{"Overall Length - Inch (L)":["3.25","4","3.75","4.625","3.875","5.25","4.125","2.5","2.625","4.25","4.5","6.5","5.5","6.75","7.75"],"Number of Flutes":["4","5","6","8"],"Shank Diameter - Inch (d)":["0.5","0.625","0.75","0.375","1","1.25","2"],"Diameter - Fractional Size (D)":["1/2","5/8","3/4","7/8","1/4","5/16","3/8","1","1-1/4","1-1/2","2"],"Diameter - Inch (D)":["0.5","0.625","0.75","0.875","0.25","0.3125","0.375","1","1.25","1.5","2"],"Length of Cut - Inch (Lc)":["1.25","2","1.625","2.5","3","1.875","0.75","0.875","1.5","4"],"Helix Angle - Degree":"30","Product Overview":"4 Flute, Regular Length, Center Cutting (for 1/8 and larger) TiN, Roughing Cut","Stainless Steels : 17-4PH":"M; Good","Web Literature 4":"800388CA","Substrate":"HSSE","Web Literature 1":"8002024CA-EM,150|8002024CA-EMT,79","Brand":"EXOTIN","List Name":"EXO-TIN-EX-REE","Hardened Steels : 35 HRC":"H; Best","Units":"Inch","Hardened Steels : 35-45 HRC":"H; Good","Cast Iron":"K; Good","Stainless Steels : 300":"M; Best","Alloy Steels : 4140; 4340":"P; Good","Stainless Steels : 400":"M; Best","Die Steels":"P; Good","High Carbon Steel : 1065":"P; Good","Low Carbon Steel : 1010; 1018":"P; Good","View Speed and Feed Page":"Here","View Catalog Page":"Here","Aluminum : 6061; 7075":"N; Good","Aluminum : Casting":"N; Good","Coolant Thru":"No","Cutting Type":"Non-Center Cutting","Medium Carbon Steel : 1035; 1045":"P; Good","Weldon Flat":"Yes","Mill Type":"Single End","Full Description":"Premium Powdered Metal Roughing End Mills for Difficult to Machine Materials","Short Description":"Premium Powdered Metal Roughing End Mills for Difficult to Machine Materials","End Cut Type":"Square End","Length of Cut - Specification":["REGULAR","LONG","STUB"],"Cutting Direction":"RH","Surface Treatment":"TiN","Helix Direction":"RH","Type (feature)":"Roughing","Titanium : 6AL4V (30HRC)":"S; Good","Diameter-Sizes":"1/4\" - 2\"","Flute-Sizes":"-","Neck-Sizes":"-","Taper-Sizes":"-","Overall-Sizes":"2.5\" - 7.75\"","Shank-Sizes":"0.375\" - 2\"","Images":["https://res.cloudinary.com/osg-usa-inc/image/upload/f_jpg,q_auto//Products%2FMilling%2FSolid%2FSquare%20End%2FList%20690/End_Mills_-_End_Mill_-_EXOTIN_Roughing_-_List_690_-_Roughing_End_Mills_-_Catalog"],"Friendly Name":"690"}