Nuts & bolts

Nuts & bolts

Engineering science related to nuts, bolts, threaded fasteners and tightening techniques.

Industry: Machine tools

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Nuts & bolts

zinc electroplating

Machine tools; Nuts & bolts

Zinc electroplating is a common way to protect threaded fasteners from the effects of corrosion. Zinc electroplating can be completed in acid chloride, alkaline or cyanide baths. Supplemental ...

anti-friction coating aerotight nut

Machine tools; Nuts & bolts

AF coatings are dry lubricants consisting of suspensions of solid lubricants, such as graphite, PTFE or molydbenum disulphide of small particle size in a binder. Such coatings can be applied to ...

A hydraulic tool used to tighten a fastener by stretching it rather than applying a large torque to the nut. After the fastener has been stretched, the nut is run down the thread to snug up with the ...

torque

Machine tools; Nuts & bolts

A rotational moment; it is a measure of how much twisting is applied to a fastener. The units used to measure torque are in the form of force times length. Usually measured in newton-meters (Nm) if ...

fundamental deviation

Machine tools; Nuts & bolts

An intentional clearance between internal or external thread and the design form of the thread when the thread form is on it's maximum metal condition. For metric threads the fundamental deviation ...

passivate

Machine tools; Nuts & bolts

Surface treatment to neutralize stainless steels as an aid in resisting corrosion. An oxidizing solution is used.

unified national (UNR)

Machine tools; Nuts & bolts

UN thread form with a rounded root contour, applies only to external threads. (The UN thread form has a flat, or optionally, a rounded root contour.) The majority of fasteners with a Unified thread ...