Solid Carbide Thread Mills

789 items
M4 x 0.7 Metric Internal Mini Thread Mill 3xD – Carmex MTS 06031 C12 0.7 ISO MT7

M4 x 0.7 Metric Internal Mini Thread Mill 3xD – Carmex MTS 06031 C12 0.7 ISO MT7

SKU: MTS06031C120.7ISOMT7

Size M4
Pitch 0.7
Flute Length 3.1
Reach 12.5
Overall Length 58
£97.61 ex VAT
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M6, M8 x 1 Metric Internal Mini Thread Mill 3xD – Carmex MTS 06047 C20 1.0 ISO MT7

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

SKU: MTS06047C201.0ISOMT7

Size M6 M8
Pitch 1
Flute Length 3
Reach 20
Overall Length 58
£97.61 ex VAT
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M3 x 0.5 Metric Internal Mini Thread Mill 4xD – Carmex MTS 03024 C12 0.5 ISO MT7

M3 x 0.5 Metric Internal Mini Thread Mill 4xD – Carmex MTS 03024 C12 0.5 ISO MT7

SKU: MTS03024C120.5ISOMT7

Size M3
Pitch 0.5
Flute Length 1.5
Reach 12.5
Overall Length 39
£97.61 ex VAT
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5/16 x 18 TPI UN Internal Mini Thread Mill 3xD – Carmex MTS 0606 C23 18 UN MT7

5/16 x 18 TPI UN Internal Mini Thread Mill 3xD – Carmex MTS 0606 C23 18 UN MT7

SKU: MTS0606C2318UNMT7

Size 5/16
Pitch 18
Flute Length 4.23
Reach 23
Shank Diameter 6
Overall Length 58
£97.61 ex VAT
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M3 x 0.5 Metric Internal Mini Thread Mill 3xD – Carmex MTS 06024 C9 0.5 ISO MT7

M3 x 0.5 Metric Internal Mini Thread Mill 3xD – Carmex MTS 06024 C9 0.5 ISO MT7

SKU: MTS06024C90.5ISOMT7

Size M3
Pitch 0.5
Flute Length 1.5
Reach 9.5
Overall Length 58
£97.61 ex VAT
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M5 x 0.8 Metric Internal Mini Thread Mill 3xD – Carmex MTS 06038 C16 0.8 ISO MT7

M5 x 0.8 Metric Internal Mini Thread Mill 3xD – Carmex MTS 06038 C16 0.8 ISO MT7

SKU: MTS06038C160.8ISOMT7

Size M5
Pitch 0.8
Flute Length 2.4
Reach 16
Overall Length 58
£97.61 ex VAT
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M8, M10, M12 x 1.25 Metric Internal Mini Thread Mill 3xD – Carmex MTS 0606 C24 1.25 ISO MT7

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

SKU: MTS0606C241.25ISOMT7

Size M8 M10 M12
Pitch 1.25
Flute Length 3.75
Reach 24
Overall Length 58
£97.61 ex VAT
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5/16 x 18 TPI UN Internal Mini Thread Mill 2xD – Carmex MTS 0606 C17 18 UN MT7

5/16 x 18 TPI UN Internal Mini Thread Mill 2xD – Carmex MTS 0606 C17 18 UN MT7

SKU: MTS0606C1718UNMT7

Size 5/16
Pitch 18
Flute Length 4.23
Reach 17
Shank Diameter 6
Overall Length 58
£97.61 ex VAT
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M3 x 0.5 Metric Internal Mini Thread Mill 2xD Long 105mm – Carmex MTS 06024 C6 0.5 ISO-L MT7

M3 x 0.5 Metric Internal Mini Thread Mill 2xD Long 105mm – Carmex MTS 06024 C6 0.5 ISO-L MT7

SKU: MTS06024C60.5ISO-LMT7

Size M3
Pitch 0.5
Flute Length 1.5
Reach 6.5
Overall Length 105
£102.44 ex VAT
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M2.5 x 0.45 Metric Internal Mini Thread Mill 4xD – Carmex MTS 0302 C10 0.45 ISO MT7

M2.5 x 0.45 Metric Internal Mini Thread Mill 4xD – Carmex MTS 0302 C10 0.45 ISO MT7

SKU: MTS0302C100.45ISOMT7

Size M2.5
Pitch 0.45
Flute Length 1.35
Reach 10.5
Overall Length 39
£97.61 ex VAT
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No. 8 x 32 TPI UN Internal Mini Thread Mill 2xD – Carmex MTS 06032 C9 32 UN MT7

