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Rivet Nut Flanged Full Hex Closed End

Rivet Nut Flanged Full Hex Closed End, commonly known as Rivnuts, Blind Nuts and Nutserts®, are an internally threaded insert often used where the thickness of the application is too small to tap a standard thread. The use of these rivet nuts creates a strong thread in thin sheets of material for high strength fastening from bolts and other threaded articles.

The full countersunk head is often chosen over a reduced countersunk type due to its stronger head. It is also deeper, meaning it can only be used in material thicknesses greater than 1.5mm – offering a flush, finished appearance to the application.

The presence of the knurled body on the rivet nut provides greater resistance to movement within the application than knurling under the head, especially when installed in softer materials, whilst the closed-end blocks any form of contamination to the component. This also prevents the use of screws that are too long for the application.

Installing these rivet nuts requires the use of a special tool with a threaded stud which engages the internal threads of the rivet nut and pulls upwards, in turn deforming the unthreaded section of the rivet nut to expand under the reverse side of the material, providing a high strength permanent thread in thin sheet material.

Rivet Nut Flanged Full Hex Closed End are available in diameters of M4 to M10 to suit various grip ranges.

Materials and finishes available include Zinc Plated Steel, A2 Stainless Steel and A4 Stainless Steel, and Aluminium.

Non-standard sizes and materials are available to order as specials, including small volume manufacture, modifications and bespoke parts made to drawings. Minimum order quantities apply.

Rivet nut flanged full hex closed end

Metric Technical Data & Availability
Grip Range
GR (mm)
A/F (mm)

+0.1 / -0.0
A/F (mm)
Head Diameter
DK (mm)
Head Thickness
K (mm)
L (mm)
M4 0.5 – 2.0 6.1 6.0 9.0 1.0 16.0 yellow icon image
M5 0.5 – 3.0 7.1 7.0 10.0 1.0 20.0 yellow icon image
M6 0.5 – 3.0 9.1 9.0 13.0 1.5 23.0 yellow icon image
M8 0.5 – 3.0 11.1 11.0 16.0 1.5 26.0 yellow icon image
M8 3.0 – 5.5 11.1 11.0 16.0 1.5 28.5 yellow icon image
M10 0.8 – 3.5 13.1 13.0 19.0 2.0 33.0
yellow icon image = Steel Zinc
Size not listed? Please make an enquiry – we may be able to provide it.

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