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All Categories > PEM® Brand Self-Clinching, Broaching, Surface Mount, Flare and Weld Mounted Fasteners > 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-632-2  
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Part # F-632-2, PEMSERT® Self-Clinching Flush Fasteners - Type F - Unified

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.

Flush nuts – F

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PEMSERT® Self-Clinching Flush Fasteners - Type F 2

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Thread Size

.138-32 (#6-32)

Thread Code


Shank Code


A (Shank) Max.

.090 in

Sheet Thickness

.091 Min. in

Hole Size in Sheet + .003 - .000

.213 in

C Max.

.212 in

H Nom.

.250 in

Min. Dist. Hole C/L to Edge

.27 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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