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NP - Self Clinching Fasteners - Plunger Assemblies
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Self Clinching Plunger Assemblies provide a captivated spring loaded plunger for use in thin sheet metal applications where a positioning or locking pin is required.
They reduce loose components and so reduce the risk of loose hardware being lost or falling out and damaging internal components.
Actuation is by hand - simply pull up and twist the head to lock in the retracted postion. Turn the head the opposite way to release and the plunger springs back into place.
Like all self clinching fasteners they are installed using a parallel squeezing action so require access to both sides of the panel for initial installation.
Available in Steel and Stainless Steel. Also available without the locking feature (specify type NSL2) to special order.
Please check for availability before specifying.
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Also available without locking feature - Type NSL2 (made to order only) |
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Hole Size
+ 0.08 - 0.00 |
Minimum
Panel
Thickness |
Min. Dist
C/L to Edge |
A
+0.0 -0.13 |
E
± 0.25 |
D
± 0.25 |
C
Max |
S
± 0.25 |
H
± 0.25 |
E1
± 0.25 |
E2
± 1.0 |
L
± 0.13 |
8.33 |
1.53 |
8.64 |
6.35 |
12.7 |
10.3 |
8.31 |
7.87 |
4.32 |
15.11 |
22.73 |
10.92 |
Please check availability before specifying.
Materials |
Finishes |
Carbon Steel
300 Series Stainless Steel (A2)
- (Body S/S Knob Steel Nickel Plated)
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Bright Nickel over Copper Flash (CN) |
The following installation panel material
hardness limitations apply when installing
Self Clinching Low Profile Panel Fasteners.
Steel Low Profile Panel Fasteners: 80HRB Max
Stainless Steel Low Profile Panel Fasteners: 70HRB max
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Part Number Examples |
Type | 04 | 4 | Finish
i.e. : NTL2-04-4-CN
(Self Clinching Plunger Assembly
- Steel Copper Nickel)
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Installation Guide
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First punch or drill the correct size hole. DO NOT deburr the hole prior to installation as this will remove material required during the clinching process. It is preferable to install the fastener from the side of the panel with the burring or blow through.
Place the fastener in the hole like in the diagram above making sure the part is seated squarely.
Apply a parallel squeezing force until the head is seated against the panel with no serrations visible. Do not over squeeze the fastener into the panel as this could result in the fastener being damaged.
When installing Self Clinching fasteners, please pay attention to the minimum hole centerline to edge and parent material hardness limitations.
For special applications or if you are unsure of any aspect about the usage or installation of this fastener, give our sales office a call and we will do our best to offer you a solution or give advice on your application.
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Performance Data
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Test Panel |
Aluminium |
Steel |
Installation (kN) |
Pushout (N) |
Installation (kN) |
Pushout (N) |
13.3 |
1779 |
17.8 |
2224 |
The above data is based on average values obtained in a test environment. Variations in hole size, panel material and installation will effect performance. It is recommended that you carry out your own performance tests in the actual application. Contact our sales department who will be happy to supply samples free of charge.
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