See photo before ordering

Note that the process of having them blackened (which requires very high temperatures) made them very yellow and appear to be rotted/brittle. We have tested them and they function as you would expect and should not disintegrate.

1/4"-20 Nylon Insert Hex Head Lock Nuts in Stainless Steel, with a Black Oxide finish, for exterior applications. These are a HEX product, not Square.