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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
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© 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.
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statement
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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
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
Crown-nuts
Crown-nut Round
Crown-nut Round Headed
Crown-nut Round Headed -
for Push Fit Castors
Crown-nut Square
Crown-nut Square Headed
Crown-nut Square Headed -
for Push Fit Castors
Material & Finish
Electro Zinc Plated Steel
Part Number Examples
ITT2T D11.3 18.9
2 crowns round headed type CROWN-NUT with an 11.3mm
diameter hole for push-fit castors, suitable for round tube
section with an internal diameter ranging from 18.9mm to
20.2mm
ITT2T D11.3 31.7
2 crowns round headed type CROWN-NUT with an 11.3mm
diameter hole for push-fit castors, suitable for round tube
section with an internal diameter ranging from 31.7mm to
32.9mm
Dimensional
I/D
(Tube Internal Size)
L
(Total Length)
d1
Part Number
d4
(Head Diameter)
ITT2T D11.3 18.9
ITT2T D11.3 21.4
ITT2T D11.3 22.1
ITT2T D11.3 22.7
ITT2T D11.3 24.6
11.3
ITT2T D11.3 25.3
38.1
ITT2T D11.3 28.4
ITT2T D11.3 31.7
ITT2T D11.3 34.8
ITT2T D11.3 37.3
ITT2T D11.3 41.4
ITT2T D11.3 47.5
d3
(Crown Diameter)
21.0
23.5
24.6
25.4
26.5
27.6
30.8
33.7
37.1
40.2
43.5
50.0
18.9 - 20.2
21.4 - 22.4
22.1 - 23.4
22.7 - 24.0
24.6 - 25.6
25.3 - 26.6
28.4 - 29.8
31.7 - 32.9
34.8 - 36.1
37.3 - 39.3
41.4 - 42.4
47.5 - 48.8
22
25
25
25
28
28
32
35
38
42
45
51
Non-binding dimensions in mm.
It is advisable to carry out preliminary assembly tests to determine the size that gives optimal performance in your application.
Application & Installation
Ideal for applications subject to push and pull
forces. The head only allows fitting as far as the
end face, so the Crown-nut insert can be used to
securely attach feet or wheels.
Press fit: gradually increase pressure on the insert
until the head seats against the end face of the
tube.
Info
A Headed Insert for use inside the end of round tube section
The Crown-nut is a revolutionary solution for the creation of a strong reusable socket at the end of round or square
section tubes. Crown-nut solves the issue of how to securely fix push-fit castors to the end of tube section,
guaranteeing superior fit and performance. The product range offers solutions for round tube and square section
and is available in a wide range of sizes. Threaded versions are also available where a strong female thread is
required.
Advantages of the Crown-nut
•
Can be installed into tube section with a wide internal diameter tolerance range. Thanks to the flexibility of
the crown design, the same item code can be used for a range internal diameters.
•
The crown is designed so that the shape of the tube is not altered during installation, guaranteeing the
aesthetics of the external surface.
•
Crown-nuts are easy to install and are cost effective. The press-in fit is fast and easy, enabling the elimination
of traditional and costly assembly processes such as welding and staking.
Note
After the insertion of the Crown Nut avoid heat treatments, galvanization and other heating operations that could
compromise the characteristics of the product.
Type ITT2T
CROWN-NUT
ROUND HEADED FOR PUSH FIT CASTORS
