Solid Carbide Thread Mills

789 items
60° Partial Profile 0.5–0.8 mm Pitch Internal & External Thread Mill – Carmex MTI 03024 C7 A60 MT11

60° Partial Profile 0.5–0.8 mm Pitch Internal & External Thread Mill – Carmex MTI 03024 C7 A60 MT11

SKU: MTI03024C7A60MT11

Pitch 0.5-0.8 (48-32)
Reach 7
Shank Diameter 3
Overall Length 39
£95.44 ex VAT
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M3 x 0.5 Metric Internal Thread Mill 3.5xD – Carmex MTI 03024 C10 0.5 ISO MT11

M3 x 0.5 Metric Internal Thread Mill 3.5xD – Carmex MTI 03024 C10 0.5 ISO MT11

SKU: MTI03024C100.5ISOMT11

Size M3 M3.5 M4
Pitch 0.5
Flute Length 0.5
Reach 10.6
Overall Length 39
£95.44 ex VAT
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No. 4 x 40 TPI UN Internal Thread Mill 3.5xD – Carmex MTI 03021 C10 40 UN MT11

No. 4 x 40 TPI UN Internal Thread Mill 3.5xD – Carmex MTI 03021 C10 40 UN MT11

SKU: MTI03021C1040UNMT11

Size No. 4
Pitch 40
Flute Length 1.91
Reach 10.1
Shank Diameter 3
Overall Length 39
£95.44 ex VAT
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No. 2, No. 3 x 56 TPI UN Internal Thread Mill 3.5xD – Carmex MTI 03016 C9 56 UN MT11

No. 2, No. 3 x 56 TPI UN Internal Thread Mill 3.5xD – Carmex MTI 03016 C9 56 UN MT11

SKU: MTI03016C956UNMT11

Size No. 2 No. 3
Pitch 56
Flute Length N/A
Reach 8.9
Shank Diameter 3
Overall Length 39
£95.44 ex VAT
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No. 1 x 72 TPI UN Internal Thread Mill 3.5xD – Carmex MTI 03015 C7 72 UN MT11

No. 1 x 72 TPI UN Internal Thread Mill 3.5xD – Carmex MTI 03015 C7 72 UN MT11

SKU: MTI03015C772UNMT11

Size No. 1
Pitch 72
Flute Length 1.06
Reach 6.6
Shank Diameter 3
Overall Length 39
£95.44 ex VAT
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60° Partial Profile 0.35–0.45 mm Pitch Internal & External Thread Mill – Carmex MTI 03014 C4 A60 MT11

60° Partial Profile 0.35–0.45 mm Pitch Internal & External Thread Mill – Carmex MTI 03014 C4 A60 MT11

SKU: MTI03014C4A60MT11

Pitch 0.35-0.45 (72-56)
Reach 3.7
Shank Diameter 3
Overall Length 39
£95.44 ex VAT
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No. 0 x 80 TPI UN Internal Thread Mill 3.5xD – Carmex MTI 03012 C5 80 UN MT11

No. 0 x 80 TPI UN Internal Thread Mill 3.5xD – Carmex MTI 03012 C5 80 UN MT11

SKU: MTI03012C580UNMT11

Size No. 0
Pitch 80
Flute Length N/A
Reach 5.5
Shank Diameter 3
Overall Length 39
£95.44 ex VAT
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M1.4 x 0.3 Metric Internal Thread Mill 3.5xD – Carmex MTI 03011 C5 0.3 ISO MT11

M1.4 x 0.3 Metric Internal Thread Mill 3.5xD – Carmex MTI 03011 C5 0.3 ISO MT11

SKU: MTI03011C50.3ISOMT11

Size M1.4
Pitch 0.3
Flute Length 0.3
Reach 5
Overall Length 39
£95.44 ex VAT
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3/8-12, 7/16-12 Acme Internal Thread Mill 2xD – Carmex MTI 0250 C08 12 ACME MT8

