66 Pc. Machine Screw / Fractional and Hex Die Set Set includes:. Machine Screw Plug Tap and 5/8 Hexagon Dies in sizes : 4 - 40 NC, 6 - 32 NC, 8 - 32 NC, 10 - 24 NC, 10 - 32 NF, 12 - 24 NC. Fractional Thread Plug Tap and 1 Hexagon Dies in sizes : 1/4 - 20 NC, 1/4 - 28 NF, 5/16 - 18 NC, 5/16 - 24 NF, 3/8 - 16 NC, 3/8 - 24 NF, 7/16 - 14 NC, 7/16 - 20 NF, 1/2 - 13 NC, 1/2 - 20 NF. Fractional Thread Plug Tap and 1-7/16. Hexagon Dies in sizes : 9/16 - 12 NC, 9/16 - 18 NF, 5/8 - 11 NC, 5/8 - 18 NF, 3/4 - 10 NC, 3/4 - 16 NF. Fractional Thread Plug Tap and 1-13/16 Hexagon Dies in sizes : 7/8 - 9 NC, 7/8 - 14 NF, 1 - 8 NC, 1 - 14 NS. Pipe Thread Plug Tap and 1 Hexagon Dies in sizes : 1/8 - 27 NPT, 1/4 - 18 NPT. Adj. Die Stock - 1 Hexagon Dies. Adj. Die Stock - 1-7/16 Hexagon Dies. Adj. Die Stock - 1-13/16 Hexagon Dies. Plain Die Stock - 5/8 Hexagon Dies. Adj. Handle Tap Wrench-Taps No. 0 - 1/2. Adj. Handle Tap Wrench-Taps 1/4 - 1. Two-in-One Tap Wrench-Taps 1/4 - 1/2. T-Handle Wrench - Taps No. 0 to 1/4. 18 Leaf Standard Thread Pitch Gauge 97606