Features: These sets contain high-speed steel taps that provide good wear resistance when creating internal threads in general purpose tapping applications in a range of materials, including ferrous and non-ferrous metals. The sets also contain carbon steel dies, which are an economical choice for external-threading applications in maintenance operations. Number of Pieces / 13 Number Of Taps / 8 Number of Dies in Set / 8 Tap Type / Hand Tap Thread Standard / UNC Thread Limit / H3 Thread Sizes Included / 1/2"-13, 1/4"-20, 3/8"-16, 5/16"-18, 7/16"-14 Threads per Inch / 13, 14, 16, 18, 20 Tap Shank Standard / Table 302 Tap Finish / Bright (Uncoated) Tap Shank Dia. / Table 302 Tap Overall Length / Table 302 Tap Series / HTGP Class of Fit / 2B Coolant Fed / Non-Coolant Through Extended Neck / No Extended Shank / No Extension Tap / No Helix Angle / 0 Degrees Number of Flutes / 4 Die Material / High Speed Steel Die Finish / Bright (Uncoated) Die Type / 2-Piece Die Thread Sizes Included / 1/2"-13, 1/4"-20, 3/8"-16, 5/16"-18, 7/16"-14 Die Series / 0550 Case Type / Metal Features / Self Alignment Primary Material Application / All Materials Primary Material Application ISO Code / H, K, M, N, P, S Secondary Material Application / Stainless Steel Secondary Material Application ISO Code / M 55% Thread Drill Size / #3, 11.30mm, 8.40mm, I, W 65% Thread Drill Size / #5, 11.00mm, 17/64 in, P, V 75% Thread Drill Size / #7, 27/64 in, 5/16 in, F, U Die Material Grade / Carbon Steel Dimensions Standard / Fractional Inch Finish - Machining / Bright (Uncoated) Material - Machining / High Speed Steel Max. Die Thread Size / 1/2"-13 Max. Tap Thread Size / 1/2"-13 Measurement System / Fractional Inch Min. Bore Dia. / 1/4 in -20 NC Min. Tap Thread Size / 1/4"-20 Powdered Metal Base Material / No Spiral Direction / Neutral Tap Material Grade / M2 Tap Sizes Included / 1/2"-13, 1/4"-20, 3/8"-16, 5/16"-18, 7/16"-14 Standards / ANSI Tap Chamfer / Plug Tap Material / High Speed Steel Tap Wrench Number / #5 Thread Direction / Right Hand Thread Type / NC