NPT Thread Mill
NPT Thread Mill - Premium Carbide Thread Milling Cutter for Pipe Threads
• Standard NPT Design: Strictly complies with NPT thread standards, with 60° thread angle and 1:16 taper, ensuring perfect matching with standard pipe threads and excellent sealing performance after assembly — no leakage risk in high-pressure applications.
• High-Quality Material Options: Available in solid carbide (most popular), HSS-Co, and indexable insert types. Solid carbide version features ultra-fine grain substrate, high hardness (HRC 90+), and strong wear resistance, suitable for processing stainless steel, carbon steel, alloy steel, and other difficult-to-machine materials.
• Advanced Coating Technology: Equipped with TiAlN or TiCN coating, which enhances heat resistance (up to 900°C) and reduces friction coefficient, effectively preventing built-up edge and material adhesion. Extends tool life by 2-3 times compared to uncoated thread mills.
• Multiple Tooth Types for Versatility: Available in single tooth, 3-tooth, and full form (full profile) designs to meet different production needs:
• Single Tooth: High versatility, one tool fits multiple NPT sizes, ideal for small batches, deep holes, and large-diameter threads.
• 3-Tooth: Balanced cutting efficiency and tool life, stable performance for medium-batch production and stainless steel processing.
• Full Form: Cuts complete NPT thread profile in one pass, ultra-fast, perfect for mass production of valves and pipe fittings.
• Optimized Flute Design: Special spiral flute structure ensures smooth chip evacuation, avoiding chip jamming in deep blind holes. The optimized back clearance angle reduces cutting vibration and improves thread surface finish (Ra ≤ 0.8μm).
• CNC Compatibility: Suitable for all 3-axis, 4-axis, and 5-axis CNC machining centers, easy to program and operate. Supports both internal and external NPT thread machining.
• Cost-Effective Solution: Compared to traditional taps, our NPT thread mill has no risk of breakage, reduces workpiece scrap rate, and can be regrinded after wear — lowering overall production costs in long-term use.
Product Specifications
Thread Standard | Thread Angle | Taper | Material | Coating | Tooth Type | Available Sizes |
NPT / NPTF | 60° | 1:16 | Solid Carbide / HSS-Co / Indexable Insert | TiAlN / TiCN / Uncoated | Single Tooth / 3-Tooth / Full Form | NPT 1/16, 1/8, 1/4, 3/8, 1/2, 3/4, 1", 1-1/4", 1-1/2", 2" (Custom sizes available) |
Application Scenarios Our NPT Thread Mill is widely used in industries that require high-precision, high-sealing taper pipe threads, including:
• Oil & Gas Industry: Pipeline connections, oil well equipment, gas valves
• Hydraulic & Pneumatic Industry: Hydraulic cylinders, hydraulic valves, air compressor parts
• Valve & Pipe Fitting Industry: Valve bodies, pipe connectors, flanges, pipe joints • Automotive Industry: Engine oil pipelines, brake system pipe threads
• General Machinery: Industrial machinery, precision equipment, mold parts with NPT threads