What is the name of the tapered key that fits into a keyway on the hub and lies flat against the shaft?

Machine Design MCQs for PPSC, FPSC, NTS, and Pakistan government job tests. Select an option below, then read the explanation.

PPSCFPSCNTSPakistan govt jobs
Subject
Machine Designmechanical-engineering-mcqs › machine-design
Published
26 Jan 2019
Last updated
28 May 2026

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Explanation

A tapered key that fits into the hub's keyway and rests flat on the shaft is called a flat saddle key. Other types include the Woodruff key, feather key, gib-head key, and hollow saddle key, each with distinct shapes and applications.

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