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Hex washer head. 5/16-18 x 0.625
Size: 8-18ab x 0.5 inch.
A replacement union hex nut that secures a refrigerator water line or tubing to a mating valve or fitting, restoring a tight, leak-free connection. Simple, serviceable fastener used on water and refrigeration line unions. What it does
This ratchet-style fastener secures replaceable panels or components, keeping parts locked in place to prevent loosening and maintain proper alignment. Use it to restore secure fastening and reduce vibration or rattling. What it does:
No.12 - 24 x .63 hex head