The Chobert® speed fastener has a renowned history dating back to the 1930's when it was used in the famous World War II Spitfire single-seat fighter planes. With easy installation and lower in-place costs than welding or nail rivet techniques, the Chobert® has remained a highly used speed fastener because it provides a consistent controlled clamp, and is ideal for soft or brittle materials.

Available in various finishes, including the hot-tin-dipped brass option for ease of soldering and good electrical continuity.

Placement occurs using a unique repetition mandrel system for high-speed assembly. The Chobert® can also be bowl fed for larger volume applications using automated equipment.

Fast Facts:

  • Internally tapered bore ensures consistent light clamp to reduce potential damage to soft or brittle materials.
  • The light clamp makes it ideal for use as a pivot pin or hose tail.
  • Expands radially during installation to ensure maximum hole fill.
  • Lower in-place costs than welding or nail rivets.
  • Placed using a unique repetition mandrel system for high-speed assembly.
  • Can be bowl fed for larger volume applications using automated equipment.
  • Available as a customized design to meet your unique assembly requirements.
  • Popular assembly applications include automotive, electronic component, sheet metal, electrical engineering, injection molded components, switchgear, domestic appliance, and light fabrication.


  • Sizes: 2.4mm to 6.4mm (3/32" to ¼")
  • Materials: Aluminum alloy, steel, brass, nickel-plated brass, and tin-plated 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".

Customized 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 customized capabilities:

> Speed Fastener - Customized 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.

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The availability of the products described on this site, and the product descriptions, may vary from country to country. Consult your STANLEY® Engineered Fastening Account Executive or your local distributor for specific product information.