Here are the Taps on the Shelf at Hill:
*015128 Hill Inventory: 1 Customer Account Required

16UN Solid Carbide ALTIN Coated Thread Mill (.614" Dia x 1.437" LOF x 5/8" Shank) for 3/4-16 and above

+ Quick Shop
*017028 Hill Inventory: 3 Customer Account Required

12UN Solid Carbide ALTIN Coated Thread Mill (.621" Dia x 1-1/2" LOF x 5/8" Shank) for 1"-12UN and above

+ Quick Shop
*015125 Hill Inventory: 1 Customer Account Required

24UN Solid Carbide ALTIN Coated Thread Mill (.228" Dia x .584" LOF x 1/4" Shank) for 5/16-24 and above

+ Quick Shop

*015117 Hill Inventory: 2 Customer Account Required

11.5NPT Solid Carbide ALTIN Coated Thread Mill (.620" Dia x 1.040" LOF x 5/8" Shank) for 1"-2"NPT

+ Quick Shop
008709AS Regal 1/4-18 4 Flt. NPT Taper Pipe Tap + Quick Shop