3/8-12, 7/16-12 Acme Internal Thread Mill 2xD – Carmex MTI 0250 C08 12 ACME MT8

SKU: MTI0250C0812ACMEMT8

Size 3/8 - 12 7/16 - 12
Pitch 12
Reach 19.1
Shank Diameter 1/4
Overall Length 64
£95.44 ex VAT
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5/16-14 Acme Internal Thread Mill 2xD – Carmex MTI 0250 C06 14 ACME MT8

5/16-14 Acme Internal Thread Mill 2xD – Carmex MTI 0250 C06 14 ACME MT8

SKU: MTI0250C0614ACMEMT8

Size 5/16 - 14
Pitch 14
Reach 15.2
Shank Diameter 1/4
Overall Length 64
£95.44 ex VAT
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1/4-16 Acme Internal Thread Mill 1.5xD – Carmex MTI 0250 C04 16 ACME MT8

1/4-16 Acme Internal Thread Mill 1.5xD – Carmex MTI 0250 C04 16 ACME MT8

SKU: MTI0250C0416ACMEMT8

Size 1/4 - 16
Pitch 16
Reach 9.7
Shank Diameter 1/4
Overall Length 64
£95.44 ex VAT
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7/16, 1/2 x 28 TPI UN Internal Hardcut Thread Mill – Carmex MTH 12096 D20 28 UN MT11

7/16, 1/2 x 28 TPI UN Internal Hardcut Thread Mill – Carmex MTH 12096 D20 28 UN MT11

SKU: MTH12096D2028UNMT11

Size 7/16 1/2
Pitch 28
Flute Length 20.4
Reach 20.4
Overall Length 84
£248.34 ex VAT
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1/2 x 13 TPI UN Internal Hardcut Thread Mill – Carmex MTH 12094 D22 13 UN MT11

1/2 x 13 TPI UN Internal Hardcut Thread Mill – Carmex MTH 12094 D22 13 UN MT11

SKU: MTH12094D2213UNMT11

Size 1/2
Pitch 12
Flute Length 22.5
Reach 22.5
Overall Length 84
£248.34 ex VAT
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7/16, 1/2, 3/4, No. 1 x 20 TPI UN Internal Hardcut Thread Mill – Carmex MTH 12092 D21 20 UN MT11

7/16, 1/2, 3/4, No. 1 x 20 TPI UN Internal Hardcut Thread Mill – Carmex MTH 12092 D21 20 UN MT11

SKU: MTH12092D2120UNMT11

Size 7/16 1/2 3/4 1
Pitch 20
Flute Length 21
Reach 21
Overall Length 84
£248.34 ex VAT
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M10 x 1.5 Metric Internal Hardcut Thread Mill – Carmex MTH 1008 D17 1.5 ISO MT11

M10 x 1.5 Metric Internal Hardcut Thread Mill – Carmex MTH 1008 D17 1.5 ISO MT11

SKU: MTH1008D171.5ISOMT11

Size M10
Pitch 1.5
Reach 17.3
Shank Diameter 10
Overall Length 73
£198.53 ex VAT
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3/8, 3/4 x 16 TPI UN Internal Hardcut Thread Mill – Carmex MTH 10074 C16 16 UN MT11

3/8, 3/4 x 16 TPI UN Internal Hardcut Thread Mill – Carmex MTH 10074 C16 16 UN MT11

SKU: MTH10074C1616UNMT11

Size 3/8 3/4
Pitch 16
Flute Length 16.7
Reach 16.7
Overall Length 73
£198.53 ex VAT
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5/16, 3/8, 9/16, 5/8, 11/16 x 24 TPI UN Internal Hardcut Thread Mill – Carmex MTH 08066 D14 24 UN MT11

5/16, 3/8, 9/16, 5/8, 11/16 x 24 TPI UN Internal Hardcut Thread Mill – Carmex MTH 08066 D14 24 UN MT11

