{"Overall Length - Inch (L)":["3","3.5","3.75","4","4.5"],"Major Diameter - Inch":["0.0625","0.125","0.25","0.375","0.5","1"],"Number of Flutes":["4","5","6"],"Threads Per Inch":["27","18","14","11.5"],"Shank Diameter - Inch (d)":["0.25","0.313","0.5","0.625","0.75"],"Length of Cut - Inch (Lc)":["0.593","0.889","1.143","1.391"],"Thread Length - Inch (Lc)":["0.593","0.889","1.143","1.391"],"Coolant Thru":"No","Brand":"A Brand","Cutting Direction":"RH","List Name":"AT-1 NPS","Meets 4H Class of Fit":"No","Interrupted Thread":"No","Meets 6H Class of Fit":"No","Helix Direction":"RH","Meets 2B Class of Fit":"No","Thread Size - Inch":["1/16","1/8","1/4","3/8","1/2","1"],"Meets 3B Class of Fit":"No","Units":"Inch","Product Category":"Thread Mills","STI Thread":"No","Surface Treatment":"EgiAs","Thread Type":"NPS","Substrate":"Carbide","View Catalog Page":"Here","View Speed and Feed Page":"Here","Web Literature 2":"80061CA-V3","Alloy Steels : 4140; 4340":"P; Best","Aluminum : 6061; 7075":"N; Best","Aluminum : Casting":"N; Best","Benefit 1":"for reduced vibration","Benefit 2":"increases tool stability","Benefit 3":"for exceptional wear resistance","Benefit 4":"for high wear resistance and toughness","Cast Iron":"K; Best","Diameter - Inch (D)":["0.223","0.302","0.381","0.459","0.617","0.737"],"Feature 1":"Unequal Spacing and Variable Lead Flute","Feature 2":"Right-Hand Cut and Left-Hand Helix Geometry","Feature 3":"EgiAs Coating","Feature 4":"Ultra-Fine Grain Carbide","Full Description":"The A Brand AT-1 threadmill is designed with a left-hand helix for a small pitch diameter difference between the hole entry and the bottom of the hole, allowing a delay in gauge-out failure. Longer tool life can be achieved with elimination of “zero cutting” for correcting bending.","Hardened Steels : 35 HRC":"H; Best","Hardened Steels : 35-45 HRC":"H; Best","Helix Angle - Degree":"11","High Carbon Steel : 1065":"P; Best","Low Carbon Steel : 1010; 1018":"P; Best","Medium Carbon Steel : 1035; 1045":"P; Best","Neck Length - Inch (L1)":["0.667","1"],"Product Overview":"AT-1, NPS","Shank Tolerance":"h6","Short Description":"Advanced Performance One Pass Thread Mill","Stainless Steels : 17-4PH":"M; Good","Stainless Steels : 300":"M; Best","Stainless Steels : 400":"M; Good","Type":["2","1"],"Diameter-Sizes":"0.223\" - 0.737\"","Flute-Sizes":"-","Neck-Sizes":"0.667\" - 1\"","Taper-Sizes":"-","Overall-Sizes":"3\" - 4.5\"","Shank-Sizes":"0.25\" - 0.75\"","Images":["https://res.cloudinary.com/osg-usa-inc/image/upload/f_jpg,q_auto//Products%2FThreading%2FStyle%2FThread%20Mills%2FList%2016632/Taps_-_Thread_Mill_-_A_Brand_AT-1_-_List_16632_-_Catalog","https://res.cloudinary.com/osg-usa-inc/image/upload/f_jpg,q_auto//Products%2FThreading%2FStyle%2FThread%20Mills%2FList%2016632/Taps_-_Thread_Mill_-_A_Brand_AT-1_-_List_16632_-_Angle"],"Friendly Name":"16632"}