Aeronautical Assemblies
Permanent Fasteners
Main Permanent Fasteners
Introduction
Squeeze rivets are the most commonly used fastening elements in metal structure construction. However, when superior mechanical strength is required, access is not easy, etc., several types of special permanent fasteners are available to achieve the assembly.
The Different Types
The Different Types
Special permanent fasteners can be classified into two main categories:
Bolt-type Fasteners
Blind-type Fasteners
Access to only one side of the assembly is required.
Access to both sides of the assembly is required.
The Different Types
Bolt-type Fasteners are divided into two categories:
Bolt-type Fasteners
Blind-type Fasteners
Access to only one side of the assembly is required.
Access to both sides of the assembly is required.
Cylindrical
Conical
The shank shape is cylindrical for tension and/or shear load transfer
The shank shape is conical for superior load transfer
The Different Types
Cylindrical Bolt-type Fasteners are also divided into two categories:
Bolt-type Fasteners
Blind-type Fasteners
Access to only one side of the assembly is required.
Access to both sides of the assembly is required.
Cylindrical
Conical
The shank shape is cylindrical for tension and/or shear load transfer
The shank shape is conical for superior load transfer
Threaded (nut)
Swaged (collar)
Locking by screwing a nut
Locking by swaging a collar
The Different Types
Blind-type Fasteners are divided into two categories based on their installation method:
Bolt-type Fasteners
Blind-type Fasteners
Access to only one side of the assembly is required.
Access to both sides of the assembly is required.
Cylindrical
Conical
The shank shape is cylindrical for tension and/or shear load transfer
The shank shape is conical for superior load transfer
Threaded (nut)
Swaged (collar)
Locking by swaging by pulling a stem from the head side
Threaded (nut)
Swaged (collar)
Locking by screwing from the head side
Locking by screwing a nut
Locking by swaging a collar
Conception YA Group Pour LAUAK ESKOLA – Tous droits réservés.
The Different Types
An overview of the different fasteners. They are named on the following pages and explained in detail in specific courses.
Bolt-type Fasteners
Blind-type Fasteners
Cylindrical
Conical
Threaded (nut)
Swaged (collar)
Threaded (nut)
Swaged (collar)
Bolt-type Permanent Fasteners
Bolt-type Permanent Fasteners
Conical
Taper-Lok
Cylindrical
Threaded (nut)
Swaged (collar)
Hi-Lite Hi-Lok Hi-Tigue
Lockbolt LGP, MGP, GP, etc.
Blind-type Permanent Fasteners
Blind-type Permanent Fasteners
Swaged (collar)
NAS1919 / NAS1921 CHERRY MAX CHERRY LOCK CHERRY BULB HUCK MAX Etc.
Threaded (nut)
JO-BOLT VISU-LOK PLT COMPOSIT-LOK Etc.
Summary
Bolt-type Fasteners
Conical
Access to both sides of the assembly is required.
Threaded (nut)
Cylindrical
Locking by screwing a nut
Swaged (collar)
Locking by swaging a collar
Blind-type Fasteners
Threaded (nut)
Locking by screwing from the head side
Access to only one side of the assembly is required.
Swaged (collar)
Locking by swaging by pulling a stem from the head side
09-03-01-Special_Fasteners.pptx
Lauak
Created on June 25, 2026
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Transcript
Aeronautical Assemblies
Permanent Fasteners
Main Permanent Fasteners
Introduction
Squeeze rivets are the most commonly used fastening elements in metal structure construction. However, when superior mechanical strength is required, access is not easy, etc., several types of special permanent fasteners are available to achieve the assembly.
The Different Types
The Different Types
Special permanent fasteners can be classified into two main categories:
Bolt-type Fasteners
Blind-type Fasteners
Access to only one side of the assembly is required.
Access to both sides of the assembly is required.
The Different Types
Bolt-type Fasteners are divided into two categories:
Bolt-type Fasteners
Blind-type Fasteners
Access to only one side of the assembly is required.
Access to both sides of the assembly is required.
Cylindrical
Conical
The shank shape is cylindrical for tension and/or shear load transfer
The shank shape is conical for superior load transfer
The Different Types
Cylindrical Bolt-type Fasteners are also divided into two categories:
Bolt-type Fasteners
Blind-type Fasteners
Access to only one side of the assembly is required.
Access to both sides of the assembly is required.
Cylindrical
Conical
The shank shape is cylindrical for tension and/or shear load transfer
The shank shape is conical for superior load transfer
Threaded (nut)
Swaged (collar)
Locking by screwing a nut
Locking by swaging a collar
The Different Types
Blind-type Fasteners are divided into two categories based on their installation method:
Bolt-type Fasteners
Blind-type Fasteners
Access to only one side of the assembly is required.
Access to both sides of the assembly is required.
Cylindrical
Conical
The shank shape is cylindrical for tension and/or shear load transfer
The shank shape is conical for superior load transfer
Threaded (nut)
Swaged (collar)
Locking by swaging by pulling a stem from the head side
Threaded (nut)
Swaged (collar)
Locking by screwing from the head side
Locking by screwing a nut
Locking by swaging a collar
Conception YA Group Pour LAUAK ESKOLA – Tous droits réservés.
The Different Types
An overview of the different fasteners. They are named on the following pages and explained in detail in specific courses.
Bolt-type Fasteners
Blind-type Fasteners
Cylindrical
Conical
Threaded (nut)
Swaged (collar)
Threaded (nut)
Swaged (collar)
Bolt-type Permanent Fasteners
Bolt-type Permanent Fasteners
Conical
Taper-Lok
Cylindrical
Threaded (nut)
Swaged (collar)
Hi-Lite Hi-Lok Hi-Tigue
Lockbolt LGP, MGP, GP, etc.
Blind-type Permanent Fasteners
Blind-type Permanent Fasteners
Swaged (collar)
NAS1919 / NAS1921 CHERRY MAX CHERRY LOCK CHERRY BULB HUCK MAX Etc.
Threaded (nut)
JO-BOLT VISU-LOK PLT COMPOSIT-LOK Etc.
Summary
Bolt-type Fasteners
Conical
Access to both sides of the assembly is required.
Threaded (nut)
Cylindrical
Locking by screwing a nut
Swaged (collar)
Locking by swaging a collar
Blind-type Fasteners
Threaded (nut)
Locking by screwing from the head side
Access to only one side of the assembly is required.
Swaged (collar)
Locking by swaging by pulling a stem from the head side