NP
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 836012 sales@npfasteners.com
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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.
Registered in England & Wales Company number 3275391
V.A.T Registration number GB 684 1384 17
NP
NORTHERN PRECISION LTD
Specialist Fasteners for Sheet Metal
+44 (0) 1302 836010
+44 (0) 1302 836012
Tel:
Fax:
sales@npfasteners.com
Quality
Service
Reliability
Northern Precision Ltd YouTube Channel
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
RoHS REACH COMPLIANT
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
d4 d3 I/D d1 L