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
Heavy Duty Electro Zinc Plated Steel (ZI96)
Heavy Duty Electro Zinc Plated Steel for up to
12.9 bolts (HTZI96)
Stainless Steel (A2)
Stainless Steel for up to 12.9 bolts (HTS)
Aluminium (AL)
Aluminium (AL) for up to 8.8 bolts (HTA)
Brass (BR)
Part Number Examples
Part number is made up as follows:
(Type) (Thread code) (Grip Code) (Material/Finish code)
For example:
OPTI-BCLF M6 0525 ZI96 (BCT Large Flange Bulge Controlled-
M6-suitable for 0.5-2.5mm panel thickness-heavy duty
electro zinc plated steel)
OPTI-BCLF M8 3050 HTS (BCT Large Flange Bulge Controlled-
M8-suitable for 3.0-5.0mm panel thickness-high strength
stainless steel for use with up to 12.9 bolts)
M4 x 0.7
7.0
10.00
14.5
1525
1.5 - 2.5
0.80
6.90
15.5
2535
2.5 - 3.5
8.0
16.5
3545
3.5 - 4.5
17.5
4555
4.5 - 5.5
1.5
Dimensional
Thread
Size
Hole Size
+0.1 -0.0
D
L
Nom.
L2
Ref.
Grip
Code
To suit panel
thickness
(min - max)
S
B
±0.09
M8 x 1.25
11.0
16.00
20.5
1030
1.0 - 3.0
1.50
10.90
24.0
3050
3.0 - 5.0
12.5
26.0
4565
4.5 - 6.5
28.0
6080
6.0 - 8.0
M10 x 1.5
13.0
19.00
26.0
1035
1.0 - 3.5
2.00
12.90
29.0
3560
3.5 - 6.0
16.0
34.0
6085
6.0 - 8.5
C
Min.
2.3
2.7
M6 x 1.0
9.0
13.00
19.5
0525
0.5 - 2.5
1.50
8.90
20.0
2540
2.5 - 4.0
10.5
21.5
4055
4.0 - 5.5
23.0
5570
5.5 - 7.0
2.0
M5 x 0.8
8.0
11.00
17.0
0520
0.5 - 2.0
1.00
7.90
18.0
2030
2.0 - 3.0
10.0
19.0
3040
3.0 - 4.0
20.0
4050
4.0 - 5.0
1.8
0515
0.5 - 1.5
14.0
Info
BCT Large Flange Bulge Controlled is a new type of high performance rivet nut designed to provide much improved
performance over conventional rivet nuts.
BCT provides a strong captivated thread in panels and is ideally suited to applications where only one side of the
panel is accessible such as box or tube section.
Unlike conventional rivet nuts, BCT Bulge Controlled features a controlled upset point and larger bulge formation
which allows for perfect installation even in oversize or irregular holes. The bulge is formed without placing load on
the panel or hole wall, so they are especially suitable for use in softer or brittle materials such as composites or
sandwich sections for example.
Available in thread sizes M4 to M10, in RoHS compliant heavy duty electro zinc plated steel (giving 96 hour salt spray
protection), heavy duty electro zinc plated high strength steel suitable for use with up to 12.9 bolts, 304 stainless
steel, high strength stainless steel suitable for use with up to 12.9 bolts, aluminium, high strength aluminium
suitable for use with up to 8.8 bolts and brass. They can be installed into panels as thin as 0.5mm and as thick as
8.5mm. In addition to standard grips they can also be manufactured in grip ranges to suit your exact application
requirement.
Requiring the same installation tooling as conventional rivet nuts, tools range
from very low cost hand tools for low volume, to air powered automatic
installation guns for high volume applications.
BCT has 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.
BCT is a registered trademark of BBA srl.
BCT
®
LARGE FLANGE
BULGE CONTROLLED
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