quadruple thread

quadruple thread

[kwə′drüp·əl ′thred]
(design engineering)
A multiple thread having four separate helices equally spaced around the circumference of the threaded member; the lead is equal to four times the pitch of the thread.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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Thread a hand sewing needle with a quadruple thread length.