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
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 M8 19.5
2 crowns round headed type CROWN-NUT with an M8
thread, suitable for round tube section with an internal
diameter ranging from 19.5mm to 20.9mm
ITT2T M10 34.8
2 crowns round headed type CROWN-NUT with an M10
thread, suitable for round tube section with an internal
diameter ranging from 34.8mm to 36.1mm
Dimensional
I/D
(Tube Internal Size)
L
(Total Length)
d1
(Thread)
Part Number
d4
(Head Diameter)
ITT2T M8 14.8
ITT2T M8 16.4
ITT2T M8 17.9
ITT2T M8 18.9
ITT2T M8 19.5
M8
ITT2T M8 21.4
26
ITT2T M8 22.1
ITT2T M8 22.7
ITT2T M8 24.6
ITT2T M8 25.3
ITT2T M8 26.0
ITT2T M8 28.4
ITT2T M8 31.7
ITT2T M8 34.8
ITT2T M8 56.0
ITT2T M10 18.9
ITT2T M10 21.4
ITT2T M10 22.7
M10
ITT2T M10 24.6
26
ITT2T M10 26.0
ITT2T M10 28.4
ITT2T M10 31.7
ITT2T M10 34.8
d3
(Crown Diameter)
17.0
18.7
19.7
21.0
21.6
23.5
24.6
25.4
26.5
27.6
28.9
30.8
33.7
37.1
59.9
21.6
23.5
25.4
26.5
28.9
30.8
33.7
37.1
39.0
14.8 - 16.1
16.4 - 17.7
17.9 - 19.3
18.9 - 20.2
19.5 - 20.9
21.4 - 22.4
22.1 - 23.4
22.7 - 24.0
24.6 - 25.6
25.3 - 26.6
26.0 - 28.0
28.4 - 29.8
31.7 - 32.9
34.8 - 36.1
56.1 - 58.0
18.9 - 20.2
21.4 - 22.4
22.7 - 24.0
24.6 - 25.6
26.0 - 28.0
28.4 - 29.8
31.7 - 32.9
34.8 - 36.1
36.0 - 38.0
ITT2T M10 36.0
19
19
22
22
22
25
25
25
28
29
30
32
35
38
60
22
25
25
28
30
32
35
38
40
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 female thread at the end of round or
square section tubes. Crown-nut solves the issue of how to securely fix to the end of tube section, guaranteeing
superior torque-out and pull-out performance. The product range offers solutions for round tube and square
section and is available in a wide range of sizes. A version is also available that is designed to accept push-fit castors.
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
