BS S ROTATING TOOL INSERTS Inch Diameter of Metric Inscribed E Circle Round (inch) .250 06 06 11 F Sharp .313 08 07 13 3 3 .375 09 09 16 .394 T .394 10 Chamfer .472 12 Inch Thickness(inch)Metric S 4 4 .500 12 12 22 2.5 .156 T3 Chamfer+Hone 5 .625 16 15 27 2 .125 03 Z .787 20 3 .187 04 Chamfer b Insert Size n Insert Thickness . Cutting Edge Condition m Cutting Edge Angle , Wiper Edge Relief Angle / Cutting Direction u12 Chip Breaker L Left Symbol Name KRINS AS N Neutral FT FT Breaker R Right HS HS Breaker A 45° D 15° JH JH Breaker E 75° E 20° JM JM Breaker K P 90° F 25° 11 Width of Wiper Edge JP JP Breaker Z Other Angle G 30° JS JS Breaker LS LS Breaker MM MM Breaker 1 .055 MS MS Breaker 2 .094 K003