Overall Length 64
£130.12 ex VAT
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G1/8 BSP 28 TPI Internal & External Mini Thread Mill 2xD – Carmex MTS 08078 C19 28 W MT7

G1/8 BSP 28 TPI Internal & External Mini Thread Mill 2xD – Carmex MTS 08078 C19 28 W MT7

SKU: MTS08078C1928WMT7

Size G1/8
Pitch 28
Flute Length 2.72
Reach 19.5
Shank Diameter 8
Overall Length 64
£130.12 ex VAT
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5/16, 3/8 x 24 TPI UN Internal Mini Thread Mill 2xD – Carmex MTS 08066 C17 24 UN MT7

5/16, 3/8 x 24 TPI UN Internal Mini Thread Mill 2xD – Carmex MTS 08066 C17 24 UN MT7

SKU: MTS08066C1724UNMT7

Size 5/16 3/8
Pitch 24
Flute Length 3.18
Reach 17
Shank Diameter 8
Overall Length 64
£130.12 ex VAT
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1/4 x 28 TPI UN Internal Mini Thread Mill 3xD Long 105mm – Carmex MTS 0605 C19 28 UN-L MT7

1/4 x 28 TPI UN Internal Mini Thread Mill 3xD Long 105mm – Carmex MTS 0605 C19 28 UN-L MT7

SKU: MTS0605C1928UN-LMT7

Size 1/4
Pitch 28
Flute Length 2.72
Reach 19
Shank Diameter 6
Overall Length 105
£102.44 ex VAT
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M6, M8 x 1 Metric Internal Mini Thread Mill 3xD Long 105mm – Carmex MTS 06047 C20 1.0 ISO-L MT7

M6, M8 x 1 Metric Internal Mini Thread Mill 3xD Long 105mm – Carmex MTS 06047 C20 1.0 ISO-L MT7

SKU: MTS06047C201.0ISO-LMT7

Size M6 M8
Pitch 1
Flute Length 3
Reach 20
Overall Length 105
£102.44 ex VAT
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No. 10 x 32 TPI UN Internal Mini Thread Mill 2xD – Carmex MTS 06037 C10 32 UN MT7

No. 10 x 32 TPI UN Internal Mini Thread Mill 2xD – Carmex MTS 06037 C10 32 UN MT7

SKU: MTS06037C1032UNMT7

Size No. 10
Pitch 32
Flute Length 2.38
Reach 10.5
Shank Diameter 6
Overall Length 58
£97.61 ex VAT
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MJ4 x 0.7 Internal Mini Thread Mill 2.5xD – Carmex MTS 06032 C10 0.7 MJ MT8

MJ4 x 0.7 Internal Mini Thread Mill 2.5xD – Carmex MTS 06032 C10 0.7 MJ MT8

SKU: MTS06032C100.7MJMT8

Size MJ 4
Pitch 0.7
Flute Length 2.1
Reach 10
Shank Diameter 6
Overall Length 58
£107.37 ex VAT
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M2.5 x 0.45 Metric Internal Mini Thread Mill 2xD Long 105mm – Carmex MTS 0602 C5 0.45 ISO-L MT7

M2.5 x 0.45 Metric Internal Mini Thread Mill 2xD Long 105mm – Carmex MTS 0602 C5 0.45 ISO-L MT7

SKU: MTS0602C50.45ISO-LMT7

Size M2.5
Pitch 0.45
Flute Length 1.35
Reach 5.5
Overall Length 105
£102.44 ex VAT
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No. 4 x 40 TPI UN Internal Mini Thread Mill 3xD – Carmex MTS 06021 C8 40 UN MT7

No. 4 x 40 TPI UN Internal Mini Thread Mill 3xD – Carmex MTS 06021 C8 40 UN MT7

SKU: MTS06021C840UNMT7

Size No. 4
Pitch 40
Flute Length 1.91
Reach 8
Shank Diameter 6
Overall Length 58
£97.61 ex VAT
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No. 6 x 32 TPI UN Internal Mini Thread Mill 3xD – Carmex MTS 03025 C10 32 UN MT7

No. 6 x 32 TPI UN Internal Mini Thread Mill 3xD – Carmex MTS 03025 C10 32 UN MT7

SKU: MTS03025C1032UNMT7

Size No. 6
Pitch 32
Flute Length 2.38
Reach 10.5
Shank Diameter 3
Overall Length 39
£97.61 ex VAT
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55° Partial Profile 20–14 TPI Internal & External Thread Mill – Carmex MTI 0807 C23 A55 MT11

55° Partial Profile 20–14 TPI Internal & External Thread Mill – Carmex MTI 0807 C23 A55 MT11

SKU: MTI0807C23A55MT11

Pitch (20-14)
Reach 23
Shank Diameter 8
Overall Length 64
Flute Quantity 3
£127.22 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.