sleeve nut (slevnut)
The Century Dictionary and Cyclopedia · 1897 · p. 52
A double nut which has right-hand and left-hand threads for attaching the joint-ends of rods or tubes; a union. Е. Н. Knight. IMG:content-1278.png:[blocks in formation] a, a ', rods or pipes to be joined, a having a right-hand screw and a ' a left-hand screw, to which screws the right and left sleeve-nut b is fitted.
Readham'da tam maddeyi gor →