PFZ | Press-in Fin Zerts

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Dimensions

Insert Thread Insert Thread Code L Insert Length Insert Length Code Boss A Head Thickness C Head Diameter D Insert Diameter P Pilot Diameter Number of Fins
B Hole Dia. +0.10 -0.00 W Wall Thickness Min.
M2 x 0.4 M2 4.00 4.00 3.20 1.60 0.45 4.80 3.73 3.10 2
M2.5 x 0.45 M2.5 4.80 4.80 4.00 2.00 0.58 5.50 4.52 3.90 3
M3 x 0.5 M3 4.80 4.80 4.00 2.00 0.58 5.50 4.52 3.90 3
M3.5 x 0.6 M3.5 6.40 6.40 4.80 2.40 0.74 6.40 5.31 4.70 4
M4 x 0.7 M4 7.90 7.90 5.60 2.80 0.89 7.10 6.10 5.50 5
M5 x 0.8 M5 9.50 9.50 6.40 3.20 1.07 7.90 6.96 6.30 5
M6 x 1.0 M6 12.70 12.70 8.00 4.00 1.32 9.50 8.56 7.90 7
M8 x 1.25 M8 12.70 12.70 9.60 4.80 1.32 11.10 10.16 9.50 7

(1) All dimensions are in millimeters and reference unless toleranced.

Boss Design Recommendation

The PFZ Press–in Fin Zert is designed to be installed into a straight hole with a 1° inclusive taper. The top of the hole should not be countersunk or counter bored as this will decrease the insert’s performance. The recommended hole size applies at the point reached by the bottom of the insert. Molded holes should be used wherever possible as drilled holes may result in diminished performance. Minimum boss wall thicknesses shown are for reference and may vary depending on the type of plastic.

Installation

Press the insert into the boss using a squeezing action– never a hammer blow. Ensure that the insert maintains axial alignment during installation to prevent tilting which will induce side loads on the boss. Oversize boss holes weaken the insert’s self–aligning characteristics causing side loads which may lead to possible boss cracking.

Performance

Material & Finish


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Material CodeMaterial DescriptionFinish CodeFinish Description
SSStainless Steel

Contact a PENCOM Account Representative for other material & finish options.