PennEngineering - TFA microPEM® FLEXTACK FASTENERS

The Bellville washer shaped head of the microPEM® FlexTack™ fastener is designed to increase vertical installation tolerance in designs.

Alternative to using micro-screws, eliminating the need to tap or use threaded inserts.
Installation time to simply press the part in (1.5 seconds) is less than the time to thread a screw in equals less total installed cost.
The Belleville-shaped head allows for stack-up tolerance relief in a design.
Eliminates the following:

Unit of Measure

Items	TFA-10-025 TFA microPEM® FLEXTACK FASTENERS	TFA-10-035 TFA microPEM® FLEXTACK FASTENERS	TFA-10-045 TFA microPEM® FLEXTACK FASTENERS	TFA-10-055 TFA microPEM® FLEXTACK FASTENERS
Fastener Material	N/A Aluminum
Base Panel Hole Size Code	N/A 10
Top Sheet Thickness Code	N/A 025	N/A 035	N/A 045	N/A 055
Top Sheet Thickness	N/A 0.18 to 0.28 mm.007 to .011 in	N/A 0.28 to 0.38 mm.011 to .015 in	N/A 0.38 to 0.48 mm.015 to .019 in	N/A 0.48 to 0.58 mm.019 to .023 in
Base Panel Min. Sheet Thickness¹	N/A 0.89 mm.035 in
Top Sheet Hole Size ± 0.05mm/± .002in	N/A 1.47 mm.058 in
Base Panel Hole Size -0.05mm/ -.002in	N/A 1.02 mm.040 in
A ± 0.025mm/±.001in	N/A 0.67 mm.026 in	N/A 0.77 mm.030 in	N/A 0.87 mm.034 in	N/A 0.97 mm0.38 in
B ± 0.075mm/±.003in	N/A 1.16 mm.046 in	N/A 1.26 mm.050 in	N/A 1.37 mm.054 in	N/A 1.47 mm.058 in
C Max.	N/A 0.89 mm.035 in
H ± 0.10mm/±.004in	N/A 2.91 mm.115 in
P ± 0.05mm/±.002in	N/A 1.21 mm.048 in
T ± 0.10mm/±.004in	N/A 0.3 mm.012 in
Min. Dist. Hole C/L to Edge	N/A 1 mm.039 in
Standard Finish	N/A Plain
For Use in Sheet Hardness	N/A HRB 45 or Less (Hardness Rockwell “B” Scale) HB 84 or Less (Hardness Brinell)
CAD Supplier	N/A PennEngineering® (PEM®)
¹ 0.89 mm / .035” for blind holes and 0.5 mm / .020” for through holes.