No. 8 x 32 TPI UN Internal Mini Thread Mill 2xD – Carmex MTS 06032 C9 32 UN MT7

SKU: MTS06032C932UNMT7

Size No. 8
Pitch 32
Flute Length 2.38
Reach 9.5
Shank Diameter 6
Overall Length 58
£97.61 ex VAT
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M10, M14, M16 x 1.5 Metric Internal Mini Thread Mill 3xD – Carmex MTS 08078 C31 1.5 ISO MT7

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

SKU: MTS08078C311.5ISOMT7

Size M10 M14 M16
Pitch 1.5
Flute Length 4.5
Reach 31.5
Overall Length 64
£130.12 ex VAT
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MJ5 x 0.8 Internal Mini Thread Mill 2.5xD – Carmex MTS 06039 C12 0.8 MJ MT8

MJ5 x 0.8 Internal Mini Thread Mill 2.5xD – Carmex MTS 06039 C12 0.8 MJ MT8

SKU: MTS06039C120.8MJMT8

Size MJ 5
Pitch 0.8
Flute Length 2.4
Reach 12.5
Shank Diameter 6
Overall Length 58
£107.37 ex VAT
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M2 x 0.4 Metric Internal Mini Thread Mill 3xD – Carmex MTS 03016 C6 0.4 ISO MT7

M2 x 0.4 Metric Internal Mini Thread Mill 3xD – Carmex MTS 03016 C6 0.4 ISO MT7

SKU: MTS03016C60.4ISOMT7

Size M2
Pitch 0.4
Flute Length 1.2
Reach 6
Overall Length 39
£97.61 ex VAT
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M6, M8 x 1 Metric Internal Thread Mill – Carmex MT 0604 C14 1.0 ISO MT7

M6, M8 x 1 Metric Internal Thread Mill – Carmex MT 0604 C14 1.0 ISO MT7

SKU: MT0604C141.0ISOMT7

Size M6 M8
Pitch 1
Flute Length 14.5
Reach 14.5
Shank Diameter 6
Overall Length 58
£104.16 ex VAT
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1/4 x 28 TPI UN Internal Mini Thread Mill 2xD – Carmex MTS 0605 C14 28 UN MT7

1/4 x 28 TPI UN Internal Mini Thread Mill 2xD – Carmex MTS 0605 C14 28 UN MT7

SKU: MTS0605C1428UNMT7

Size 1/4
Pitch 28
Flute Length 2.72
Reach 14.5
Shank Diameter 6
Overall Length 58
£97.61 ex VAT
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M18, M20 x 2.5 Metric Internal Thread Mill – Carmex MT 1414 D33 2.5 ISO MT7

M18, M20 x 2.5 Metric Internal Thread Mill – Carmex MT 1414 D33 2.5 ISO MT7

SKU: MT1414D332.5ISOMT7

Size M18 M20
Pitch 2.5
Flute Length 33.8
Reach 33.8
Shank Diameter 14
Overall Length 84
£185.63 ex VAT
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M5 x 0.8 Metric Internal Mini Thread Mill 4xD – Carmex MTS 0604 C20 0.8 ISO MT7

M5 x 0.8 Metric Internal Mini Thread Mill 4xD – Carmex MTS 0604 C20 0.8 ISO MT7

SKU: MTS0604C200.8ISOMT7

Size M5
Pitch 0.8
Flute Length 2.4
Reach 20.8
Overall Length 58
£97.61 ex VAT
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M4 x 0.7 Metric Internal Mini Thread Mill 4xD – Carmex MTS 06031 C16 0.7 ISO MT7

M4 x 0.7 Metric Internal Mini Thread Mill 4xD – Carmex MTS 06031 C16 0.7 ISO MT7

SKU: MTS06031C160.7ISOMT7

Size M4
Pitch 0.7
Flute Length 2.1
Reach 16.7
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 – Carmex MTS 03012 C5 0.35 ISO MT7

M1.6, M1.8, M2, M2.5 x 0.35 Metric Internal Mini Thread Mill 3xD – Carmex MTS 03012 C5 0.35 ISO MT7

SKU: MTS03012C50.35ISOMT7

Size M1.6 M2 M2.5
Pitch 0.35
Flute Length 1.05
Reach 4.8
Overall Length 39
£97.61 ex VAT
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1/4–3/8 NPT 18 TPI Internal & External Thread Mill – Carmex MT 0808 C14 18 NPT MT7

