Header fastener image

Security Fasteners and General Fixings from Stock and to order

Click Now for a Quote

Call +44(0) 1902 457734

Twitter Icon Facebook Icon LinkedIn Icon Skype Icon

Rivet Nut Reduced Countersunk Knurled Closed End

SKU: RN13 Categories: ,

Reduced countersunk (thin sheet) rivet nuts with a knurled body closed end are available in diameters from M4 to M10 to suit various grip ranges.
Materials and finishes available include steel zinc plate, A2 stainless steel, A4 stainless steel and aluminium. Other materials, sizes and bespoke requirements can be manufactured to order.
Rivet nut reduced countersunk knurled closed end

Rivet Nut Reduced Countersunk Knurled Body Closed End
THREAD Grip Range (GR)
Hole Dia (D)
+0.1/-0.0
Body Dia Head Dia (DK)
Head Thickness (K) Length (L)
M4 0.5 – 2.0 6.0 5.9
7.0 0.5 15.0
M5 0.5 – 2.5
7.0 6.9 8.0 0.5 16.5
M6 0.5 – 3.0
9.0 8.9 10.0 0.5 20.5
M8 0.7 – 3.0
11.0 10.9 12.0 0.6 23.0
M10 1.0 – 3.0 13.0 12.9 14.0 0.7 24.5

Reduced countersunk (thin sheet) rivet nuts with a knurled body and closed end are also commonly know as Rivnuts, Blind Nuts, Thin Sheet Nuts and Nutserts.
These rivet nut fasteners are a form of internally threaded insert and are used in applications where the material (wall) thickness is too small to tap a conventional thread, therefore by using rivet nuts a strong thread is created in thin sheets of material for high strength fastening from bolts and other threaded articles.

The closed end style rivet nut is used in applications to reduce corrosion from moisture or contamination, the closed end rivet nut also prevents screws that are too long been used in the application.
The knurled body of the reduced countersunk rivet nut provides increased resistance to turning in the application, especially when installed in softer materials.
The reduced countersunk head also known as thin sheet rivet nuts allows this type of rivet nut to be used in applications without any extra hole preperation, providing a low profile flush fit to the application. Enabling reduced countersunk rivet nuts to be installed in post-painted or pre-coated applications without damaging the surface.

Reduced countersunk (thin sheet) rivet nuts with a knurled body and closed end are installed using a special tool with a threaded stud (nose) that engages with the internal threads of the rivet nut an pulls upwards, in turn deforming the unthreaded section of the rivet nut to expand under the reverse side side of the material, providing a high strength permanent thread in a thin sheet material.