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
Installation Method
Using your prefered type of
installation tool. KJ60 air tool
and N200 hand tool shown for
reference only.
Ensuring that you are using the
correct grip size rivet nut for the
panel you will be installing into,
screw the rivet nut fully on to
the tools threaded mandrel.
Follow the instructions specific
to your tool to set the correct
stroke length for proper rivet
nut placement. Fully insert the
rivet nut into the hole in the
work piece.
Ensuring that you are holding
the tool perpendicular to the
work piece, operate the tool to
set the rivet nut in place.
Unscrew the threaded mandrel
from the rivet nut.
That’s it. Your rivet nut is now
installed.
To ensure that the rivet nut
performs as intended it is
important that an optimum
bulge is formed.
Material & Finish
Electro Zinc Plated Steel (SZ)
A2 Stainless Steel (A2)
Aluminium (AL) - To Order
Part Number Examples
Part number is made up as follows:
(Type)-(Thread code)-(Grip Code)-(Material/Finish code)
For example:
CRSBK-M5-25-SZ (Countersunk Head Closed End Rivet Nut-M5-suitable for
0.5-2.5mm sheet thickness-electro zinc plated steel)
CRSBK-M8-30-A2 (Countersunk Head Closed End Rivet Nut-M8-suitable for
0.5-3.0mm sheet thickness-stainless steel)
Thread
Size
M4 x 0.7
M5 x 0.8
M6 x 1.0
M8 x 1.25
Hole Size
+0.1 -0.0
6.00
7.00
9.00
11.00
D
+0.25 -0.10
9.00
10.00
12.30
1500
L
±0.30
17.50
19.40
21.50
L2
Ref.
11.3
11.5
12.7
14.8
Grip
Code
25
30
30
To suit panel
thickness
(min - max)
16.70
20
0.5 - 2.0
0.5 - 2.5
0.5 - 3.0
0.5 - 3.0
S
±0.15
0.80
1.00
1.30
1.50
B
+0.08 -0.10
5.90
6.90
8.90
10.90
M10 x 1.5
13.00
17.0
26.90
19.2
40
1.0 - 4.0
1.60
12.90
18.70
40
2.0 - 4.0
19.50
50
2.5 - 5.0
21.20
50
3.0 - 5.0
24.00
55
3.0 - 5.5
Panel thickness ranges shown are preferred range. Other sizes are subject to availability or special order.
Dimensional
Info
Countersunk Head Closed End Splined Body Rivet nuts provide a strong captivated thread in thin panels and in
applications where only one side of the panel is accessible such as box or tube section.
Available in steel and stainless steel, they can be installed into panels as thin as 0.5mm and do not suffer from the
maximum hardness limitations of self-clinching nuts so are suitable for installation into hard or non-ductile panels.
Requiring special tooling for installation - tools range from very low cost hand tools for low volume, to air powered
automatic installation guns for high volume applications.
Rivet nuts have an advantage over other captivated fasteners because they can be installed on site or used for
repair work to replace a previously installed fastener that has failed. The advantage of installation from one side of
the application means that access to the back of the panel is never required.
RIVET NUT
COUNTERSUNK HEAD
CLOSED END SPLINED
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
Crown-Nuts
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
Reduced Head Imperial Hole
Size (TS)
Reduced Head Splined Body
Imperial Hole Size (TSK)
Reduced Head (TSE)
Reduced Head Splined Body
(TSEK)
Reduced Head Closed End
(TSB)
Reduced Head Closed End
Splined Body (TSBK)
Flat Head (FRS)
Flat Head Splined (FRSK)
Flat Head Closed End (FRSB)
Flat Head Closed End Splined
Body (FRSBK)
Countersunk Head (CRS)
Countersunk Head Splined
Body (CRSK)
Countersunk Head Closed
End (CRSB)
Countersunk Head Closed
End Splined Body (CRSBK)
Reduced Head Half Hexagon
Imperial Hole Size (HRS)
Reduced Head Half Hexagon
(HRSE)
Reduced Head Half Hexagon
Closed End (HRSB)
Reduced Head Full Hexagon
(HRSE/F)
Reduced Head Full Hexagon
Closed End (HRSB/F)
Flat Head Full Hexagon
(FHRS/F)
Flat Head Full Hexagon
Closed End (FHRSB/F)
BCT Reduced Head Multigrip
(OPTI-TS)
BCT Reduced Head Multigrip
Splined Body (OPTI-TSKN)
BCT Large Flange Multigrip
(OPTI-LF)
BCT Large Flange Multigrip
Splined Body
(OPTI-LFKN)
BCT Reduced Head Bulge
Controlled (OPTI-BCTS)
BCT Reduced Head Bulge
Controlled Splined Body
(OPTI-BCTSKN)
BCT Large Flange Bulge
Controlled (OPTI-BCLF)
BCT Large Flange Bulge
Controlled Splined Body
(OPTI-BCLFKN)
Installation Tools, Spares and
Servicing