Greenfield Threading Steam Oxide Plug Spiral Flute Tap, 1/2-20 Unc Tread Size, Steam Oxide Finish, 3.375 Inches Oal - 1 per EA - 282765

UN coarse UNC taps have fewer threads per inch than UN fine UNF taps. 1 per EA Compared to UNF taps. UNC taps perform better in threading applications on brittle materials and are less likely to cross thread. Coarse threads can withstand more physical abuse than fine threads. Black-oxide finish on these taps retains lubricants to improve the taps' wear resistance and chip flow. Black-oxide taps should only be used on ferrous metals. Applicable Materials=M: Stainless Steel;P: Steel. Cutting Direction=Right. End Shape=Square. Length [Nom]=3.375 in. Material=High Speed Steel. Measuring System=Imperial. No. of Flutes=3. Outside Diam [Max]=0.5 in. Packing Type=Snap Pack. Shank Size Symbol=Square. Style=SFHD. Tap Size=1/2-20 UNC. Tap Type=Machine Tap. Thread - TPI or Pitch=20. Thread Pitch [Nom]=20. Thread Size [Nom]=1/2 in. Type=Spiral Flute Tap. UN coarse UNC taps have fewer threads per inch than UN fine UNF taps. Compared to UNF taps. UNC taps perform better in t