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cleko
A cleco, also spelled generically cleko, is a fastener developed by the Cleveland Pneumatic Tool Company. Widely used in the manufacture and repair of aluminum-skinned aircraft, it is used to temporarily fasten multiple sheets of material together before the pieces are permanently joined.〔Parker, Dana T. ''Building Victory: Aircraft Manufacturing in the Los Angeles Area in World War II,'' p. 70, Cypress, CA, 2013. ISBN 978-0-9897906-0-4.〕
==Fastener and tool==
The basic type consists of a steel cylinder body, a plunger on the top, a spring, a pair of step-cut locks, and a spreader bar. A special type of pliers are used to push in the spring-loaded plunger. This pushes down on the step-cut locks, which pushes them away from the spreader bars and allows them to come together. This allows the user to slip the locking jaws through a hole made through multiple sheets of material. When the plunger is released the spring pulls the locking jaws back towards the spreader bar, which separates the two jaws. The material sheets are then squeezed in between the step-cut area and the steel cylinder. This keeps the holes in the separate sheets aligned.〔Jeppesen Sanderson, Inc. (2002) "A&P Technician Airframe Textbook", Jeppesen Sanderson〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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