1/4–3/8 NPT 18 TPI Internal & External Thread Mill – Carmex MT 0808 C14 18 NPT MT7

SKU: MT0808C1418NPTMT7

Size 1/4 3/8
Pitch 18
Flute Length 14.8
Reach 14.8
Overall Length 64
£115.62 ex VAT
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M2 x 0.4 Metric Internal Mini Thread Mill 5xD – Carmex MTS 03016 C10 0.4 ISO MT7

M2 x 0.4 Metric Internal Mini Thread Mill 5xD – Carmex MTS 03016 C10 0.4 ISO MT7

SKU: MTS03016C100.4ISOMT7

Size M2
Pitch 0.4
Flute Length 1.2
Reach 10.4
Overall Length 39
£97.61 ex VAT
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M6, M8 x 1 Metric Internal Mini Thread Mill 2xD – Carmex MTS 06047 C14 1.0 ISO MT7

M6, M8 x 1 Metric Internal Mini Thread Mill 2xD – Carmex MTS 06047 C14 1.0 ISO MT7

SKU: MTS06047C141.0ISOMT7

Size M6 M8
Pitch 1
Flute Length 3
Reach 14
Overall Length 58
£97.61 ex VAT
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1/2 x 13 TPI UN Internal Mini Thread Mill 3xD – Carmex MTS 10092 C40 13 UN MT7

1/2 x 13 TPI UN Internal Mini Thread Mill 3xD – Carmex MTS 10092 C40 13 UN MT7

SKU: MTS10092C4013UNMT7

Size 1/2
Pitch 13
Flute Length 5.86
Reach 40.1
Shank Diameter 10
Overall Length 73
£168.41 ex VAT
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M5 x 0.8 Metric Internal Mini Thread Mill 2xD – Carmex MTS 06038 C12 0.8 ISO MT7

M5 x 0.8 Metric Internal Mini Thread Mill 2xD – Carmex MTS 06038 C12 0.8 ISO MT7

SKU: MTS06038C120.8ISOMT7

Size M5
Pitch 0.8
Flute Length 2.4
Reach 12.5
Overall Length 58
£97.61 ex VAT
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No. 4 x 40 TPI UN Internal Mini Hardcut Thread Mill 2xD – Carmex MTSH 06021 C6 40 UN MT9

No. 4 x 40 TPI UN Internal Mini Hardcut Thread Mill 2xD – Carmex MTSH 06021 C6 40 UN MT9

SKU: MTSH06021C640UNMT9

Size No. 4
Pitch 40
Flute Length 1.91
Reach 6.3
Overall Length 58
£112.23 ex VAT
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M16, M18, M20 x 2 Metric Internal Mini Thread Mill 2xD – Carmex MTS 12118 D35 2.0 ISO MT7

M16, M18, M20 x 2 Metric Internal Mini Thread Mill 2xD – Carmex MTS 12118 D35 2.0 ISO MT7

SKU: MTS12118D352.0ISOMT7

Size M16 M18 M20
Pitch 2
Flute Length 6
Reach 35
Overall Length 84
£208.58 ex VAT
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M6, M8 x 1 Metric Internal Mini Thread Mill 4xD – Carmex MTS 06048 C25 1.0 ISO MT7

M6, M8 x 1 Metric Internal Mini Thread Mill 4xD – Carmex MTS 06048 C25 1.0 ISO MT7

SKU: MTS06048C251.0ISOMT7

Size M6 M8
Pitch 1
Flute Length 3
Reach 25
Overall Length 58
£97.61 ex VAT
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M24, M28 x 3 Metric Internal Coolant Bore Thread Mill – Carmex MTB 2018 D58 3.0 ISO MT7

M24, M28 x 3 Metric Internal Coolant Bore Thread Mill – Carmex MTB 2018 D58 3.0 ISO MT7

SKU: MTB2018D583.0ISOMT7

Size M24 M28
Pitch 3
Flute Length 58.5
Reach 58.5
Overall Length 120
£313.91 ex VAT
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M4 x 0.7 Metric Internal Mini Thread Mill 3xD Long 105mm – Carmex MTS 06031 C12 0.7 ISO-L MT7

M4 x 0.7 Metric Internal Mini Thread Mill 3xD Long 105mm – Carmex MTS 06031 C12 0.7 ISO-L MT7

SKU: MTS06031C120.7ISO-LMT7

Size M4
Pitch 0.7
Flute Length 3.1
Reach 12.5
Overall Length 105
£102.44 ex VAT
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G1/4–3/8 BSP 19 TPI Internal & External Mini Thread Mill 2xD – Carmex MTS 1010 D30 19 W MT7

