Hobson NFG5YC037 3/8" UNC Serrated Hex Flange Nut, Grade 5, Zinc Yellow Passivate

This page lists 5 sizes of the Hobson UNC serrated hex flange nut: 1/4" to 1/2"; zinc yellow passivate 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.

Hobson's acronym list defines Gr as the imperial grade (strength level) of a screw or nut, for example Grade 2, Grade 5 or Grade 8 (manufacturer-stated). The supplier names these nuts Grade 5. The Hobson guides publish strength tables for bolts, so no nut strength figure is published here.

Hobson's acronym list defines ZY as zinc plating with a yellow chromate topcoat (manufacturer-stated).

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

The threads per inch shown are from the Hobson thread table, which defines TPI as threads per inch, for the sizes the table lists (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: 1/4" to 1/2"
• UNC thread
• Zinc yellow passivate finish
• Grade 5 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 nominal diameters in inches; compare the threads per inch 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 UNF Serrated Hex Flange Nut, Grade 8, Zinc Plated, 3/8" and 1/2", Hobson 1/2" UNC Serrated Hex Flange Nut, Zinc Plated, Box of 100 and Hobson 1/2" UNF Serrated Hex Flange Nut, Grade 8, Plain, Pack of 100.