{"Images":["https://res.cloudinary.com/osg-usa-inc/image/upload/f_jpg,q_auto//Products%2FMilling%2FSolid%2FSquare%20End%2FList%20420/End_Mills_-_End_Mill_-_Roughing_Cut_-_List_420_-_Roughing_End_Mills_-_Catalog"],"Number of Flutes":["3","4","6"],"Diameter - Inch (D)":["0.25","0.375","0.5","0.625","0.75","0.875","1","1.25","1.5"],"Diameter - Fractional Size (D)":["1/4","3/8","1/2","5/8","3/4","7/8","1","1-1/4","1-1/2"],"Helix Angle - Degree":"25","Length of Cut - Inch (Lc)":["0.25","0.375","0.5","0.625","0.75","0.875","1","1.25"],"Overall Length - Inch (L)":["2.0625","2.15625","2.5","2.75","2.875","3.125","3.5","3.75"],"Shank Diameter - Inch (d)":["0.375","0.5","0.625","0.75","1","1.25"],"Web Literature 4":"800388CA","Substrate":"HSS-CO","Stainless Steels : 400":"M; Good","Web Literature 1":"8002024CA-EM,176|8002024CA-EMT,85","Notes":"Other coatings available upon request.","Surface Treatment":"BRIGHT","Units":"Inch","Hardened Steels : 35 HRC":"H; Good","Hardened Steels : 35-45 HRC":"H; Good","Cutting Type":"Center Cutting","Cast Iron":"K; Good","List Name":"COBALT HSS ROUGHER SQ","Full Description":"Cobalt-HSS Roughing Cut End Mills for Ferrous and Non-Ferrous Materials","Short Description":"Cobalt-HSS Roughing Cut End Mills for Ferrous and Non-Ferrous Materials","Alloy Steels : 4140; 4340":"P; Good","Stainless Steels : 300":"M; Best","Die Steels":"P; Good","High Carbon Steel : 1065":"P; Good","Stainless Steels : 17-4PH":"M; Good","Low Carbon Steel : 1010; 1018":"P; Good","View Speed and Feed Page":"Here","View Catalog Page":"Here","Aluminum : Casting":"N; Good","Product Overview":"Multiple Flute, HSS-Co, Fine Pitch, Stub, Roughing Cut","Coolant Thru":"No","Medium Carbon Steel : 1035; 1045":"P; Good","Weldon Flat":"Yes","Mill Type":"Single End","End Cut Type":"Square End","Cutting Direction":"RH","Length of Cut - Specification":"STUB","Helix Direction":"RH","Type (feature)":"Roughing, Fine Pitch","Titanium : 6AL4V (30HRC)":"S; Good","Diameter-Sizes":"1/4\" - 1.5\"","Flute-Sizes":"-","Neck-Sizes":"-","Taper-Sizes":"-","Overall-Sizes":"2.0625\" - 3.75\"","Shank-Sizes":"0.375\" - 1.25\"","Friendly Name":"420","CategoryBrand":"OSG"}