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Hammond & Company Ltd
Finway Road
Hemel Hempstead
Hertfordshire
HP2 7PT
England
+44 (0)1442 212211
+44 (0)1442 252003
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We'll respond within 48 business hours

Field 1 Drill Type


Diagram

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)


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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

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Etiam lobortis, est vitae molestie luctus, nulla dolor vulputate ipsum, eu feugiat turpis sem ac lorem. In hac habitasse platea dictumst. Donec lorem elit, ullamcorper a varius a, mattis id ante. Fusce eget est risus. Nunc placerat, nisi quis eleifend sagittis, dolor tortor tincidunt eros, ac scelerisque diam justo nec ipsum. Nullam urna mi, fringilla sit amet. Donec lorem elit, ullamcorper a varius.

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Diagram

Etiam lobortis, est vitae molestie luctus, nulla dolor vulputate ipsum, eu feugiat turpis sem ac lorem. In hac habitasse platea dictumst. Donec lorem elit, ullamcorper a varius a, mattis id ante. Fusce eget est risus. Nunc placerat, nisi quis eleifend sagittis, dolor tortor tincidunt eros, ac scelerisque diam justo nec ipsum. Nullam urna mi, fringilla sit amet. Donec lorem elit, ullamcorper a varius.