SKU: MTH08066D1424UNMT11

Size 5/16-11/16
Pitch 24
Flute Length 14.3
Reach 14.3
Overall Length 64
£172.00 ex VAT
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5/16, 9/16, 5/8, 11/16 x 18 TPI UN Internal Hardcut Thread Mill – Carmex MTH 08057 C14 18 UN MT11

5/16, 9/16, 5/8, 11/16 x 18 TPI UN Internal Hardcut Thread Mill – Carmex MTH 08057 C14 18 UN MT11

SKU: MTH08057C1418UNMT11

Size 5/16-11/16
Pitch 18
Flute Length 14.8
Reach 14.8
Overall Length 64
£172.00 ex VAT
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1/4 x 28 TPI UN Internal Hardcut Thread Mill – Carmex MTH 08052 D11 28 UN MT11

1/4 x 28 TPI UN Internal Hardcut Thread Mill – Carmex MTH 08052 D11 28 UN MT11

SKU: MTH08052D1128UNMT11

Size 1/4
Pitch 28
Flute Length 11.3
Reach 11.3
Overall Length 64
£172.00 ex VAT
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M5 x 0.8 Metric Internal Hardcut Thread Mill – Carmex MTH 0604 C9 0.8 ISO MT11

M5 x 0.8 Metric Internal Hardcut Thread Mill – Carmex MTH 0604 C9 0.8 ISO MT11

SKU: MTH0604C90.8ISOMT11

Size M5
Pitch 0.8
Reach 9.2
Shank Diameter 6
Overall Length 58
£129.17 ex VAT
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1/4 x 20 TPI UN Internal Hardcut Thread Mill – Carmex MTH 06048 C12 20 UN MT11

1/4 x 20 TPI UN Internal Hardcut Thread Mill – Carmex MTH 06048 C12 20 UN MT11

SKU: MTH06048C1220UNMT11

Size 1/4
Pitch 20
Flute Length 12.1
Reach 12.1
Overall Length 58
£129.17 ex VAT
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No. 10, No. 12 x 32 TPI UN Internal Hardcut Thread Mill – Carmex MTH 06038 C9 32 UN MT11

No. 10, No. 12 x 32 TPI UN Internal Hardcut Thread Mill – Carmex MTH 06038 C9 32 UN MT11

SKU: MTH06038C932UNMT11

Size No. 10 No. 12
Pitch 32
Flute Length 9.7
Reach 9.7
Overall Length 58
£129.17 ex VAT
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No. 8 x 32 TPI UN Internal Hardcut Thread Mill – Carmex MTH 06032 C7 32 UN MT11

No. 8 x 32 TPI UN Internal Hardcut Thread Mill – Carmex MTH 06032 C7 32 UN MT11

SKU: MTH06032C732UNMT11

Size No. 8
Pitch 32
Flute Length 8.1
Reach 8.1
Overall Length 58
£129.17 ex VAT
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M4 x 0.7 Metric Internal Hardcut Thread Mill – Carmex MTH 06031 C7 0.7 ISO MT11

M4 x 0.7 Metric Internal Hardcut Thread Mill – Carmex MTH 06031 C7 0.7 ISO MT11

SKU: MTH06031C70.7ISOMT11

Size M4
Pitch 0.7
Reach 7.4
Shank Diameter 6
Overall Length 58
£129.17 ex VAT
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No. 6 x 32 TPI UN Internal Hardcut Thread Mill – Carmex MTH 06026 C5 32 UN MT11

No. 6 x 32 TPI UN Internal Hardcut Thread Mill – Carmex MTH 06026 C5 32 UN MT11

SKU: MTH06026C532UNMT11

Size No. 6
Pitch 32
Flute Length 6.5
Reach 6.5
Overall Length 58
£129.17 ex VAT
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No. 5, No. 6 x 40 TPI UN Internal Hardcut Thread Mill – Carmex MTH 06025 C6 40 UN MT11

