Threaded Inserts - Aluminium, Stainless, Nylon
The Threaded Insert (often call Nutsert or Rivnut) is a female thread (nut) used in thin sheetmetal or areas with no access behind the sheet. It is like a blind rivet and has at one end either a flange or a small countersunk/rimless flange, and a portion of plain barrel. It is the plain barrel that can be compressed behind the sheet metal, thereby forming a female threaded nut fitting fixed through the parent sheet metal. Wood Inserts however are different, they have a internal metric thread and an external woodscrew thread to screw into Timber. They do not crimp sheetmetal like Threaded Inserts.
Threaded Insert (Nutsert) Sizing
Anzor carries standard metric thread Threaded Inserts like M4, then followed by the length. Length is denoted in brackets as the thickness range that the insert will pull up on. This has to match the thickness of the sheet-metal you are putting the insert into. This thickness range is often called the ‘draw’ or ‘Grip’ thickness.
Threaded Insert (Nutsert) Materials: Stainless, Aluminium and Nylon
A range of metric (standard coarse) Threaded Inserts from M3 through to M10 is available. The large flat flanged range is called a Flanged Threaded Insert and the smaller countersunk type is called a Rimless Threaded Insert due to its very small top flange. Both styles are available as stainless steel threaded inserts and aluminium threaded inserts. The Flanged style is also available as a Nylon Threaded Insert with a nylon body fitted with an aluminium threaded portion. These are for low loads and no installation tool is required for the Nylon Threaded Insert.
Threaded Insert (Nutsert) applications
Mainly used in sheet metal fabricated products, such as air conditioning ducting, light fittings, electrical distribution boxes. The uses are varied but usually sheet metal. The nylon types are usually employed in electrical situations where no conductivity is desired.
Threaded Insert (Nutsert) advantages
The advantages of using threaded inserts are that they are; easy to use, quick, permanent, and actually increases the strength of the fastening in the sheet metal. However special tools and drilling required tofit the Threaded Insert and care and attention should be taken to ensure the correct use of the tool. Anzor can supply you with an instruction manual. The Insert may rotate after being done up, especially if the fastening seizes in the thread, the use of a lubricant will help to avoid this.
Threaded Inserts have a wide spread use throughout Sheet metal, Electrical and General engineering industries. They are relatively easy to use, but special tools and some training required.
Threaded Insert (Nutsert) Tooling
The ‘Threaded Insert Tool’ that is used can be hand operated or in production cases it is normally air operated.