General Purpose Solid Carbide End Mills • Roughing/Finishing Catalogue Numbering System How Do Catalogue Numbers Work? Each character in our catalogue number signifies a specific trait of that product. Use the following key columns and corresponding images to easily identify which attributes apply. 40040800T020 4004 0800 T 020 List Diameter Shank Ap1 max mm Style mm D002 = 2FL Chamfer DIN 6527 — Short T = Plain Shank D012 = 2FL Chamfer DIN 6527 — Long W = Weldon® Shank 2819 = 2FL Chamfer DIN 6528 4002 = 2FL Chamfer Factory Standard — Short/Regular 4012 = 2FL Chamfer Factory Standard — Long 4022 = 2FL Chamfer Factory Standard — Extra Long D001 = 2FL Ball Nose DIN 6527 Short D011 = 2FL Ball Nose DIN 6527 Long 2838 = 2FL Ball Nose DIN 6528 4001 = 2FL Ball Nose Factory Standard — Short/Regular 4011 = 2FL Ball Nose Factory Standard — Long 4021 = 2FL Ball Nose Factory Standard — Extra Long D004 = 4FL Chamfer DIN 6527 — Short D014 = 4FL Chamfer DIN 6527 — Long 2528 = 4FL Chamfer DIN 6528 4004 = 4FL Chamfer Factory Standard — Short/Regular 4014 = 4FL Chamfer Factory Standard — Long 4024 = 4FL Chamfer Factory Standard — Extra Long D000 = 4FL Ball Nose DIN 6527 — Short D010 = 4FL Ball Nose DIN 6527 — Long P44 widia.com