G1/4–3/8 BSP 19 TPI Internal & External Mini Thread Mill 2xD – Carmex MTS 1010 D30 19 W MT7

SKU: MTS1010D3019WMT7

Size G1/4 G3/8
Pitch 19
Flute Length 4.01
Reach 30
Shank Diameter 10
Overall Length 73
£168.41 ex VAT
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3/8 x 16 TPI UN Internal Mini Thread Mill 3xD – Carmex MTS 08067 C30 16 UN MT7

3/8 x 16 TPI UN Internal Mini Thread Mill 3xD – Carmex MTS 08067 C30 16 UN MT7

SKU: MTS08067C3016UNMT7

Size 3/8
Pitch 16
Flute Length 4.76
Reach 30.2
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 – Carmex MTS 0605 C19 28 UN MT7

1/4 x 28 TPI UN Internal Mini Thread Mill 3xD – Carmex MTS 0605 C19 28 UN MT7

SKU: MTS0605C1928UNMT7

Size 1/4
Pitch 28
Flute Length 2.72
Reach 19
Shank Diameter 6
Overall Length 58
£97.61 ex VAT
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M3 x 0.5 Metric Internal Mini Thread Mill 5xD – Carmex MTS 03024 C15 0.5 ISO MT7

M3 x 0.5 Metric Internal Mini Thread Mill 5xD – Carmex MTS 03024 C15 0.5 ISO MT7

SKU: MTS03024C150.5ISOMT7

Size M3
Pitch 0.5
Flute Length 1.5
Reach 15.5
Overall Length 39
£97.61 ex VAT
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No. 4 x 40 TPI UN Internal Mini Thread Mill 4xD – Carmex MTS 03021 C12 40 UN MT7

No. 4 x 40 TPI UN Internal Mini Thread Mill 4xD – Carmex MTS 03021 C12 40 UN MT7

SKU: MTS03021C1240UNMT7

Size No. 4
Pitch 40
Flute Length 1.91
Reach 12
Shank Diameter 3
Overall Length 39
£97.61 ex VAT
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M24, M28 x 3 Metric Internal Coolant Bore Thread Mill – Carmex MTB 2018 D40 3.0 ISO MT7

M24, M28 x 3 Metric Internal Coolant Bore Thread Mill – Carmex MTB 2018 D40 3.0 ISO MT7

SKU: MTB2018D403.0ISOMT7

Size M24 M28
Pitch 3
Flute Length 40.5
Reach 40.5
Overall Length 105
£261.57 ex VAT
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M10, M14, M16 x 1.5 Metric Internal Mini Hardcut Thread Mill 2xD – Carmex MTSH 08078 C23 1.5 ISO MT9

M10, M14, M16 x 1.5 Metric Internal Mini Hardcut Thread Mill 2xD – Carmex MTSH 08078 C23 1.5 ISO MT9

SKU: MTSH08078C231.5ISOMT9

Size M10-M16
Pitch 1.5
Flute Length 4.5
Reach 23
Overall Length 64
£149.63 ex VAT
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No. 10 x 32 TPI UN Internal Mini Thread Mill 3xD – Carmex MTS 06037 C15 32 UN MT7

No. 10 x 32 TPI UN Internal Mini Thread Mill 3xD – Carmex MTS 06037 C15 32 UN MT7

SKU: MTS06037C1532UNMT7

Size No. 10
Pitch 32
Flute Length 2.38
Reach 15
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 06025 C10 32 UN MT7

No. 6 x 32 TPI UN Internal Mini Thread Mill 3xD – Carmex MTS 06025 C10 32 UN MT7

SKU: MTS06025C1032UNMT7

Size No. 6
Pitch 32
Flute Length 2.38
Reach 10.5
Shank Diameter 6
Overall Length 58
£97.61 ex VAT
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1/4–3/8 NPT 18 TPI Internal & External Coolant Bore Thread Mill – Carmex MTB 1010 D16 18 NPT MT7

1/4–3/8 NPT 18 TPI Internal & External Coolant Bore Thread Mill – Carmex MTB 1010 D16 18 NPT MT7

SKU: MTB1010D1618NPTMT7

Size 1/4 - 3/8
Pitch 18
Flute Length 16.2
Reach 16.2
Shank Diameter 10
Overall Length 73
£146.70 ex VAT
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1/4 x 20 TPI UN Internal Coolant Bore Thread Mill – Carmex MTB 06047 C12 20 UN MT7

