3D CAD Models available. Contact a PENCOM Account Representative to request.

Part Description Example

  • NCCTMaterial
    Code
  • 440Thread
    Code
  • .030Shank
    Length
  • ZFinish
    Code
Request A Quote

*Contact a PENCOM Account Representative for the part number based on the description.

Features

  • Provide load-bearing threads in thin sheets.
  • Available in a broad selection of inch and metric thread sizes.
  • Self-clinching design provides quick and permanent installation in a variety of aluminum and cold-rolled steel sheet thicknesses.
  • Choice of RoHS-compliant materials and finishes.
nc_preview_image
Sheet metal displaced by the knurled band during installation flows into the undercut creating a mechanical lock with the sheet metal providing high push-out and torque-out resistance.

General - Material Codes CT, ST & SS

All dimensions in inches
ThreadThread
Code
SheetA
Shank
Length
Max.
C
Max.
E
±.010
T
±.010
Minimum
Thickness
Hole Size
+.003
-.000
Minimum
Distance
Hole Center
to Edge
2–56256.030.166.190.030.165.250.070
.040.038
.056.054
3–48348.030.166.190.030.165.250.070
.040.038
.056.054
4–40440.030.166.190.030.165.250.070
.040.038
.056.054
.090.087
6–32632.030.1875.220.030.187.280.070
.040.038
.056.054
.090.087
8–32832.030.213.270.030.212.310.090
.040.038
.056.054
.090.087
10–241024.030.250.280.030.249.340.090
.040.038
.056.054
.090.087
10–321032.030.250.280.030.249.340.090
.040.038
.056.054
.090.087
12–241224.040.277.310.038.276.370.130
.056.054
.090.087
1/4–202520.047.344.340.045.343.440.170
.056.054
.090.087
.125.120
1/4–282528.047.344.340.045.343.440.170
.056.054
.090.087
.125.120
5/16–183118.056.413.380.054.412.500.230
.090.087
.125.120
5/16–243124.056.413.380.054.412.500.230
.090.087
.125.120
3/8–163716.090.500.440.087.499.560.270
.125.120
.250.235
3/8–243724.090.500.440.087.499.560.270
.125.120
.250.235
7/16–204320.092.562.562.087.561.687.311
1/2–135013.125.656.630.120.655.810.360
.250.235
1/2–20
5020.125.656.630.120.655.810.360
.250.235
  1. For best performance, use the maximum shank length available for the application sheet thickness.
  2. Custom sizes available by request.

General - Material Code AL

All dimensions in inches
ThreadThread
Code
SheetA
Shank
Length
Max.
C
Max.
E
±.010
T
±.010
Minimum
Thickness
Hole Size
+.003
-.000
Minimum
Distance
Hole Center
to Edge
2-56256.040.166.190.038.165.250.070
.056.054
4-40440.040.1875.220.038.187.250.090
.056.054
6-32632.040.213.270.038.212.280.090
.056.054
8-32832.040.234.280.038.233.310.130
.056.054
10-241024.040.296.310.038.295.370.160
.056.054
10-321032.040.296.310.038.295.370.160
.056.054
1/4-202520.056.344.340.054.343.440.170
.091.087
.125.120
  1. For best performance, use the maximum shank length available for the application sheet thickness.
  2. Custom sizes available by request.

Material and Finish

Material
Code
Material DescriptionFinish
Code
Finish DescriptionFor Use in Sheet Hardness
HRB
80 Max.
HRB
70 Max.
HRB
50 Max.
CT (1)Heat Treated Carbon SteelZZinc (SC1) with Type III Clear Chromate per ASTM B 633
ST (1)Heat Treated Carbon SteelZZinc (SC1) with Type III Clear Chromate per ASTM B 633
SS300–Series Stainless SteelPPassivated and/or tested per ASTM A 967
ALAluminumPLNPlain
  1. Use CT material code for nuts with (E) body diameters .250” thru .440” and 6.35mm thru 11.18mm; and ST material code for nuts with (E) body diameters .500” thru .810”, 12.70mm, 17.35mm and 20.57mm.
  2. Custom materials and finishes available by request.

