NPT stands for National Pipe Taper. It's a U.S. standard for tapered threads used on pipes and fittings. The taper (approximately 1.7899° or 3/4 inch per foot) allows the threads to form a tight, leak-resistant seal when torqued together. A plug tap is one of the three common types of hand taps, characterized by its moderate tapering at the tip. It typically has 3 to 5 tapered threads, making it suitable for general-purpose threading, especially in through holes.
Product Data
Specification
Tap Size
Drill Size
Tap and Drill Set
1/16”NPT Tap
“D”Drill Bit
1/16”NPT Tap and Drill Set
1/8”NPT Tap
“R”Drill Bit
1/8”NPT Tap and Drill Set
1/4”NPT Tap
7/16”Drill Bit
1/4”NPT Tap and Drill Set
3/8”NPT Tap
37/64”Drill Bit
3/8”NPT Tap and Drill Set
1/2”NPT Tap
23/32”Drill Bit
1/2”NPT Tap and Drill Set
3/4”NPT Tap
59/64”Drill Bit
3/4”NPT Tap and Drill Set
1”NPT Tap
1-5/32”Drill Bit
1”NPT Tap and Drill Set
1-1/4”NPT Tap
1-1/2”Drill Bit
Only Sold Individually
1-1/2”NPT Tap
1-47/64”Drill Bit
Only Sold Individually
2”NPT Tap
2-7/32”Drill Bit
Only Sold Individually
2-1/2”NPT Tap
2-5/8”Drill Bit
Only Sold Individually
3”NPT Tap
3-1/4”Drill Bit
Only Sold Individually
3-1/2”NPT Tap
3-3/4”Drill Bit
Only Sold Individually
4”NPT Tap
4-1/4”Drill Bit
Only Sold Individually
Applications
Through-Hole Threading: Ideal for creating threads in holes that go entirely through the material, allowing easy chip evacuation and full thread formation.
Blind Hole Threading:Suitable for threading holes that do not go all the way through the material, stopping short of the bottom.
General-Purpose Threading: Commonly used in various materials like steel, aluminum, brass, and plastics for creating standard threads.
Maintenance and Repair:Useful for cleaning or rethreading existing threads in maintenance tasks.
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