Coupling nuts or extension nuts Fasteners are hex shaped and used to combine two studs. In order to lengthen bolts, these nuts are coupled together. Ensure to use a wrench to hold the threaded fastener in place. The nuts come with a small hole on its side to give you a visual idea about how closely or tightly the screws are coupled. The primary application of extension nuts is to increase the size of small rods. It can tighten the rod assembly by providing an inward pressure using industrial tools. The same holds for loosening the assembly for which outward pressure is exerted.
Stainless Steel
DIN 6334 D L S M6 25 10 M8 25 11 M10 30 13 M12 40 17 M16 40 24 M20 50
30
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