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All Categories > PEM® Brand Fasteners for Metal Sheets and Panels > Nuts for Sheet Metal > Flush Nuts – Type F, F4 > PEMSERT® Self-Clinching Flush Fasteners - Type F > PEMSERT® Self-Clinching Flush Fasteners - Type F - Unified > Part # F-0420-5  

Part # F-0420-5, PEMSERT® Self-Clinching Flush Fasteners - Type F - Unified

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PEMSERT self-clinching flush nuts are designed to be completely flush in sheets as thin as .060”.

These fasteners are ideal for applications where a thin sheet requires load-bearing threads but still must remain smooth, with no protrusions on either surface. The PEM flush nut can be installed easily by squeezing it into a round hole in metal sheets. When the fastener is installed, both the top and the bottom of the sheet remain smooth, enhancing the functional and cosmetic qualities of the entire assembly. PEMSERT self-clinching flush nuts can be installed in metal sheets before bending and forming. This can provide strong threads in places which would be inaccessible for installation after chassis are formed.

The hexagonal head along with the proven PEM self-clinching design ensures high axial and torsional strength and PEMSERT Type F fasteners can be ordered to conform to US NASM45938/4 specifications.




 Specifications   

Thread Size
.250-20 (1/4-20)

Thread Code
0420

Shank Code
5

A (Shank) Max.

 View
.182 in

Sheet Thickness
.187 Min. in

Hole Size in Sheet + .003 - .000
.344 in

C Max.
.343 in

H Nom.
.375 in

Min. Dist. Hole C/L to Edge
.34 in

For Use in Sheet Hardness1
HRB 70 / HB 125 or Less

Thread Specification
Internal, ASME B1.1, 2B

Fastener Material
300 Series Stainless Steel

Standard Finish
Passivated and/or tested per ASTM A380

CAD Supplier
PennEngineering® (PEM®)
1 HRB - Hardness Rockwell “B” Scale. HB - Hardness Brinell.


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·  F_Installed



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PEM Bulletin F

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