NPT Thread Mill – Solid Carbide Tapered Pipe Thread Milling Cutter, PVD Coated
- Brand: Bwin
- Material: Ultra-fine grain carbide
- Thread Type: Internal; External
- Thread Size: 1/16, 1/8, 3/8, 3/4, 1/2, 1
- Flutes: 3 flutes, 4 flutes, 5 flutes
- Coated: PVD Coating
- Cutting Diameter (mm): 5.3mm-19.9mm
- Shank Diameter (mm): 6mm-20mm
- Flute Length (mm): 10mm-33mm
- Overall Diameter (mm): 60mm-100mm
- Package: 1pcs/plastic pipe
- Suitable for: 40Cr, Cr12, SUS, P20, S136, 718, manganese steel, titanium alloy, stainless iron
Product Overview:
NPT thread mills run on ultra-fine grain solid carbide with a heat-resistant PVD coating. In addition, each tool cuts standard 1:16 tapered pipe threads into alloy steel, tool steel, mold steel, stainless steel, manganese steel, titanium alloy and superalloy. As a result, the multi-tooth profile cuts full thread depth in a single helical pass. Therefore, machine shops use these cutters on CNC machining centers for leak-tight pipe and valve connections.
Product Features:
First, an NPT thread mill is a solid carbide NPT thread mill designed for American standard tapered pipe threads. In addition, Walter machine ground thread mill technology ensures exact pitch lines and the standard 1:16 taper angle. As a result, an ultra-fine grain carbide substrate with PVD coating protects cutting edges against thermal wear and chip welding during continuous cycle operations.
Applications and Machining Materials:
Specifically, the line spans 1/16 to 1 inch NPT thread mill nominal sizes for standard NPT and NPTF ports. Likewise, these tools machine alloy steel, mold steel, tool steel, 304/316 stainless steel, manganese steel, titanium alloys superalloy. Consequently, CNC machining centers and mill-turn lathes run these cutters across oil and gas, hydraulic manifolds, aerospace fittings, and high-pressure fluid valves.
NPT Thread Mill Size Chart:
| Model | Cutting Dia.(D) | Effective length(L1) | Shank Dia.(d) | Overall length (L) | Bottom hole dia. | Flutes |
| NPT1/16-27*d6*60L-Q | 5.3 | 10 | 6 | 60 | 6.3 | 3 |
| NPT1/8-27*d8*65L-Q | 7.95 | 15 | 8 | 65 | 8.5 | 3 |
| NPT1/4-18*d10*75L-Q | 9.9 | 15.5 | 10 | 75 | 11.1 | 4 |
| NPT3/8-18*d12*75L-Q | 11.9 | 16 | 12 | 75 | 14.5 | 4 |
| NPT1/2-14*d12*83L-Q | 11.9 | 25 | 12 | 83 | 17.7 | 4 |
| NPT3/4-14*d12*83L-Q | 11.9 | 25 | 12 | 83 | 23 | 4 |
| NPT1/2-14*d16*100L-Q | 15.95 | 30 | 16 | 100 | 17.7 | 5 |
| NPT1-11.5*d20*100L-Q | 19.9 | 33 | 20 | 100 | 29 | 5 |
| NPT1-11.5*d16*100L-Q | 15.9 | 33 | 16 | 100 | 29 | 5 |
FAQs:
1. What pipe thread sizes does this NPT thread milling cutter cover?
Specifically, our NPT thread milling cutter program covers nominal pipe sizes from 1/16 to 1 inch NPT thread mill standards with 27, 18, 14, and 11.5 TPI pitches. In addition, each tool maintains the standard 1°47′ (1:16) taper angle. Therefore, engineers can consult our NPT thread mill size chart to match tool diameters and flute lengths to hole depths.
2. Can I use this carbide pipe thread mill for NPTF Dryseal ports?
First, this carbide pipe thread mill cuts standard NPT profiles that require PTFE tape or pipe sealant. By contrast, an NPTF thread mill cuts crest and root limits that crush together to create a mechanical dry seal. Therefore, verify your assembly specification before ordering, or request our dedicated NPTF tooling variants for fuel and high-pressure hydraulic manifolds.
3. How does this NPT thread mill perform in 304/316 stainless steel and titanium alloy?
First, our ultra-fine grain carbide thread mill core resists edge chipping when cutting work-hardening materials. In addition, the PVD coated thread mill surface limits friction and prevents built-up edge in austenitic grades. Therefore, this dedicated NPT thread mill for stainless steel machines alloy steel, tool steel, mold steel, manganese steel, titanium alloy, and superalloy.
4. Does this tapered thread mill support blind-hole threading with internal coolant?
Specifically, this standard tapered thread mill supports external flood coolant and external air blast only, without internal coolant channels. In addition, the precision helical flutes efficiently evacuate chips out of blind holes under external nozzle pressure. Therefore, operators prevent chip recutting and achieve clean blind pipe threads by directing external coolant or compressed air directly into the bore.
5. What dimensional tolerance does the Walter ground tool maintain, and can you customize shanks?
Specifically, every Walter machine ground thread mill holds pitch diameter tolerances within ±0.005 mm across production batches. In addition, we manufacture custom neck lengths, reinforced shanks, and specialized PVD coatings to customer drawings. Consequently, machine shops obtain reliable NPT pipe thread cutter performance with low minimum order quantities and fast dispatch.