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.
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
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 is made up as follows:
(Type) (Thread code) (Grip Code) (Material/Finish code)
For example:
OPTI-BCLFKN M5 2030 ZI96 (BCT Large Flange Bulge
Controlled Splined Body-M6-suitable for 2.0-3.0mm panel
thickness-heavy duty electro zinc plated steel)
OPTI-BCLFKN M8 3050 AL (BCT Large Flange Bulge Controlled
Splined Body-M8-suitable for 3.0-5.0mm panel thickness-high
strength aluminium)
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
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
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
BCT Large Flange Bulge Controlled Splined Body 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.