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
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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.
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
ITT2Q M8 25.3
2 crowns square headed type CROWN-NUT with an M8
thread, suitable for square tube section with an internal
dimension ranging from 25.3mm to 26.6mm
ITT2Q M10 22.1
2 crowns square headed type CROWN-NUT with an M10
thread, suitable for square tube section with an internal
dimension ranging from 22.1mm to 23.4mm
Dimensional
I/D
(Int. Box Section Size)
L
(Total Length)
d1
(Thread)
Part Number
d4
(Head A/F)
ITT2Q M8 15.7
ITT2Q M8 18.9
ITT2Q M8 22.1
ITT2Q M8 25.3
ITT2Q M8 26.6
M8
ITT2Q M8 28.4
26
ITT2Q M8 34.8
ITT2Q M10 22.1
ITT2Q M10 26.6
ITT2Q M10 34.8
d3
(Crown Diameter)
18.1
20.9
24.7
27.5
28.9
30.7
37.9
24.7
28.8
37.9
15.7 - 17.1
18.9 - 20.2
22.1 - 23.4
25.3 - 26.6
26.6 - 27.6
28.4 - 29.8
34.8 - 36.1
22.1 - 23.4
26.6 - 27.6
34.8 - 36.1
19
22
25
28
30
32
38
25
30
38
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
box section.
M10
26
Info
A Headed Insert for use inside the end of square 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 square section with a wide internal size tolerance range. Thanks to the flexibility of the
crown design, the same item code can be used for a range internal sizes.
•
The crown is designed so that the shape of the square section 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 ITT2Q
CROWN-NUT
SQUARE HEADED
