M4 stainless steel serrated flange nut Flange nuts with washer for 4 mm diameter screws Self-locking hexagonal DIN 6923 / ISO 4161 Stainless steel A2 (V2A / 304) Safety nut

THE LOT: 20 stainless steel M4 notched flange nuts

SIMPLE AND EFFECTIVE: Thanks to its wide base, this nut, also called a collar/flange nut, offers a larger support surface than a standard hexagonal nut. It is an essential fixing element because with it there is no need for a washer, it offers greater resistance to loosening than a standard nut while guaranteeing simple, quick and efficient assembly.

SECURITY AND LOCKING: The notches on the base allow you to lock the nut so that it does not loosen. This durable, high quality nut is simply installed with a 7mm spanner on 4mm diameter screws or threaded rods. Also available in several sizes → M3 / M4 / M5 / M6 / M8 / M10 / M12 / M16.

DOES NOT RUST: A2 - V2A - AISI 304 stainless steel. Unlike zinc-plated or galvanized steel, this INOX nut resists corrosion and does not rust. It is therefore suitable for indoor and outdoor use, even in humid environments. (excluding sea water).