Hex flange nut with an integral flange at the base, eliminating the need for a separate washer. Offered in plain flange and serrated (anti-slip) flange forms. Material options are A2 (304) and A4 (316) stainless steel with a bright natural finish (no plating). Dimensioned to GB/T 6177.1-2016 / DIN 6923.

Designed to be used with matching bolts; the serrated flange provides anti-slip engagement on many contact surfaces. Common applications include solar mounting brackets, outdoor steel structures, curtain walls, and vehicles or equipment operating in humid or corrosive conditions. Confirm size, thread and material grade when specifying.