Union Butterfield 1591(UNC) High-Speed Steel Spiral Flute Tap, Heavy-Duty, Black Oxide Finish, Round Shank With Square End, Bottoming Chamfer, 1/2"-13 Thread Size
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<b>[Product Information]</b><br>
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<li>Spiral flute tap design pulls chips back from the tip of the tool and out of the hole to prevent clogging</li>
<li>Spiral flutes for creating threads in blind holes</li>
<li>Black oxide finish improves lubricity, resists corrosion, and helps prevent buildup</li>
<li>Heavy-duty design is suitable for tougher materials</li>
<li>Available in UNC (Unified Coarse) or UNF (Unified Fine) right-hand thread options for different applications</li>
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