Installation

  1. Prepare correct sized mounting hole in sheet away from bends or other highly cold-worked areas. Do not deburr hole edges.
  2. Insert nut into anvil recess or over anvil pin, depending on anvil type required. Place sheet hole over the nut shank as shown with hole punch side of sheet against the nut.
  3. Squeeze the sheet and nut between parallel anvil and punch surfaces. Use only enough pressure to seat the nut shoulder flush with the sheet. Anvils and punches may be ordered using the part numbers shown in the tables below; or made from hardened tool steel.
  4. In the application install screw from the shank side of the fastener so that the head side of the nut is drawn toward the sheet.
NC – Self-Clinching Installation Image

Anvil and Punch Dimensions - Material Codes CT, ST & SS

All dimensions in inches
Thread
Code
Anvil DimensionsAnvil
Part
Number
Punch
Part
Number
A
±.002
P
+.005
256 / 348 / 440.267.045TL1378TL1695
632.298.045TL1379TL1695
832.330.070TL1380TL1695
1024 / 1032.361.070TL1381TL1695
1224.387.080TL1382TL1695
2520 / 2528.454.150TL1383TL1695
3118 / 3124.517.200TL1384TL1695
3716 / 3724.280.250TL1385TL1695
4320.338.295TL1386TL1696
5013 / 5020.375.345TL1387TL1696

Anvil and Punch Dimensions - Material Code AL

All dimensions in inches
Thread
Code
Anvil DimensionsAnvil
Part
Number
Punch
Part
Number
A
±.002
P
±.005
256 / 440.267.045TL1378TL1695
632.298.045TL1379TL1695
832.330.070TL1380TL1695
1024 / 1032.392.140TL1684TL1695
2520.454.150TL1383TL1695

Performance - Material Codes CT, ST & SS

Thread
Code
A
Shank
Length
Max.
Test
Sheet
Material
Installation
(lbs)
Push-out
(lbs)
Torque-out
(in-lbs)
256
348
440
.0305052-H34
Aluminum
1500–2000638
.0389010
.05417013
.08717013
.030Cold-rolled
Steel
2500–350010513
.03812515
.05423018
.08723018
632.0305052-H34
Aluminum
2500–30006316
.0389517
.05419022
.08719022
.030Cold-rolled
Steel
3000–600011016
.03813020
.05427528
.08727528
832.0305052-H34
Aluminum
2500–30006821
.03810523
.05422035
.08722035
.030Cold-rolled
Steel
4000–600011026
.03814535
.05428545
.08728545
1024
1032
.0305052-H34
Aluminum
2500–35006826
.03811032
.05419050
.08722550
.030Cold-rolled
Steel
4000–650012032
.03818040
.05432060
.08732060
1224.0385052-H34
Aluminum
2500–650012063
.05428570
.08728570
.038Cold-rolled
Steel
5000–650020074
.05435080
.08735080
2520
2528
.0455052-H34
Aluminum
4000–700022070
.05436090
.087360125
.120360125
.045Cold-rolled
Steel
6000–8000315115
.054400150
.087400150
.120400150
3118
3124
.0545052-H34
Aluminum
4000–7000380120
.087380160
.120380160
.054Cold-rolled
Steel
6000–8000420165
.087420180
.120420180
3716
3724
.0875052-H34
Aluminum
5000–8000400270
.120400270
.235400270
.087Cold-rolled
Steel
7000–11000460320
.120460320
.235460320
4320.087Cold-rolled
Steel
9000–13000450340
5013
5020
.1205052-H34
Aluminum
7000–9000475350
.235475350
.120Cold-rolled
Steel
10000–150001050735
.2351050735
  1. Performance data are reference averages based on commonly reported industry values when all installation specifications are strictly followed. Variations in panel hole size, thickness, material, and installation method will affect the loads. PENCOM strongly encourages testing in the application.

