ISO 7042 Self-Locking Hexagon Nut

ISO 7042 self-locking hexagon nut has metric thread, standard and non-standard. It is used to create fastening joints together with screws, bolts, studs with matching thread pitch. A characteristic feature of the nut is the chamfered edges. Washer installation is not required, which reduces material consumption per joint.

Materials and their effect on technical characteristics

ISO 7042 self-locking hexagon nuts are made from the following materials:

• carbon steel with property class 4 and above; products may have an anti-corrosion zinc coating;
• brass;
• austenitic steel grade A2 — increased corrosion resistance;
• stainless steel A4 — resistant to moisture, most acids, alkalis, salt compounds.

The chemical composition of the raw material and the chamfered sides provide a reliable connection with threaded fasteners. Such a joint withstands significant mechanical loads and holds the fastened parts in a fixed position without shifting.

Design features and application

The design of the ISO 7042 nut is distinguished by chamfered sides in the upper part and a locking ring. These elements allow the nut to be used without washers: it independently holds the parts and prevents spontaneous loosening of the joint.

The self-locking hexagon nut is used in industry, heavy and light machine building, in the automotive industry, and in the manufacture of instruments, machine tools and units.

Fasteners from FLOK

FLOK supplies certified products from leading manufacturers. If required, we complete the order with threaded fasteners of matching grades.