12 Terms
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Nuts & bolts
Engineering science related to nuts, bolts, threaded fasteners and tightening techniques.
Industry: Machine tools
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Nuts & bolts
nominal diameter
Machine tools; Nuts & bolts
The diameter equal to the external diameter of the threads.
fundamental triangle height
Machine tools; Nuts & bolts
The fundamental triangle height is normally designated with the letter H. This is the height of the thread when the profile is extended to a sharp vee form. For 60 degree thread forms such as metric ...
complete thread
Machine tools; Nuts & bolts
The part of the thread having full form at both crest and root. Also, to identify threads which extend full distance of specified fastener thread length.
keps
Machine tools; Nuts & bolts
A pre-assembled nut and washer assembly (the washer is attached to the nut so that it won't fall off)- a trademark of ITW Shakeproof. The origin of the word came from ShaKEProof. The s on the end ...
rolled thread
Machine tools; Nuts & bolts
A thread formed by plastically deforming a blank rather than by cutting. The majority of standard fasteners have their threads formed by rolling. Most threads are rolled before any heat treatment ...
breakaway torque
Machine tools; Nuts & bolts
The torque necessary to put into reverse rotation a bolt that has not been tightened.
internal thread
Machine tools; Nuts & bolts
A screw thread which is formed in holes, such as in nuts.
