betvlctor伟德国际

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                Contact Us
                Hammond & Company Ltd
                Finway Road
                Hemel Hempstead
                Hertfordshire
                HP2 7PT
                England
                +44 (0)1442 212 211
                +44 (0)1442 252 003
                Send a Message
                We'll respond within 48 business hours

                Drill Part Number System


                Diagram

                Field 1 Drill Type


                G Gun drill
                E? Gun reamer
                F? Speedfeed
                S? Speedbit
                V? Ventec
                P? Proten
                X? Special

                Field 2 Standard or Coated


                M? Standard metric
                C ? Coated metric
                I? Standard imperial
                K ? Coated imperial

                Field 3-7 Diameter


                Decimal point between fields 4 & 5, size to 3 decimal places

                Fields 8 Contour (Gun drills only. All other drills are A)


                A - C1? Standard
                C - C2? Grey Cast Iron
                D - C3? Gun boring
                E - C4? Crankshafts, Aluminium > dia ? 4.0
                X - Special

                Fields 9-12 Length (No decimal point)


                Gun Drills - Overall length
                Speedfeed -?Flute length
                Ventec?- Flute length
                Speedbit?- Flute length

                Fields 13&14 Driver Type (See separate list for driver codes)


                ND? No driver
                RT? Re-tip
                RD? Reduction
                RG? Re-grind
                MO? Modification

                Fields 15 Workpiece Material


                A? Steel/Non ferrous/Cast Iron
                H? Grey Cast Iron
                T? Cast Iron (high phosphorus content)
                M? Stainless Steel, High Si content aluminium

                Field 16 Nose Grinds


                A? NG6/NG8 Standard
                B? NG4 Aluminium
                E? NG13 Grey Cast Iron
                F? NG73 Stack
                G? NG80 Flat bottom
                H? NG82 Inconel
                J? NG83 Crankshaft
                K? NG86 Wood
                X? Special


                Diagram

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