Dormer 1/2-20 HSS-E-PM Machine Tap TiAlN/Top White Ring Bottoming 4FL H5 Tap Cutter 323″ Thread Diameter Size (TDZ)

323″  Thread Diameter Size (TDZ) 7/16″  Thread Cutting Part Length (THL) 0

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CoroCut 3 -style T (N123T3-CM)

They will also bridge openings

Drill Bit Size / Cutting Diameter (DC) 23/64″  Cutting Edge Material Carbide  Drill Bit Size / Cutting Diameter (DC) - Inch 23/64″  Tool Type Solid Carbide Drill  Decimal Equivalent 0

Dormer 1/2-20 HSS-E-PM Machine Tap TiAlN/Top White Ring Bottoming 4FL H5 Tap Cutter 323″ Thread Diameter Size (TDZ)DORMER HSS E PM MACHINE TAP Thread Diameter Size (TDZ) 1 2 Tool Type Machine Tap Threads per Inch (TPI) 20 Coating TiAlN Top Thread Standard UNF Tapping Prehole Diameter (Pre hole) 29 64 Overall Length (OAL) 3. 937 Flute Length 0. 827 Thread Cutting Part Length (THL) 0. 827 Flute Type Straight Connection Diameter Machine Side (DCONMS) 0. 367 Style Bottoming Flute Count (NOF) 4 Cutting Direction (HAND) Right Hand Flute Helix Angle (FHA) 0 Degrees