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Hex Coupling Nut (Long Nut) 1/2×11/2 MS UNF EG
A coupling nut, or extension nut, is a long, internally threaded fastener designed to join two male threads—most commonly threaded rods—or extend pipe lengths. Typically featuring a hexagonal exterior for wrench tightening, they are used to connect, hang, or extend components in high-stress applications.
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See Also...
Castle Nuts M12 EN8 PLN 935
Castle Nuts M24x1.5 EN8 MF EG 935
Hex Half Lock Nut M12 MS PLN
Hex Half Lock Nut M6 A4 SS 316
Hex Head Nut 3/8 5.6 UNF PLN