Jobber Cobalt Heavy DutyStyles: 1603, 1802 135° Split HelixRegular21° to 34° H N Cobalt ASMEB94.11M P S K StraightShank StrawOxide Note Designed to drill tough, high-tensile materials and work-hardening materials like high- strength alloy steels, stainless steel, titanium, manganese steel, armor plate, and inconel. For Reduced Shank see Style #1812. Style 1891 (Metric) now combined with style 1802. order number drill diameter decimal overall flute 1603 1802 frac/wire/let mm equivalent length length Straw Oxide Straw Oxide *1.00.03943412—C18900 *60.04001-5/811/16C68460C23374 *59.04101-5/811/16C68459C23375 *58.04201-5/811/16C68458C23376 *57.04301-3/43/4C68457C23377 *56.04651-3/43/4C68456C23378 *1.20.04723816—C18902 *55.05201-7/87/8C68455C23379 *54.05501-7/87/8C68454C23380 *1.50.05914018—C18905 *53.05951-7/87/8C68453C23381 1/16.06251-7/87/8C68344C23345 1.60.06304320—C18906 52.06351-7/87/8C68452C23382 51.067021C68451C23383 50.070021C68450C23384 49.073021C68449C23385 48.076021C68448C23386 5/64.078121C68345C23346 47.078521C68447C23387 2.00.07874924—C18910 46.08102-1/81-1/8C68446C23388 45.08202-1/81-1/8C68445C23389 44.08602-1/81-1/8C68444C23390 43.08902-1/41-1/4C68443C23391 42.09352-1/41-1/4C68442C23392 3/32.09382-1/41-1/4C68346C23347 2.40.09455730—C18914 41.09602-3/81-3/8C68441C23393 40.09802-3/81-3/8C68440C23394 2.50.09845730—C18915 39.09952-3/81-3/8C68439C23395 38.10152-1/21-7/16C68438C23396 37.10402-1/21-7/16C68437C23397 36.10652-1/21-7/16C68436C23398 7/64.10942-5/81-1/2C68347C23348 35.11002-5/81-1/2C68435C23399 2.80.11026133—C18918 34.11102-5/81-1/2C68434C23400 33.11302-5/81-1/2C68433C23401 32.11602-3/41-5/8C68432C23402 3.00.11816133—C18920 31.12002-3/41-5/8C68431C23403 3.10.12206536—C18921 1/8.12502-3/41-5/8C68351C23349 3.20.12606536—C18922 continued on next page *Not split point.
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