Performance - Material Code AL

Thread
Code
A
Shank
Length
Max.
Test
Sheet
Material
Installation
(lbs)
Push-out
(lbs)
Torque-out
(in-lbs)
440.0385052-H34
Aluminum
800-15001006
.054800-15001209
632.0385052-H34
Aluminum
1000-150011021
.0541200-170015524
832.0385052-H34
Aluminum
1000-150012027
.0541300-180017029
1024
1032
.0385052-H34
Aluminum
1700-220013034
.0542600-310020050
  1. Performance data are reference averages based on commonly reported industry values when all installation specifications are strictly followed. Variations in panel hole size, thickness, material, and installation method will affect the loads. PENCOM strongly encourages testing in the application.

General - Material Codes CT, ST & SS

All dimensions in millimeters
ThreadThread
Code
SheetA
Shank
Length
Max.
C
Max.
E
±0.25
T
±0.25
Minimum
Thickness
Hole Size
+0.08
-0.00
Minimum
Distance
Hole Center
to Edge
M2 x 0.4M20.804.224.800.774.206.351.50
1.000.97
1.401.38
M2.5 x 0.45M2.50.804.224.800.774.206.351.50
1.000.97
1.401.38
M3 x 0.5M30.804.224.800.774.206.351.50
1.000.97
1.401.38
M3.5 x 0.6M3.50.804.755.600.774.737.111.50
1.000.97
1.401.38
M4 x 0.7M40.805.416.900.775.387.872.00
1.000.97
1.401.38
M5 x 0.8M50.806.357.100.776.338.642.00
1.000.97
1.401.38
M6 x 1.0M60.928.758.600.898.7311.184.08
1.201.15
1.401.38
2.292.21
M8 x 1.25M81.4010.509.701.3810.4712.705.47
2.292.21
M10 x 1.5M102.2914.0013.502.2113.9717.357.48
3.183.05
M12 x 1.75M123.1817.0016.003.0516.9520.578.50
  1. For best performance, use the maximum shank length available for the application sheet thickness.
  2. Custom sizes available by request.

General - Material Code AL

All dimensions in millimeters
ThreadThread
Code
SheetA
Shank
Length
Max.
C
Max.
E
±0.25
T
±0.25
Minimum
Thickness
Hole Size
+0.08
-0.00
Minimum
Distance
Hole Center
to Edge
M2 x 0.4M21.004.224.800.984.206.351.50
1.401.38
M3 x 0.5M31.004.755.600.984.736.352.00
1.401.38
M3.5 x 0.6M3.51.005.416.900.985.387.112.00
1.401.38
M4 x 0.7M41.005.947.100.985.927.803.00
1.401.38
M5 x 0.8M51.007.527.900.987.499.403.80
1.401.38
M6 x 1.0M61.408.758.601.388.7311.184.08
2.302.21
  1. For best performance, use the maximum shank length available for the application sheet thickness.
  2. Custom sizes available by request.

Material and Finish

Material
Code
Material DescriptionFinish
Code
Finish DescriptionFor Use in Sheet Hardness
HRB
80 Max.
HRB
70 Max.
HRB
50 Max.
CT(1)Heat Treated Carbon SteelZZinc (SC1) with Type III Clear Chromate per ASTM B 633
ST (1)Heat Treated Carbon SteelZZinc (SC1) with Type III Clear Chromate per ASTM B 633
SS300 –Series Stainless SteelPPassivated and/or tested per ASTM A 967
ALAluminumPLNPlain
  1. Use CT material code for nuts with (E) body diameters .250” thru .440” and 6.35mm thru 11.18mm; and ST material code for nuts with (E) body diameters .500” thru .810”, 12.70mm, 17.35mm and 20.57mm.
  2. Custom materials and finishes available by request.

