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Arnold & Shinjo
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Np
Self Clinching Fasteners

Clinch Nuts

Flush Nuts

Blind Clinch Nuts

Mini Clinch Nuts

Nyloc Clinch Nuts

Locking Clinch Nuts

Floating Clinch Nuts

Flush Head Studs

Reduced Head Studs

Unthreaded Pins

Tapered Pins

High Strength Studs

Through Standoffs

Blind Standoffs

Snaptop Standoffs

Keyhole Standoffs

Panel Fasteners

Low Profile Panel Fasteners

Broaching Panel Fasteners

Plunger Assemblies

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NP - Self Clinching Fasteners - Keyhole Standoffs

Self Clinching Keyhole Standoffs reduce both the time and costs associated with traditional assembly methods for, say, PCBs.

The design of this fastener allows a panel or PCB to be quickly slid sideways and locked into place via a keyhole shaped hole in the mating panel. To remove, simply slide the opposite way and lift the panel off. A Through-Hole or Blind-Standoff can also be used in conjunction with this part to provide a secure fixing with 1 screw removal.

The use of this fastener will also minimise the amount of loose hardware (screws, for example) usually associated with such tasks.

Installed from the bottom of the panel, Keyhole Standoffs install flush and are suitable for installation in Steel and Aluminium bottom panels of minimum 1 mm thick with the Keyhole feature suitable for top panels of 1.45 mm to 1.62 mm.

Available in Steel, Stainless Steel and Aluminium in a range of lengths to suit your application.

Like all self clinching fasteners they are installed using a parallel squeezing action so require access to both sides of the panel.

Please check for availability before specifying.

E Nom

B Max

D1 ± 0.08

D2 ± 0.08

H Max

T ± 0.08

Anvil Hole ± 0.08

6.35

5.38

4.50

2.50

1.72

1.03

5.50


Available Lengths

Length (L) ± 0.13

6

8

10

12

14

16

18

20

22

25

Please check for availability before specifying.

Bottom Panel

Top Panel

Bottom Mounting
Hole +0.08 -0.0

Minimum
Panel
Thickness

Minimum
C/L to
Edge E2

Top Mounting Hole

Material

Thickness
Range

Minimum
C/L to
Edge E1

Rad 1
Nom

Rad 2
± 0.08

F
± 0.08

G
Min

5.4

1.0

6.6

1.5

5.0

3

3.75

Metal Or PCB

1.45 - 1.62

4.1

Materials

Finishes

Carbon Steel
Stainless Steel (A2)
Aluminium (AL) (Special Order)

Bright Zinc / Trivalent Clear Passivate (ZI)
Other finishes available to order

The following panel material hardness limitations
apply when installing Self Clinching Standoffs.
Steel Keyhole Standoffs: 80HRB Max,
Stainless Steel Keyhole Standoffs: 70HRB Max,
Aluminium Keyhole Standoffs 50HRB Max.

Part Number Examples

Type | Length | Finish
i.e. : KHSO-61.5-10-ZI
(Keyhole Standoff - 10mm - Steel - BZP)
i.e. : KHSO-61.5-20-A2
(Keyhole Standoff - 20mm - Stainless)

Installation Guide

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 installed flush in the panel.

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

1.5mm Aluminium

1.5mm Steel

Installation (kN)

Pushout (N)

Installation (kN)

Pushout (N)

7.1

1100

14.2

2600


1.5mm Aluminium

1.5mm Steel

Standoff Length

Standoff Length

6

8

10

12

14

16

18

20

22

25

6

8

10

12

14

16

18

20

22

25

Maximum Side Load Force (N)

Maximum Side Load Force (N)

296

228

184

156

136

116

104

96

88

76

696

540

440

372

320

080

252

228

208

184

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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