Size: 5/16-18Thickness: 5/16″Across the Flat: 0.69″
HSS BSPF
1/4-19 BSPF Bottom Tap
1 1/2-11 BSPF Taper Tap
3″-11 BSPF Taper Tap
3/4-14 BSPF Taper Tap
7/8-14 BSPF Plug Tap
2 1/2-11 BSPF Taper Tap
1/8-28 BSPF Taper Tap
1/2-14 BSPF Bottom Tap
1/2-14 BSPF Plug Tap
1/4-19 BSPF Plug Tap