Pre-assembly of components
Part retention
Pinning methods
Purpose of pinning
Pinning is important in pre-assembly and part assembly operations.
It ensures parts are held in position during drilling phases, thereby avoiding misalignment issues.
It ensures permanent contact between parts to avoid gapping and pillowing issues.
During wet assembly, pinning allows the interposition sealant to flow before it polymerizes.
Edge pinning tools
Pinning tools
For positioning undrilled or edge parts, clamps are available. They provide initial retention of components. Installation is done manually.
Types of clamps
Sheet metal clamp - PManual installation
Beaked sheet metal clamp - Plier installation
Vise-grip pliers
C-clamps can also be used.
Edge pinning tools
Pinning tools
To pin drilled parts, retention tools that pass through the holes are used. These small tools are called pins, clips or more commonly "cleco fasteners"
Pins can be:
Screw-in.
Spring-loaded
The color indicates the shank diameter. They are available in plastic and metal.
Edge pinning tools
Pinning tools
Installation tools
Manual pliers This is a special plier for installing spring-loaded pins or sheet metal clamps. Always keep it with you, as it is used constantly.
The roller wheel, a manual roller tool. It is also used for screw-in pins; easy to keep in your pocket, used for small series.
Pneumatic screwdrivers They are used for screw-in pins. Several types exist depending on the type of screw pin
06-02-01-Pinning_methods.pptx
Lauak
Created on June 24, 2026
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Transcript
Pre-assembly of components
Part retention
Pinning methods
Purpose of pinning
Pinning is important in pre-assembly and part assembly operations.
It ensures parts are held in position during drilling phases, thereby avoiding misalignment issues.
It ensures permanent contact between parts to avoid gapping and pillowing issues.
During wet assembly, pinning allows the interposition sealant to flow before it polymerizes.
Edge pinning tools
Pinning tools
For positioning undrilled or edge parts, clamps are available. They provide initial retention of components. Installation is done manually.
Types of clamps
Sheet metal clamp - PManual installation
Beaked sheet metal clamp - Plier installation
Vise-grip pliers
C-clamps can also be used.
Edge pinning tools
Pinning tools
To pin drilled parts, retention tools that pass through the holes are used. These small tools are called pins, clips or more commonly "cleco fasteners"
Pins can be:
Screw-in.
Spring-loaded
The color indicates the shank diameter. They are available in plastic and metal.
Edge pinning tools
Pinning tools
Installation tools
Manual pliers This is a special plier for installing spring-loaded pins or sheet metal clamps. Always keep it with you, as it is used constantly.
The roller wheel, a manual roller tool. It is also used for screw-in pins; easy to keep in your pocket, used for small series.
Pneumatic screwdrivers They are used for screw-in pins. Several types exist depending on the type of screw pin