Contact us
You can contact us using any
of the methods below.
Unit 3 Durham Lane
Armthorpe
Doncaster
South Yorkshire DN3 3FE
England
+44 (0)1302 836010
+44 (0)1302 831555
sales@npfasteners.com
All rights reserved
© Northern Precision Ltd.
NORTHERN PRECISION LTD
Accreditations
Northern Precision Ltd operate a quality management
system in accordance with ISO 9001.
The ISO 9001 standard is recognised worldwide and
you can be assured of the benefits of working with a
certified company knowing that our management
systems are constantly assessed and improved.
Regulatory
RoHS|WEEE Compliance
REACH Compliance
Conflict minerals
statement
Environmental Policy
Opening Hours
Mon - Fri 08:00 - 17:00
Registered in England & Wales
Company number 3275391
V.A.T Registration number
GB 684 1384 17
NORTHERN PRECISION LTD
Specialist Fasteners
for Sheet Metal
+44 (0) 1302 836010
+44 (0) 1302 831555
Tel:
Fax:
sales@npfasteners.com
Quality
Service
Reliability
Self-Clinching Fasteners
Broaching Fasteners
Arnold & Shinjo Fasteners
Rivet Bushes
Rivet Nuts
Weld Fasteners
Cage Nuts
Blind Rivets
Inserts for Plastics
Inserts for Stone, Solid
Materials, Composites &
Sandwich Panels
Crown-Nuts
Fast-Con
Installation Equipment
Turned & Cold Formed
special parts made to order
Bespoke fastener design &
development
Fastener & Application
testing
Technical support
ISO 9001
RoHS|WEEE Compliance
REACH Compliance
Conflict minerals
Environmental Policy
SERVICES & SUPPORT
Material & Finish
Steel Nut - Spring Steel Cage
Electro Plated Zinc (ZC)
Part Number Examples
Part number is made up as follows:
(Type)-(Thread)-(Panel Range Code)-(Material/Finish code)
For example:
CNA-M5-0-ZC (Cage Nut for 8.3 hole-M5-0.5 to 1.1mm panel range-electro-
zinc plated steel)
CNB-M6-3-ZC (Cage Nut for 9.5 hole-M6-2.8 to 3.5mm panel range-electro-
zinc plated steel)
Downloadable Data Sheet
Back
Dimensional
Type
H
Panel range
P
A
B
Thread Size
Panel range
code
Hole
Size
CNA
M4 x 0.7
8.0
0.5- 1.1
0
6.0
12.0
8.3
8.5
1.2 - 1.6
1
9.5
1.7 - 2.5
2
10.5
2.6 - 3.5
3
11.5
3.6 - 4.5
4
CNA
M5 x 0.8
8.0
0.5 - 1.1
0
6.0
12.0
8.3
8.5
1.2 - 1.6
1
9.5
1.7 - 2.5
2
10.5
2.6 - 3.5
3
11.5
3.6 - 4.5
4
CNA
M6 x 1.0
8.0
0.5 - 1.1
0
6.0
12.0
8.3
8.5
1.2 - 1.6
1
9.5
1.7 - 2.5
2
10.5
2.6 - 3.5
3
11.5
3.6 - 4.5
4
CNB
M4 x 0.7
8.7
0.7 - 1.6
1
6.0
13.2
9.5
9.5
1.7 - 2.7
2
10.2
2.8 - 3.5
3
CNB
M5 x 0.8
8.7
0.7 - 1.6
1
6.5
13.2
9.5
9.5
1.7 - 2.7
2
10.2
2.8 - 3.5
3
CNB
M6 x 1.0
8.7
0.7 - 1.6
1
6.5
13.2
9.5
9.5
1.7 - 2.7
2
10.2
2.8 - 3.5
3
CNB
M8 x 1.25
10.4
1.0 - 1.7
1
7.8
16.0
12.3
12.0
1.8 - 3.2
2
13.5
3.3 - 4.7
3
14.5
4.8 - 5.5
4
CNB
M10 x 1.5
10.4
1.0 - 1.7
1
7.8
16.0
12.3
12.0
1.8 - 3.2
2
13.5
3.3 - 4.7
3
14.5
4.8 - 6.2
4
Info
A cage nut consists of a square nut in a spring steel cage which wraps around the nut. The cage has two lugs that
when compressed allow the cage to be inserted into a square hole. When the lugs are released, they hold the nut in
position behind the hole.
Using cage nuts provides several benefits over threaded holes. It permits a range of choice of nut and bolts size. If a
screw is over-tightened, the nut can easily be replaced, unlike a pre-threaded hole with stripped threads. Cage nuts
are easy to use on materials too thin or soft to be threaded.
The nut is slightly loose in the cage to allow for minor adjustments in alignment, reducing the likelihood that the
threads will be stripped during equipment installation and removal. The dimensions of the spring steel lugs
determines thickness of the panel into which the cage nut may be fitted. The cage / lug dimensions determine the
range of hole sizes into which the cage nut can be fitted.
Cage nuts are commonly used in the mounting rails of equipment racks for example.
CAGE NUTS
