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
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© 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
PRESS
PUNCH
PRESS
PUNCH
UNHEADED INSERT
FULLY INSTALLED
HEADED INSERT
FULLY INSTALLED
Hole Depth = L
+ min. 2 thread
pitches
1°
inc.
Hole
size
Min. wall
thickness
PRESS
PUNCH
Material & Finish
Brass (B)
Stainless Steel (A2)
Part Number Examples
Part number is made up as follows:
(Type)-(Thread)-(Material code)
For example:
FLI-M4-B (Press-In Insert for thermoplastics-M4-brass)
HFLI-M5-A2 (Headed Press-In Insert for thermoplastics-M5-stainless steel)
Downloadable Data Sheet
Back
Installation
Dimensional
Thread
Size
M2 x 0.4
M2.5 x 0.45
M3 x 0.5
M3.5 x 0.6
M4 x 0.7
M5 x 0.8
M6 x 1.0
M8 x 1.25
Hole Size
+0.10
3.2
4.0
4.0
4.8
5.6
6.4
8.0
9.6
Min. wall
thickness
1.6
2.0
2.0
2.4
2.8
3.2
4.0
4.8
H
4.8
5.5
5.5
6.4
7.1
7.9
9.5
11.0
D
3.7
4.5
4.5
5.3
6.1
7.0
8.6
10.2
A
3.1
3.9
3.9
4.7
5.5
6.3
7.9
9.5
B
0.45
0.58
0.58
0.74
0.89
1.07
1.32
1.32
L
4.0
4.8
48
6.4
7.9
9.5
12.7
12.7
Info
Post moulded inserts can offer significant benefits over mould-in inserts such as a reduction of in place cost, no
secondary operation to clean flash residue from threads, fewer rejects due to dislodged inserts and ease of
installation.
Press-In Inserts for thermoplastics are available in a range of thread sizes, in headed and non-headed variants, are
manufactured from brass and stainless steel and are suitable for installation in soft, medium and hard
thermoplastics by simply pressing in to a pre-prepared hole. Featuring a free running thread, the sharp radial knurl
provides good torque-to-turn resistance while the fins lock into the hole wall during installation providing good pull-
out performance.
PRESS-IN INSERT FOR
THERMOPLASTICS
