1/2-20 SAE left hand thread pitch, 3-3/8" in length, 1-3/4" thread length, Steel construction, Four flutes.
Industrial Tap, 11/16-18 SAE, Left Hand LH Thread
Industrial Tap, 3/4-16 SAE-Right Hand RH Thread
Industrial Tap - 3/8-24 LH Thread, SAE
Irwin Hanson 26377 Deluxe Tap/Die SAE/Metric 117 Set Set Incomplete
Jawco T6F Thread Restorer Tap Set SAE Hex Rethreading Tool Set USA
Bowman Tools USA HSS High Speed Steel Machinist Tap Set SAE To 1" NF NC Vintage