Lock-nut
Illustrated Marine Encyclopedia · 1890 · p. 14
A nut placed outside a main-nut, to prevent it starting.
Bu kavram başka kaynaklarda da geçiyor
Lock Nut
—
A Dictionary of Military Terms (1918)
Lock Nut
—
Hawkins' Electrical Dictionary (1915)
Lock Nut
—
Chandler's Encyclopedia (1898)
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