{"Overall Length - Inch (L)":["3.0625","3.25","3.375","3.5","4.125","5","5.625","6.125","6.375"],"Number of Flutes":"4","Diameter - Inch (D)":["0.125","0.1875","0.25","0.3125","0.375","0.5","0.625","0.75","0.875","1"],"Diameter - Fractional Size (D)":["1/8","3/16","1/4","5/16","3/8","1/2","5/8","3/4","7/8","1"],"Length of Cut - Inch (Lc)":["0.375","0.5","0.625","0.75","1","1.375","1.625","1.875"],"Helix Angle - Degree":"30","Shank Diameter - Inch (d)":["0.375","0.5","0.625","0.75","0.875","1"],"Product Overview":"4 Flute, HSS-Co, Regular Length","Web Literature 4":"800388CA","Stainless Steels : 300":"M; Good","Substrate":"HSS-CO","Web Literature 1":"8002024CA-EM,187|8002024CA-EMT,76","Brand":"OSG","Notes":"Other coatings available upon request.","Surface Treatment":"BRIGHT","Alloy Steels : 4140; 4340":"P; Best","Units":"Inch","Die Steels":"P; Best","Hardened Steels : 35 HRC":"H; Good","High Carbon Steel : 1065":"P; Best","Hardened Steels : 35-45 HRC":"H; Good","Cutting Type":"Center Cutting","Cast Iron":"K; Good","Low Carbon Steel : 1010; 1018":"P; Best","List Name":"COBALT HSS DOUBLE END SQ","Medium Carbon Steel : 1035; 1045":"P; Best","Mill Type":"Double End","Full Description":"High Performance Cobalt HSS End Mills for General Milling Applications","Short Description":"High Performance Cobalt HSS End Mills for General Milling Applications","Stainless Steels : 17-4PH":"M; Good","View Speed and Feed Page":"Here","View Catalog Page":"Here","Aluminum : 6061; 7075":"N; Good","Stainless Steels : 400":"M; Good","Aluminum : Casting":"N; Good","Coolant Thru":"No","Weldon Flat":"Yes","End Cut Type":"Square End","Length of Cut - Specification":["REGULAR","STUB"],"Cutting Direction":"RH","Helix Direction":"RH","Cutting Diameter Tolerance - Inch":["+0 / -0.0011","-0.0004 / -0.0015"],"Titanium : 6AL4V (30HRC)":"S; Good","Diameter-Sizes":"1/8\" - 1\"","Flute-Sizes":"-","Neck-Sizes":"-","Taper-Sizes":"-","Overall-Sizes":"3.0625\" - 6.375\"","Shank-Sizes":"0.375\" - 1\"","Images":["https://res.cloudinary.com/osg-usa-inc/image/upload/f_jpg,q_auto//Products%2FMilling%2FSolid%2FSquare%20End%2FList%20543/End_Mills_-_End_Mill_-_Double_End_Mills_-_List_543_-_Catalog"],"Friendly Name":"543"}