No. 5, No. 6 x 40 TPI UN Internal Hardcut Thread Mill – Carmex MTH 06025 C6 40 UN MT11

SKU: MTH06025C640UNMT11

Size No. 5 No. 6
Pitch 40
Flute Length 6
Reach 6
Overall Length 58
£129.17 ex VAT
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M3 x 0.5 Metric Internal Hardcut Thread Mill – Carmex MTH 06024 C5 0.5 ISO MT11

M3 x 0.5 Metric Internal Hardcut Thread Mill – Carmex MTH 06024 C5 0.5 ISO MT11

SKU: MTH06024C50.5ISOMT11

Size M3
Pitch 0.5
Reach 5.3
Shank Diameter 6
Overall Length 58
£129.17 ex VAT
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M10 x 1.5 Metric Internal Drill Thread Mill – Carmex MTD 1208 B19 1.5 ISO MT7

M10 x 1.5 Metric Internal Drill Thread Mill – Carmex MTD 1208 B19 1.5 ISO MT7

SKU: MTD1208B191.5ISOMT7

Size M10
Pitch 1.5
Flute Length 23.8
Reach 23.8
Shank Diameter 12
Overall Length 80
£211.52 ex VAT
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M10 x 1.5 Metric Internal Drill Thread Mill – Carmex MTD 1208 B19 1.5 ISO K20

M10 x 1.5 Metric Internal Drill Thread Mill – Carmex MTD 1208 B19 1.5 ISO K20

SKU: MTD1208B191.5ISOK20

Size M10
Pitch 1.5
Flute Length 23.8
Reach 23.8
Shank Diameter 12
Overall Length 80
£192.32 ex VAT
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7/16 x 14 TPI UN Internal Drill Thread Mill – Carmex MTD 12088 B21 14 UN MT7

7/16 x 14 TPI UN Internal Drill Thread Mill – Carmex MTD 12088 B21 14 UN MT7

SKU: MTD12088B2114UNMT7

Thread Mill Style Drill Mill + Chamfer + Coolant
Thread Form UN (UNC UNF UNEF UNS)
Pitch 14
Finish MT7
£211.52 ex VAT
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3/8 x 24 TPI UN Internal Drill Thread Mill – Carmex MTD 12082 B19 24 UN MT7

3/8 x 24 TPI UN Internal Drill Thread Mill – Carmex MTD 12082 B19 24 UN MT7

SKU: MTD12082B1924UNMT7

Thread Mill Style Drill Mill + Chamfer + Coolant
Thread Form UN (UNC UNF UNEF UNS)
Pitch 24
Finish MT7
£211.52 ex VAT
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3/8 x 16 TPI UN Internal Drill Thread Mill – Carmex MTD 12075 B19 16 UN MT7

3/8 x 16 TPI UN Internal Drill Thread Mill – Carmex MTD 12075 B19 16 UN MT7

SKU: MTD12075B1916UNMT7

Thread Mill Style Drill Mill + Chamfer + Coolant
Thread Form UN (UNC UNF UNEF UNS)
Pitch 16
Finish MT7
£211.52 ex VAT
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5/16 x 24 TPI UN Internal Drill Thread Mill – Carmex MTD 10066 B15 24 UN MT7

5/16 x 24 TPI UN Internal Drill Thread Mill – Carmex MTD 10066 B15 24 UN MT7

SKU: MTD10066B1524UNMT7

Thread Mill Style Drill Mill + Chamfer + Coolant
Thread Form UN (UNC UNF UNEF UNS)
Pitch 24
Finish MT7
£166.61 ex VAT
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M8 x 1.25 Metric Internal Drill Thread Mill – Carmex MTD 10064 B15 1.25 ISO K20

