Mechanics Length Heavy DutyStyles: 1620, 1875R, 1875L BlackGold FlattedShank 135° Split HSS ASMEB94.11M HelixRegular21° to 34° P K Note Three flats on sizes above 11/64" for tighter chucking. For Reduced Shank see Style #1876. Spiral Black and Gold Style #1875L, Left-Hand Spiral Black and Gold order number drill decimal overall flute 1620 1875R 1875L diameter equivalent length length Black & Gold Black & Gold Black & Gold *1/16.06251-7/87/8C68462C23830C23701 *5/64.078121C68463C23831 — *3/32.09382-1/41-1/4C68464C23832 — *7/64.10942-3/81-5/16C68465C23833 — *1/8.12502-1/21-7/16C68466C23834C23702 *9/64.14062-5/81-9/16C68467C23835 — *5/32.15622-3/41-11/16C68468C23836 — *11/64.17192-7/81-13/16C68469C23837 — 3/16.187531-7/8C68470C23838C23703 13/64.20313-1/81-15/16C68471C23839 — 7/32.21883-1/42C68472C23840 — 15/64.23443-3/82-1/16C68473C23841 — 1/4.25003-1/22C68474C23842C23704 17/64.26563-5/82-1/8C68475C23843 — 9/32.28123-3/42-1/4C68476C23844 — 19/64.29693-7/82-3/8C68477C23845 — 5/16.312542-1/2C68478C23846C23706 21/64.32814-1/162-9/16C68479C23847 — 11/32.34384-1/82-5/8C68480C23848 — 23/64.35944-3/162-11/16C68481C23849 — 3/8.37504-1/42-11/16C68482C23850C23707 **25/64.39064-5/162-3/4C68483C23851 — **13/32.40624-3/82-13/16C68484C23852 — 27/64.42194-7/162-7/8C68485C23853 — 7/16.43754-1/22-15/16C68486C23854C23708 29/64.45314-5/83C68487C23855 — 15/32.46884-3/43-1/8C68488C23856 — 31/64.48444-7/83-1/4C68489C23857 — 1/2.500053-3/8C68490C23859C23709 *No flats on shank. **Style #1875 sizes 25/64" and 13/32" drills with flats will fit in 3/8" shank drill chucks without having reduced shanks.
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