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Self Clinching Fasteners

Clinch Nuts

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Locking Clinch Nuts

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Flush Head Studs

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Unthreaded Pins

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High Strength Studs

Through Standoffs

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Snaptop Standoffs

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Panel Fasteners

Low Profile Panel Fasteners

Broaching Panel Fasteners

Plunger Assemblies

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NP - Self Clinching Fasteners - Panel Fasteners

Self Clinching Panel Fasteners provide a captivated spring loaded screw for use in thin sheet metal where subsequent access is required. They reduce loose components and so reduce the risk of loose hardware being lost or falling out and damaging internal components. Actuation can be by tool or hand.

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 in thread sizes M3 - M5 (M6 available to order) in a range of screw lengths.

Also available for installation into printed circuit boards type CBPF.

Please check for availability before specifying.

Thread
& Pitch

Screw
Code

Hole Size
+ 0.08

Minimum
Panel
Thickness

S
Max

C
Max

D
+0.4
-0.15

L1
± 0.64

E
± 0.13

L2
± 0.4

H1
± 1.5

H2
Max

M3 x 0.5

40

6.73

1.53

1.53

6.71

7.92

0

1.83

6.4

13.72

9.14

62*

3.2

9.5

M4 x 0.7

50

7.92

1.53

1.53

7.9

9.53

0

2.08

7.9

17.53

11.43

72*

3.2

11.1

94*

6.4

14.3

M5 x 0.8

50

8.74

1.53

1.53

8.72

10.31

0

2.08

7.9

17.53

11.47

72*

3.2

11.1

94*

6.4

14.3

M6 x 1.0*

60

10.49

1.53

1.53

10.47

11.89

0

2.46

9.5

22.35

14.73

82

3.2

12.7

04

6.4

15.9

* Made to special order only.

Materials

Finishes

300 Series Stainless Steel (A2)
Carbon Steel (Special Order Only

Bright Nickel over Copper Flash (CN)
(Special Order Only)

The following installation panel material hardness
limitations apply when installing Self Clinching fasteners.
Steel Panel Fasteners: 60HRB Max
Stainless Panel Fasteners: 70HRB max

Part Number Examples

Type | Thread | Screw Code | Finish
i.e. : NPF-M5-72-A2
(Panel Fastener-M5-Screw Code 72-Stainless Steel)

Installation Guide

Thread
Size

Screw
Length Code

L2
Dim Min

A
± 0.05

B
± 0.05

M3

40

6.4

8.76

8.2

62

9.5

M4

50

7.9

11.05

9.8

72

11.1

94

14.3

M5

50

7.9

11.05

10.69

72

11.1

94

14.3

M6

60

9.5

14.35

12.29

82

12.7

94

15.9

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 fastener is seated against the panel with no serrations visible. Do not over squeeze the fastener into the panel as this will 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.

Performance Data

Thread

Test Panel Material

Aluminum

Steel

Installation (kN)

Pushout (N)

Installation (kN)

Pushout (N)

M3

10.7

1068

13.3

1334

M4

12.9

1334

16.9

1779

M5

13.3

1779

17.8

2224

M6

15.6

1779

22.2

2669

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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