M8 x 1.25 Metric Internal Drill Thread Mill – Carmex MTD 10064 B15 1.25 ISO K20

SKU: MTD10064B151.25ISOK20

Size M8
Pitch 1.25
Flute Length 18.7
Reach 18.7
Shank Diameter 10
Overall Length 74
£151.41 ex VAT
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5/16 x 18 TPI UN Internal Drill Thread Mill – Carmex MTD 10061 B15 18 UN MT7

5/16 x 18 TPI UN Internal Drill Thread Mill – Carmex MTD 10061 B15 18 UN MT7

SKU: MTD10061B1518UNMT7

Thread Mill Style Drill Mill + Chamfer + Coolant
Thread Form UN (UNC UNF UNEF UNS)
Pitch 18
Finish MT7
£166.61 ex VAT
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1/4 x 28 TPI UN Internal Drill Thread Mill – Carmex MTD 08052 B13 28 UN MT7

1/4 x 28 TPI UN Internal Drill Thread Mill – Carmex MTD 08052 B13 28 UN MT7

SKU: MTD08052B1328UNMT7

Thread Mill Style Drill Mill + Chamfer + Coolant
Thread Form UN (UNC UNF UNEF UNS)
Pitch 28
Finish MT7
£137.33 ex VAT
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1/4 x 20 TPI UN Internal Drill Thread Mill – Carmex MTD 08048 B12 20 UN MT7

1/4 x 20 TPI UN Internal Drill Thread Mill – Carmex MTD 08048 B12 20 UN MT7

SKU: MTD08048B1220UNMT7

Thread Mill Style Drill Mill + Chamfer + Coolant
Thread Form UN (UNC UNF UNEF UNS)
Pitch 20
Finish MT7
£137.33 ex VAT
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M6 x 1 Metric Internal Drill Thread Mill – Carmex MTD 08048 B12 1.0 ISO K20

M6 x 1 Metric Internal Drill Thread Mill – Carmex MTD 08048 B12 1.0 ISO K20

SKU: MTD08048B121.0ISOK20

Size M6
Pitch 1
Flute Length 14.8
Reach 14.8
Shank Diameter 8
Overall Length 62
£124.94 ex VAT
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M5 x 0.8 Metric Internal Drill Thread Mill – Carmex MTD 0604 B9 0.8 ISO K20

M5 x 0.8 Metric Internal Drill Thread Mill – Carmex MTD 0604 B9 0.8 ISO K20

SKU: MTD0604B90.8ISOK20

Size M5
Pitch 0.8
Flute Length 11.9
Reach 11.9
Shank Diameter 6
Overall Length 54
£105.71 ex VAT
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No. 10 x 32 TPI UN Internal Drill Thread Mill – Carmex MTD 06038 B9 32 UN MT7

No. 10 x 32 TPI UN Internal Drill Thread Mill – Carmex MTD 06038 B9 32 UN MT7

SKU: MTD06038B932UNMT7

Thread Mill Style Drill Mill + Chamfer + Coolant
Thread Form UN (UNC UNF UNEF UNS)
Pitch 32
Finish MT7
£116.16 ex VAT
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M4 x 0.7 Metric Internal Drill Thread Mill – Carmex MTD 06032 B7 0.7 ISO K20

M4 x 0.7 Metric Internal Drill Thread Mill – Carmex MTD 06032 B7 0.7 ISO K20

SKU: MTD06032B70.7ISOK20

Size M4
Pitch 0.7
Flute Length 9.8
Reach 9.8
Shank Diameter 6
Overall Length 54
£105.71 ex VAT
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M26 x 2 Metric Internal Coolant Bore Thread Mill – Carmex MTB 2020 F41 2.0 ISO MT7

M26 x 2 Metric Internal Coolant Bore Thread Mill – Carmex MTB 2020 F41 2.0 ISO MT7

SKU: MTB2020F412.0ISOMT7

Size M26
Pitch 2
Flute Length 41
Reach 41
Overall Length 105
£261.57 ex VAT
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G1 BSP 11 TPI Internal & External Coolant Bore Thread Mill – Carmex MTB 2020 E47 11 W MT7

