(81) Premium carbide grade provides excellent wear resistance when cutting cast aluminum, bronze, cast and ductile irons, fiberglass, hard plastics and other abrasive materials. Not recommended for soft steels.
Right hand spiral, right hand cut, heavy duty high speed steel body.
2 to 2.5 times faster speed of standard high speed steel yields faster holes with better hole finish.
118° cam relieved point, strong edge, free cutting.
Allow 2.5 x Ø of flute for chip exit up to 1/4” (6.35mm), 2 x Ø up to 7/16” (11.1mm) and 1.5 x Ø over 7/16”.
Shank Ø = cutØ thru 1", Ø's over 1" shank is 1", in Ø and 2.25" in length.
(78) Premium carbide grade provides excellent wear resistance when cutting cast aluminum, bronze, cast and ductile irons, titaniums, fiberglass, hard plastics and non-ferrous metals. Not recommended for soft steels.
135° four facet split point improves true position and is an excellent starting drill for longer coolant fed drills.
2 to 2.5 times faster speed than standard high speed steel with better hole finish.
Right hand spiral, right hand cut, heavy duty high speed steel body.
Allow 2.5 x Ø of flute for chip exit up to 1/4” (6.35mm), 2 x Ø up to 7/16” (11.1mm) and 1.5 x Ø over 7/16”.
Shank Ø = cut Ø thru 1, Ø's over 1", shank is 1", in Ø and 2.25" in length.
(201) Premium carbide grade provides excellent wear resistance when cutting cast aluminum, bronze, cast and ductile irons, fiberglass, hard plastics, other non-ferrous materials. Not recommended for soft steels.
Right hand spiral, right hand cut, heavy duty high speed steel body.
2 to 2.5 times faster speed of standard high speed steel yields faster holes with better hole finish.
118° cam relieved point, strong edge, free cutting.
Tang (automotive) drive available with quick delivery.
For intermediate decimal sizes see grind down range column.
Allow 2.5 x Ø of flute for chip exit up to 1/4” (6.35mm), 2 x Ø up to 7/16” (11.1mm) and 5 x Ø over 7/16”.
(94) Premium carbide grade provides excellent wear resistance when cutting cast aluminum, bronze, cast and ductile irons, titaniums, fiberglass, hard plastics and non-ferrous metals. Not recommended for soft steels.
135° four facet split point improves true position on CNC applications.
2 to 2.5 times faster speed than standard high speed steel with better hole finish.
Tang (automotive) drive available with quick delivery.
Right hand spiral, right hand cut, heavy duty high speed steel bodies.
Allow 2.5 x Ø of flute for chip exit up to 1/4” (6.35mm), 2 x Ø up to 7/16” (11.1mm) and 1.5 x Ø over 7/16”.
(21) Premium carbide grade provides excellent wear resistance when cutting cast aluminum, bronze, cast and ductile irons, fiberglass, hard plastics and non-ferrous materials.
118° cam relieved point, strong edge, free cutting.
2 to 2.5 times faster speed of standard high speed steel yields faster holes with better hole finish.
Right hand spiral, right hand cut, high speed steel body, general purpose construction. (General purpose construction is not suitable for severe drilling applications. Heavy duty construction is priced on application.)
(82) Premium carbide grade provides excellent wear resistance when cutting cast aluminum, bronze, cast and ductile irons, titaniums, graphite, fiberglass, hard plastics and non-ferrous metals. Not recommended for soft steels.
Aircraft extension drills are used principally for the drilling of holes in inaccessible places which cannot be reached with regular length drills.
135° split point per NAS-907-P3 improves accuracy and decreases power consumption.
2 to 2.5 times faster speed than standard high speed steel with better hole finish.
6” overall length, threaded shank adapters and eight facet point available upon request.
Right hand spiral, right hand cut, heavy duty high speed steel bodies.
(53) Extra thick carbide tip, high temperature braze and heavy land construction withstand the heavy feed pressure necessary to penetrate hardened and case hardened steels over 45 Rc/421 Hb.
118° cam relieved notched thinned point decreases the thrust needed to penetrate hard materials.
Straight flute, right hand cut, heavy duty high speed steel body.
20° negative rake and MN notch available for severe application drilling. Priced on request.
Produces reamer like hole finish, accurate hole size and can be used for coring out pre-existing holes.
Also see solid carbide die drill Styles 151 & 155.
(43) Brazed carbide tip on high helix masonry flute is ideal for the economic drilling of carbon, hard plastics, concrete, plaster, wall board, stone, brick and asphalt.
Not recommended where precise hole sizing or close concentricity is required.