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| Brand Name: | XRTOOLS |
| Model Number: | 1/2NPT |
| MOQ: | 100pcs |
| Price: | $1.35-$45.55/PCS |
| Delivery Time: | 25-30 days |
| Payment Terms: | L/C, T/T, Western Union |
Our ANSI Standard NPT (National Pipe Taper) Straight Flute Taps are the industry standard for creating leak-proof, pressure-tight mechanical seals in piping systems. Manufactured strictly according to ANSI B1.20.1 specifications, these taps feature the mandatory 1°47' taper angle required for "Dryseal" applications in hydraulic, pneumatic, and plumbing sectors.
Crafted from premium HSS-M2 (High-Speed Steel), these taps offer a superior balance of toughness and edge retention. The straight flute design provides maximum cross-sectional strength, making them ideal for both hand-tapping and machine-tapping in through-holes or shallow blind holes across a wide range of ferrous and non-ferrous metals.
| Parameter | Specification (Technical Data) |
| Standard | ANSI B1.20.1 / ASME B1.21 |
| Thread Type | NPT (National Pipe Taper) |
| Material Grade | HSS-M2 (AISI M2) |
| Flute Geometry | Straight Flute (High Rigidity) |
| Process | Fully Ground (High-Precision Threads) |
| Hardness | HRC 63-65 |
| Surface Finish | Bright Finish (Standard) / TiN / VAP (Steam Oxide) |
| Chamfer | 2.5 - 3.5 Threads (Plug Style) |
ANSI NPT Size Chart
| Nominal Size (Inch) | Threads Per Inch (TPI) | Overall Length (L1) | Thread Length (L2) | Shank Diameter (D) |
| 1/8" - 27 NPT | 27 | 2-1/8" (54mm) | 3/4" (19mm) | 0.3125" |
| 1/4" - 18 NPT | 18 | 2-7/16" (62mm) | 1-1/16" (27mm) | 0.4375" |
| 3/8" - 18 NPT | 18 | 2-9/16" (65mm) | 1-1/16" (27mm) | 0.5625" |
| 1/2" - 14 NPT | 14 | 3-1/8" (79mm) | 1-3/8" (35mm) | 0.7000" |
| 3/4" - 14 NPT | 14 | 3-1/4" (82mm) | 1-3/8" (35mm) | 0.9063" |
| 1" - 11.5 NPT | 11.5 | 3-3/4" (95mm) | 1-3/4" (44mm) | 1.1250" |
| 1-1/4" - 11.5 NPT | 11.5 | 4" (102mm) | 1-3/4" (44mm) | 1.3125" |
• Core Function: Designed for creating tapered internal threads where the thread itself provides the seal (often with the aid of thread sealant or PTFE tape).
• Target Materials: * Carbon & Alloy Steels: Excellent performance in structural steel and pipe fittings.
• Cast Iron: The straight flute handles abrasive cast iron chips efficiently.
• Brass & Copper Alloys: Ideal for plumbing manifolds and brass valves.
• Aluminum Alloys: Provides clean threads in pneumatic blocks.
• Industries: Oil & Gas equipment, HVAC systems, Automotive fluid lines, and Municipal water treatment.
For large-scale importers and wholesalers, we focus on Supply Chain Integrity and Packaging Reliability:
• Packaging Solutions:
• Individual Protection: Each NPT tap is housed in a high-impact Square Plastic Tube with anti-rust oil to ensure "Factory-Fresh" arrival after sea transit.
• Bulk Sets: Available in 6-pc Sets (1/8"-1") in custom aluminum or wooden cases for retail/MRO markets.
• Quality Assurance: 100% inspection using ANSI-certified Limit Gauges. We provide Material Test Reports (MTR) verifying the HSS-M2 composition.
• OEM & Branding: High-definition Laser Marking on shanks (Your Logo + Size + Material) and customized barcode labeling for automated warehouse scanning.
• Global Logistics: Optimized master carton dimensions for 20ft/40ft container loading, ensuring maximum protection and minimum shipping cost per unit.
• Q: Why use Straight Flute for NPT instead of Spiral Flute?
• A: NPT tapping involves high torque due to the taper. Straight flutes provide the maximum core thickness (rigidity), preventing the tap from twisting or breaking under the high radial pressure of pipe threading.
• Q: Is HSS-M2 better than 4341 for NPT taps?
• A: Yes. M2 contains higher Tungsten and Molybdenum, providing better wear resistance. For industrial B2B clients, M2 significantly reduces "Cost-Per-Hole" due to its much longer tool life.
• Q: Do you support NPTF (Dryseal) standards?
• A: Yes, we can manufacture NPTF (National Pipe Taper Fuel) taps on request, which require even tighter tolerances for interference-fit sealing without sealants.
• Q: What is the lead time for bulk OEM orders?
• A: Typically 25-35 days for full-scale production. Stock items for common ANSI sizes can be dispatched within 7 days.
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