Questions about Drill Bits, Counterbores, and Countersinks: Hand and Machine
What does federal supply class 5133 cover?
Federal supply class 5133 covers drill bits, counterbores, and countersinks. Items filed here are twist drills.
How is a part in federal supply class 5133 identified?
A twist drill is identified by its NSN and item name, and the record carries the characteristics on file and the manufacturer cross-references for that exact drill. Each item in the class has its own National Stock Number (NSN) record, listed above.