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System of Measurement System of Measurement |
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Number of Flutes Number of Flutes |
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Chamfer Type Chamfer Type |
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Finish Finish |
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Number of Tapping Ends Number of Tapping Ends |
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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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Shank Type Shank Type |
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![]() | Square |
DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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Individual/Set Individual/Set |
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![]() | Straight |
Compressed Gas Thread Taps

Also known as National Gas Outlet (NGO) taps, these tap threads in sizes used for compressed gas cylinders and valves. They're made of high-speed steel and are for use on most metal and plastic. With a square shank, they're compatible with tap wrenches and tap holders for drill presses and milling machines. All have a bottoming chamfer with 1-2 chamfered cutting threads, so they're suitable for threading close to the bottom of closed-end holes.
For technical drawings and 3-D models, click on a part number.