CNA | Self-Clinching

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When second sourcing PENCOM’s products, PENCOM recommends that the part is tested in the application to ensure that it will meet all performance requirements.

Dimensions

ThreadThread
Code
Screw
Length
Code
SheetA
(Shank)
Max.
C
Max.
E
±.010
P1
Ref.
Minimum
Thickness
Hole
Size
+.003
-.000
Minimum
Distance
Hole Center
to Edge
4-40440.060.060.265.25.060.264.312.060
.185.185
6-32632.060.060.281.28.060.280.344.060
.185.185
.310.310
8-32832.060.060.312.31.060.311.375.060
.185.185
.310.310
10-321032.060.060.344.34.060.343.406.060
.185.185
.310.310
1/4-202520.060.060.413.38.060.412.468.060
.185.185
.310.310
General (Continued)
ThreadThread
Code
Screw
Length
Code
P2
±.016
P3
±.025
H1
Max.
H2
Ref.
Drive Size
Cross-
Recess
Six-LobeSlot
4-40440.060.250.000.370.540#1T-10.040W
.040D
.185.375.125
6-32632.060.250.000.380.540#2T-15.051W
.047D
.185.375.125
.310.500.250
8-32832.060.312.000.480.705#2T-20.055W
.055D
.185.437.125
.310.562.250
10-321032.060.312.000.490.705#2T-25.059W
.055D
.185.437.125
.310.562.250
1/4-202520.060.375.000.620.905#3T-25.071W
.059D
.185.500.125
.310.625.250

Material & Finish

Material
Code
Material DescriptionFinish
Code
Finish DescriptionFor Use in
Sheet Hardness
RetainerScrewSpringRetainerScrewSpringHRB 70
Max.
HRB 60
Max.
SS300-Series
Stainless Steel
400-Series
Heat Treated
Stainless Steel
300-Series
Stainless Steel
BLK-NITBlack
Nitride
Black
Nitride
Passivated
and/or
Tested per
ASTM
A 967
SS300-Series
Stainless Steel
400-Series
Heat Treated
Stainless Steel
300-Series
Stainless Steel
PPassivated
and/or
Tested per
ASTM
A 967
Passivated
and/or
Tested per
ASTM
A 967
Passivated
and/or
Tested per
ASTM
A 967
STLCarbon SteelHeat Treated
Carbon Steel
300-Series
Stainless Steel
NIBright Nickel
per ASTM B
689
Type II,
Class 5
Bright Nickel
per ASTM B
689
Type II,
Class 5
Passivated
and/or
Tested per
ASTM
A 967

Installation & Performance

  1. Prepare correct sized mounting hole in sheet. Do not deburr hole edges.
  2. Insert fastener in recessed anvil, locate sheet hole over captive screw shank with hole punch side of sheet toward the retainer and center punch over screw thread.
  3. Squeeze the fastener between concentric and parallel anvil and punch surfaces. Use only enough pressure to seat the retainer shoulder flush with the sheet. Anvil and punch should be made from hardened tool steel or may be ordered using the PENCOM part numbers shown in the tables below.
Anvil and Punch Dimensions
Thread
Code
AnvilPunch
A
±.002
C
±.002
Part
Number
D
±.002
Part
Number
440.345.358TL1314.190TL1303
632.345.390TL1315.214TL1304
832.435.421TL1316.243TL1305
1032.435.452TL1317.267TL1306
2520.555.514TL1318.329TL1307
Performance
Thread
Code
Material
Code
Test Sheet Material
AluminumCold-rolled Steel
Installation
(lbs)
Retainer
Push-out
(lbs)
Installation
(lbs)
Retainer
Push-out
(lbs)
440SS24002403000300
STL255
632SS27002753500350
STL295
832SS29003003800400
STL340
1032SS30004004000500
STL420
2520SS35004005000600
STL510

Performance data represents the average destructive result when all installation specifications are strictly followed. Variations in panel hole size, thickness, material, and installation methods will affect the loads. PENCOM strongly encourages testing in the application.

Drives

DriveDescription
TX6 - Lobe
PHCross Recess
SLSlotted