Formerly Emhart Teknologies & Infastech


Speed fasteners which provide consistent controlled clamp, ideal for soft or brittle materials.

The Avdel Chobert speed fastener has been an important part of Avdel since the 1930's when it was used in the renowned Spitfire. The Chobert Speed Fastening® system provides consistent controlled clamp, ideal for soft or brittle materials. The light clamp of the Chobert rivet makes it ideal for use as a pivot pin or hose tail.

Key features and benefits

  • Internally tapered bore ensures consistent light clamp to reduce potential damage to soft or brittle materials
  • Expands radially during installation to ensure maximum hole fill
  • Lower in-place costs than welding or nail rivets
  • Ideal pivot pin or hose tail
  • Hot tin dipped brass option for ease of soldering and good electrical continuity
  • Placed using a unique repetition mandrel system for high speed assembly
  • Can be bowl fed for larger volume applications using automated equipment

Assembly applications

  • Automotive
  • Electronic components
  • Sheet metal
  • Electrical engineering
  • Injection moulded components
  • Switchgear
  • Domestic appliances
  • General sheet metal
  • General light fabrication


  • Sizes: 2.4mm to 6.4mm (3/32" to ¼")
  • Materials: Aluminium alloy, steel and brass
  • Headform: Dome/mushroom and countersunk
Chobert - Series
Material Headform Series
Aluminum Alloy Dome
120° Countersunk
Low profile

Chobert 1125/31/35/64
Chobert 1124/32/36
Chobert 1162

Steel Dome
120° Countersunk
Chobert 1121
Chobert 1122
- electro tin plated*
- nickel plated
Chobert 1141
Chobert 1142
Chobert 1143
Chobert 1144
Chobert 1147
Chobert 1148

* Avdel recommends tin plated Chobert fasteners are installed within nine months from the date they were produced.

Surface finish options
If you are looking for other surface finish options than shown in the above datasheets please download our
> Surface Finishes and Fastener Matrix for Speed Fastening Systems
This will show you what surface finish options are possible to apply to our standard fastener types as "customer specials".

Customised Designs
We can design and manufacture breakstem fasteners with a wide variety of forms and finishes to meet your unique assembly requirements. Please refer to this page to find examples of our customised capabilities:

> Speed Fastener - Customised Designs

Installation Equipment
Speed Fastener Installation Equipment can be found at the following page

> Speed Fasteners Installation Equipment

To select the suitable combination of Chobert nose equipment, mandrel and follower spring to equip the installation tool please refer to the Speed Fastening Systems catalog or the tool manuals.