Installation

  1. Prepare correct sized mounting hole in sheet away from bends or other highly cold-worked areas. Do not deburr hole edges.
  2. Insert nut into anvil recess or over anvil pin, depending on anvil type required. Place sheet hole over the nut shank as shown with hole punch side of sheet against the nut.
  3. Squeeze the sheet and nut between parallel anvil and punch surfaces. Use only enough pressure to seat the nut shoulder flush with the sheet. Anvils and punches may be ordered using the part numbers shown in the tables below; or made from hardened tool steel.
  4. In the application install screw from the shank side of the fastener so that the head side of the nut is drawn toward the sheet.
NC – Self-Clinching Installation Image

Anvil and Punch Dimensions - Material Codes CT, ST & SS

All dimensions in millimeters
Thread
Code
Anvil DimensionsAnvil
Part
Number
Punch
Part
Number
A
±0.05
P
±0.13
M2 / M2.5 / M36.781.14TL1378TL1695
M3.57.571.14TL1379TL1695
M48.381.78TL1380TL1695
M59.171.78TL1381TL1695
M611.533.81TL1383TL1695
M813.135.08TL1384TL1695
M107.626.35TL1388TL1696
M129.538.76TL1387TL1696

Anvil and Punch Dimensions - Material Code AL

All dimensions in millimeters
Thread
Code
Anvil DimensionsAnvil
Part
Number
Punch
Part
Number
A
±0.05
P
±0.13
M2 / M36.781.14TL1378TL1695
M3.57.571.14TL1379TL1695
M48.381.78TL1380TL1695
M59.963.56TL1684TL1695
M611.533.81TL1383TL1695

Performance - Material Code CT, ST & SS

Thread
Code
A
Shank
Length
Max.
Test
Sheet
Material
Installation
(kN)
Push-out
(N)
Torque-out
(N-m)
M2
M2.5
M3
0.775052-H34
Aluminum
6.7–8.92800.90
0.974001.13
1.387501.47
0.77Cold-rolled
Steel
11.2–15.64701.47
0.975501.70
1.3810102.03
M3.50.775052-H34
Aluminum
11.2–13.52801.80
0.974001.92
1.388402.50
0.77Cold-rolled
Steel
13.4–26.74801.80
0.975702.30
1.3812102.30
M40.775052-H34
Aluminum
11.2–13.43002.37
0.974702.60
1.389704.00
0.77Cold-rolled
Steel
18.0 –27.04902.95
0.976454.00
1.3812505.10
M50.775052-H34
Aluminum
11.2–15.63003.00
0.974803.60
1.388455.70
0.77Cold-rolled
Steel
18.0–28.95303.60
0.978004.50
1.3811126.80
M60.895052-H34
Aluminum
18.0–32.07506.50
1.159707.90
1.38158010.2
2.21158014.1
0.89Cold-rolled
Steel
27.0–36.090010.0
1.15138013.0
1.38176017.0
2.21176017.0
M81.385052-H34
Aluminum
18.0–32.0157013.6
2.21157018.1
1.38Cold-rolled
Steel
27.0 –36.0187018.7
2.21187020.3
M102.215052-H34
Aluminum
22.0–36.0176032.7
3.05176032.7
2.21Cold-rolled
Steel
32.0–50.0202036.2
3.05202036.2
M123.055052-H34
Aluminum
31.0–40.0211339.5
3.05Cold-rolled
Steel
44.0–67.0467083.1
  1. Performance data are reference averages based on commonly reported industry values when all installation specifications are strictly followed. Variations in panel hole size, thickness, material, and installation method will affect the loads. PENCOM strongly encourages testing in the application.

Performance - Material Code AL

Thread
Code
A
Shank
Length
Max.
Test
Sheet
Material
Installation
(kN)
Push-out
(N)
Torque-out
(N-m)
M21.385052-H34
Aluminum
3.56-6.675000.40
M30.985052-H34
Aluminum
3.56-6.674450.68
1.383.56-6.675341.02
M40.985052-H34
Aluminum
4.45-6.675343.05
1.385.78-8.017563.27
  1. Performance data are reference averages based on commonly reported industry values when all installation specifications are strictly followed. Variations in panel hole size, thickness, material, and installation method will affect the loads. PENCOM strongly encourages testing in the application.