External and Internal Carbide Thread Milling Cutter 18 TPI 3/8"x18 NPT

External and Internal Carbide Thread Milling Cutter 18 TPI 3/8''x18 NPT
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Our Price:  £102.00(Exc. 20% VAT)(£122.40 Inc. VAT)

Model:  H12119EN18NPT
Brand:  APT Carbide End Mills

Shipped Weight:  160 g

Availability:  

2 in stock, no more available  

2 in stock, no more available

APT Carbide End Mills

Carbide End Mills APT Brand


External and Internal Solid Carbide Thread Milling Cutter 18 TPI 3/8"x18 NPT.

60° NPT National Pipe Thread Defined by USAS B2.1:1968 Tolerance Class Standard NPT.

For Tapered type Thread.

Max Thread Depth = 2 x Diameter or less.

NPT Thread Milling Cutters in this range can be used to cut both Internal and External Threads.

Suitable for Steel, Stainless Steel, High Temperature Alloys, Titanium Alloys, Aluminium, Copper and Copper Alloys, Cast Iron and Hardened Steel up to 55HRC.

Details and Dimensions for H12119EN18NPT (mm)
ThreadTPIShank DiameterHead Diameter
3/8"x18 NPT181211.9
LengthFlute LengthFlutesNumber of TeethBore Diameter
8314.141014.7
Recommended Speeds and Feeds - Or use software or online calculator for general thread milling and match the tool type.
In the case of persistent tool breakage increase the number of passes or try mini or single tooth cutters.
Entry feed can be ignored for aluminium non-ferrous metalsand plastics.
Using more passes will increase machining time but will create smaller chips so recutting chips may be less problematic.
Mild to Alloy Steel <HB180Mild to Alloy Steel HB180-280Mild Steel, Alloy Steel HB280-350Stainless
SS400, SC10C Etc.S45C, SCM440 Etc.SNCM439 Etc.SUS304, SUS316
G6.3 12K Balanced Tools RPM = 3500G6.3 12K Balanced Tools RPM = 3300G6.3 12K Balanced Tools RPM = 2800G6.3 12K Balanced Tools RPM = 2200
G2.5 20K Balanced Tools RPM = 8500G2.5 20K Balanced Tools RPM = 8500G2.5 20K Balanced Tools RPM = 8500G2.5 20K Balanced Tools RPM = 8000
Tool Entry Feed = 30mm/minTool Entry Feed = 30mm/minTool Entry Feed = 24mm/minTool Entry Feed = 24mm/min
Cutting Feed = 100mm/minCutting Feed = 100mm/minCutting Feed = 80mm/minCutting Feed = 80mm/min
Cut in 4-6 passesCut in 4-6 passesCut in 4-6 passesCut in 4-6 passes
Application Choice GoodApplication Choice GoodApplication Choice GoodOK or use Titanium Series
Grey Cast IronDuctile IronAluminium Alloy Si<5%
FC300FCD450Plastic, Bronze, Cooper Alloys
G6.3 12K Balanced Tools RPM = 3500G6.3 12K Balanced Tools RPM = 4200-4800G6.3 12K Balanced Tools RPM = 4200-4800
G2.5 20K Balanced Tools RPM = 8500G2.5 20K Balanced Tools RPM = 8500G2.5 20K Balanced Tools RPM = 8500

Tool Entry Feed = 30mm/min

Tool Entry Feed = 30-36mm/minTool Entry Feed = 150-180mm/min
Cutting Feed = 100mm/minCutting Feed = 100-120mm/minCutting Feed = 150-180mm/min
Cut in 4-6 passesCut in 4-6 passesCut in 4-5 passes
Application Choice GoodApplication Choice GoodOK or use DLC Coated

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