Turning Insert Selection Reference Guide Tool Step 2 • Select Application and Clamping System External Machining D-Style P-Style Negative S-Style Positive Clamping Clamping C-Style Clamping Clamping C-Style Clamping C Rhomboid80° C8–C10 C20–C22 C31–C32 C42–C43 – conventional D Rhomboid55° C11 C23–C24 C32–C33 C43–C42 – R Round conventional C12 – C35 – C40–C41 S Square90° conventional C12–C14 C25–C27 C36–C37 C45 – T Triangular60° conventional C15 C28–C29 C37–C39 C46–C47 – V Rhomboid35° conventional C16–C17 – – C48 – Trigon W 80°with enlarged conventional C19 C30 – C48–C49 – corner angles Internal Machining D-Style P-Style Negative S-Style Positive Clamping Clamping C-Style Clamping Clamping C-Style Clamping C Rhomboid80° C56 C60 C62 C66–C70 – conventional D Rhomboid55° C56–C57 – C63 C71–C76 – R Round conventional – – – – – S Square90° conventional – – C63–C64 – – T Triangular60° conventional C58 C60 – C77–C80 C65 V Rhomboid35° conventional C58 – – C80–C81 – Trigon W 80°with enlarged conventional C59 C61 C64 – – corner angles widia.com A7