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
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Material & Finish
Electro Zinc Plated Steel
Part Number Examples
ITT2Q D11.3 18.9 2 crowns square headed type CROWN-NUT with an 11.3mm diameter hole for push-fit castors, suitable for square tube section with an internal diameter ranging from 18.9mm to 20.2mm ITT2Q D11.3 34.8 2 crowns square headed type CROWN-NUT with an 11.3mm diameter hole for push-fit castors, suitable for square tube section with an internal diameter ranging from 34.8mm to 36.1mm
RoHS REACH COMPLIANT
Dimensional
I/D (Int. Box Section Size)
L (Total Length)
d1
Part Number
d4 (Head A/F)
ITT2Q D11.3 18.9
ITT2Q D11.3 22.1
ITT2Q D11.3 25.3
ITT2Q D11.3 26.4
ITT2Q D11.3 28.4
11.3
ITT2Q D11.3 34.8
38.1
ITT2Q D11.3 41.4
ITT2Q D11.3 47.5
d3 (Crown Diameter)
21.0
24.6
276
28.8
30.6
37.0
43.5
50.0
18.9 - 20.2
22.1 - 23.4
25.3 - 26.6
26.4 - 27.8
28.4 - 29.8
34.8 - 36.1
41.4 - 42.4
47.5 - 48.8
22
25
28
30
32
38
45
50
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 square 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 ITT2Q
CROWN-NUT SQUARE HEADED FOR PUSH FIT CASTORS
d4 d3 I/D d1 L