Hobson NF08GCM08 M8 Metric Serrated Hex Flange Nut, Class 8, Hot Dip Galvanised

This page lists 5 sizes of the Hobson metric serrated hex flange nut: M8 to M20; hot dip galvanised finish. A flange nut has a round flange formed on one end, so the nut bears on a wider face than a plain hex nut.

The supplier names these nuts Class 8. The Hobson guides publish strength tables for bolts, not nuts, so no nut strength figure is published here.

In its assembled kits the Hobson stock list pairs Class 8.8 bolts with Class 8 nuts (manufacturer-stated).

Hobson's acronym list defines HDG as hot dip galvanised (manufacturer-stated).

Hobson's acronym list defines "serrated" as locking serrations on the bearing face of a bolt or nut (manufacturer-stated).

The pitch shown for each size is the coarse pitch from the Hobson thread table (manufacturer-stated).

Pack quantity is shown for each item in the table.

Where this product is used

• Fitting to a bolt or stud where a nut with a built-in flange face is wanted
• Joining parts with a bolt of the same thread form, size and pitch

Features

• 5 sizes: M8 to M20
• Metric thread
• Hot dip galvanised finish
• Class 8 as named by the supplier
• Pack quantity shown for each item

Common specifications

Key specifications

Selecting the right option

Choose the thread form first: the nut and its bolt or stud must match in thread form, diameter and pitch. Sizes are the nominal diameter in millimetres; compare the pitch in the table with your bolt. The Hobson spanner chart does not list this nut style, so the across-flats size is not published here.

Related products

Related nuts: Hobson Metric Serrated Hex Flange Nut, Class 8, Zinc Plated, M6 to M16, Hobson Metric Serrated Hex Flange Nut, Class 8, Zinc Yellow Passivate, M4 to M16 and Hobson M14 Serrated Hex Flange Nut, Class 10, Plain, Pack of 100.