G1 BSP 11 TPI Internal & External Coolant Bore Thread Mill – Carmex MTB 2020 E47 11 W MT7

SKU: MTB2020E4711WMT7

Size N/A
Pitch 11
Flute Length 47.3
Reach 47.3
Overall Length 105
£261.57 ex VAT
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No. 1, 1/8, –, No. 1, 1/4 x 7 TPI UN Internal Coolant Bore Thread Mill – Carmex MTB 2020 D45 7 UN MT7

No. 1, 1/8, –, No. 1, 1/4 x 7 TPI UN Internal Coolant Bore Thread Mill – Carmex MTB 2020 D45 7 UN MT7

SKU: MTB2020D457UNMT7

Size 1 1/8 - 1 1/4
Pitch 7
Flute Length 45.3
Reach 45.3
Overall Length 105
£261.57 ex VAT
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M27, M28, M30 x 3 Metric Internal Coolant Bore Thread Mill – Carmex MTB 2020 D43 3.0 ISO MT7

M27, M28, M30 x 3 Metric Internal Coolant Bore Thread Mill – Carmex MTB 2020 D43 3.0 ISO MT7

SKU: MTB2020D433.0ISOMT7

Size M27 M28 M30
Pitch 3
Flute Length 43.5
Reach 43.5
Overall Length 105
£261.57 ex VAT
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≥2 1/2 NPT 8 TPI Internal & External Coolant Bore Thread Mill – Carmex MTB 2020 D39 8 NPT MT7

≥2 1/2 NPT 8 TPI Internal & External Coolant Bore Thread Mill – Carmex MTB 2020 D39 8 NPT MT7

SKU: MTB2020D398NPTMT7

Size 2 1/2 +
Pitch 8
Flute Length 39.7
Reach 39.7
Shank Diameter 20
Overall Length 105
£261.57 ex VAT
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2 1/2 NPTF 8 TPI Internal & External Coolant Bore Thread Mill – Carmex MTB 2020 D39 8 NPTF MT7

2 1/2 NPTF 8 TPI Internal & External Coolant Bore Thread Mill – Carmex MTB 2020 D39 8 NPTF MT7

SKU: MTB2020D398NPTFMT7

Size 2 1/2 +
Pitch 8
Flute Length 39.7
Reach 39.7
Shank Diameter 20
Overall Length 105
£261.57 ex VAT
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1–2 NPT 11.5 TPI Internal & External Coolant Bore Thread Mill – Carmex MTB 2020 D29 11.5 NPT MT7

1–2 NPT 11.5 TPI Internal & External Coolant Bore Thread Mill – Carmex MTB 2020 D29 11.5 NPT MT7

SKU: MTB2020D2911.5NPTMT7

Size 1 - 2
Pitch 11.5
Flute Length 29.8
Reach 29.8
Shank Diameter 20
Overall Length 105
£261.57 ex VAT
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1–2 NPTF 11.5 TPI Internal & External Coolant Bore Thread Mill – Carmex MTB 2020 D29 11.5 NPTF MT7

1–2 NPTF 11.5 TPI Internal & External Coolant Bore Thread Mill – Carmex MTB 2020 D29 11.5 NPTF MT7

SKU: MTB2020D2911.5NPTFMT7

Size 1 - 2
Pitch 11.5
Flute Length 29.8
Reach 29.8
Shank Diameter 20
Overall Length 105
£261.57 ex VAT
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M20 x 1.5 Metric Internal Coolant Bore Thread Mill – Carmex MTB 1616 F33 1.5 ISO MT7

M20 x 1.5 Metric Internal Coolant Bore Thread Mill – Carmex MTB 1616 F33 1.5 ISO MT7

SKU: MTB1616F331.5ISOMT7

Size M20
Pitch 1.5
Flute Length 33.8
Reach 33.8
Overall Length 105
£216.59 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.