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PEMSERT® Self-clinching Flush Fasteners.
Installs flush into stainless steel sheets

Type F4™ fasteners are ideal for flush applications where a stainless steel sheet requires loadbearing threads. The PEM® flush nut can be installed easily by squeezing it into a round hole in metal sheets. When the fastener is properly installed, both the top and the bottom of the sheet remain flat, enhancing the functional and cosmetic qualities of the entire assembly. The hexagonal head along with the proven PEM self-clinching design ensures high axial and torsional strength.
Flush nuts – F
PEMSERT® Self-Clinching Flush Fasteners - Type F 2
Unit of Measure
Items Flush nuts – F
F4-256-1
PEMSERT® Self-Clinching Flush Fasteners - Type F4 - Unified
Flush nuts – F
F4-440-1
PEMSERT® Self-Clinching Flush Fasteners - Type F4 - Unified
Flush nuts – F
F4-632-1
PEMSERT® Self-Clinching Flush Fasteners - Type F4 - Unified
Flush nuts – F
F4-832-1
PEMSERT® Self-Clinching Flush Fasteners - Type F4 - Unified
Flush nuts – F
F4-032-1
PEMSERT® Self-Clinching Flush Fasteners - Type F4 - Unified
Thread Size N/A .086-56 (#2-56) N/A .112-40 (#4-40) N/A .138-32 (#6-32) N/A .164-32 (#8-32) N/A .190-32 (#10-32)
Thread Code N/A 256 N/A 440 N/A 632 N/A 832 N/A 032
Shank Code N/A 1
A (Shank) Max. N/A .060 in
Sheet Thickness N/A .060 to .091 in
Hole Size in Sheet + .003 - .000 N/A .172 in N/A .172 in N/A .213 in N/A .290 in N/A .312 in
C Max. N/A .171 in a1386.jpg N/A .171 in a1386.jpg N/A .212 in a1386.jpg N/A .289 in a1386.jpg N/A .311 in a1386.jpg
H Nom. N/A .188 in N/A .188 in N/A .250 in N/A .312 in N/A .343 in
Min. Dist. Hole C/L to Edge N/A .23 in N/A .23 in N/A .27 in N/A .28 in N/A .310 in
For Use in Sheet Hardness1 N/A HRB 88 / HB 183 or Less
Thread Specification N/A Internal, ASME B1.1, 2B
Fastener Material N/A Heat treated 400 Series Stainless Steel
Standard Finish N/A Passivated and/or tested per ASTM A380
CAD Supplier N/A PennEngineering® (PEM®)
Min. Sheet Thickness N/A
  • 1 HRB - Hardness Rockwell “B” Scale. HB - Hardness Brinell.