IRAM 5078-1956
Long spiral drill bit with square connecting rod

Standard No.

IRAM 5078-1956

Release Date

1956

Published By

AR-IRAM

Latest

IRAM 5078-1956

Scope

Bl This standard establishes the dimensions, Rockwell C hardness and chemical composition of square shank twist drills, long series.

IRAM 5078-1956 history

• 1956 IRAM 5078-1956 Long spiral drill bit with square connecting rod