NP
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NORTHERN PRECISION LTD
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NP
NORTHERN PRECISION LTD
Specialist Fasteners for Sheet Metal
+44 (0) 1302 836010
+44 (0) 1302 836012
Tel:
Fax:
sales@npfasteners.com
Quality
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Hole Depth = L + min. 2 thread pitches
inc.
Hole size
Min. wall thickness
PRESS PUNCH PRESS PUNCH
Screw should project min. 2 pitches to ensure full expansion
Material & Finish
Brass (B) Stainless Steel (A2)
Part Number Examples
Part number is made up as follows: (Type)-(Thread)-(Optional Body Length)-(Material code) For example: EI-M4-B (Non-Headed Expansion Insert for hard thermosetting plastics-M4- brass) HEI-M6-9.5-A2 (Headed Expansion Insert for hard thermosetting plastics-M6- 9.5mm body length-stainless steel)
RoHS REACH COMPLIANT
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
2.4
3.2
3.2
3.6
4.0
4.8
6.0
7.0
H
4.8
5.5
5.5
6.4
7.1
7.9
9.5
11.1
L Optional
-
-
3.5
3.5
5.0
6.0
9.5
9.5
D
3.2
4.0
4.0
4.7
5.5
6.3
7.9
9.5
B
0.43
0.51
0.51
0.66
0.82
0.99
1.25
1.25
L
3.9
4.7
4.7
6.3
7.9
9.4
12.6
12.6
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. Expansion Inserts for hard thermosetting plastics are available in a range of thread sizes and lengths in headed and non-headed variants, are manufactured from brass and stainless steel and are suitable for installation in hard thermosetting plastics by simply pressing in to a pre-prepared hole. Featuring sharp diamond knurling that expands into the hole wall during screw installation to provide good torque-to-turn and pull-out performance.
Post Moulded Expansion Inserts for Hard Thermoset Plastics
EXPANSION INSERTS FOR HARD THERMOSET PLASTICS
brass inserts for plastics