Coupling nut
A coupling nut, also known as extension nut, is a
engagement
; and coupling nuts with left-handed threads.
Coupling nuts can be used to tighten a rod assembly inward or to press a rod assembly outward.[4][5]
Along with bolts or studs, coupling nuts are also often used to make homemade bearing and seal pullers/presses. The advantage of a connecting nut over a standard nut in this application is that, due to its length, a greater number of threads are engaged with the bolt.[6] This helps to spread the force over a larger number of threads, which reduces the possibility of stripping or galling the threads under a heavy load.
References
- ^ "Coupling Nuts". About Nuts, Materials, and Finishes. McMaster-Carr. Retrieved 26 March 2013.
- ^ "Extension Nut / Coupling Nut". KisanEngineers.com. Kisan Engineers Machine Tools. Archived from the original on 27 December 2011. Retrieved 26 March 2013.
- ^ American Railway Master Mechanics' Association (1922). Locomotive Cyclopedia of American Practice (sixth ed.). New York: Simmons-Boardman. p. 32.
- ISBN 978-0-87851-150-1.
- ^ Olin, L.; Stanland, A.; Allard, F. (1987). "Fiber Optic Hull Penetrators for Submarines". In O'Donnell-Leach, Karen (ed.). Military Applications of Fiber Optics. Fiber Optics Reprint Series Volume 14. Brighton, Massachusetts: Information Gatekeepers Inc. pp. 58–63, page 61.
- ^ "The Use of Two Nuts to Prevent Self Loosening of Fasteners". www.boltscience.com. Retrieved 2024-01-17.