Size: No 4-481 1/4″: 1/4″Across the Flat: 0.59″
HSS BSPF
1 1/2-11 BSPF Taper Tap
3″-11 BSPF Taper Tap
1/8-28 BSPF Bottom Tap
1/2-14 BSPF Plug Tap
5/8-14 BSPF Taper Tap
1/16-28 BSPF Taper Tap
1″-11 BSPF Plug Tap
1/16-28 BSPF Plug Tap
1″-11 BSPF Taper Tap
2 1/2-11 BSPF Taper Tap