1/4 x 20 TPI UN Internal Coolant Bore Thread Mill – Carmex MTB 06047 C12 20 UN MT7

SKU: MTB06047C1220UNMT7

Size 1/4
Pitch 20
Flute Length 12.1
Reach 12.1
Overall Length 58
£95.48 ex VAT
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M6 x 1 Metric Internal Coolant Bore Thread Mill – Carmex MTB 06046 C10 1.0 ISO MT7

M6 x 1 Metric Internal Coolant Bore Thread Mill – Carmex MTB 06046 C10 1.0 ISO MT7

SKU: MTB06046C101.0ISOMT7

Size M6
Pitch 1
Flute Length 10.5
Reach 10.5
Overall Length 58
£95.48 ex VAT
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1/8 NPSF 27 TPI Internal & External Coolant Bore Thread Mill – Carmex MTB 0312 C04 27 NPSF MT7

1/8 NPSF 27 TPI Internal & External Coolant Bore Thread Mill – Carmex MTB 0312 C04 27 NPSF MT7

SKU: MTB0312C0427NPSFMT7

Size 1/8
Pitch 27
Flute Length 10.8
Reach 10.8
Overall Length 63
£127.18 ex VAT
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No. 8, No. 10, No. 12 x 32 TPI UN Internal Thread Mill – Carmex MT 06032 C6 32 UN MT7

No. 8, No. 10, No. 12 x 32 TPI UN Internal Thread Mill – Carmex MT 06032 C6 32 UN MT7

SKU: MT06032C632UNMT7

Size No. 8 No. 10 No. 12
Pitch 32
Flute Length 6.8
Reach 6.8
Overall Length 58
£86.80 ex VAT
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No. 4 x 40 TPI UN Internal Mini Coolant Thread Mill 3xD – Carmex MTSB 06021 D9 40 UN MT7

No. 4 x 40 TPI UN Internal Mini Coolant Thread Mill 3xD – Carmex MTSB 06021 D9 40 UN MT7

SKU: MTSB06021D940UNMT7

Size No. 4
Pitch 40
Flute Length 1.91
Reach 9.2
Overall Length 58
£117.11 ex VAT
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7/16 x 20 TPI UN Internal Mini Thread Mill 3xD – Carmex MTS 0808 C34 20 UN MT7

7/16 x 20 TPI UN Internal Mini Thread Mill 3xD – Carmex MTS 0808 C34 20 UN MT7

SKU: MTS0808C3420UNMT7

Size 7/16
Pitch 20
Flute Length 3.81
Reach 34.6
Shank Diameter 8
Overall Length 64
£130.12 ex VAT
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7/16 x 14 TPI UN Internal Mini Thread Mill 3xD – Carmex MTS 08077 C35 14 UN MT7

7/16 x 14 TPI UN Internal Mini Thread Mill 3xD – Carmex MTS 08077 C35 14 UN MT7

SKU: MTS08077C3514UNMT7

Size 7/16
Pitch 14
Flute Length 5.44
Reach 35.2
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 3xD – Carmex MTS 08066 C24 24 UN MT7

5/16, 3/8 x 24 TPI UN Internal Mini Thread Mill 3xD – Carmex MTS 08066 C24 24 UN MT7

SKU: MTS08066C2424UNMT7

Size 5/16 3/8
Pitch 24
Flute Length 3.18
Reach 24
Shank Diameter 8
Overall Length 64
£130.12 ex VAT
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M8, M10, M12 x 1.25 Metric Internal Mini Thread Mill 2xD – Carmex MTS 0606 C18 1.25 ISO MT7

M8, M10, M12 x 1.25 Metric Internal Mini Thread Mill 2xD – Carmex MTS 0606 C18 1.25 ISO MT7

SKU: MTS0606C181.25ISOMT7

Size M8 M10 M12
Pitch 1.25
Flute Length 3.75
Reach 18
Overall Length 58
£97.61 ex VAT
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1/4 x 20 TPI UN Internal Mini Thread Mill 3xD – Carmex MTS 06047 C19 20 UN MT7

1/4 x 20 TPI UN Internal Mini Thread Mill 3xD – Carmex MTS 06047 C19 20 UN MT7

SKU: MTS06047C1920UNMT7

Size 1/4
Pitch 20
Flute Length 3.81
Reach 19
Shank Diameter 6
Overall Length 58
£97.61 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.