CLS Standard Nuts

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Standard Nuts CLS-U, CLSS-U

Self Clinching Fasteners • Nuts For Sheet Metal
American Standard (Inches) & Metric Sizes

UNICORP Electronic Hardware Self-Clinching Fasteners - Standard Nuts S, SS, CLS, CLSS, SP, CLA

• Self-clinching • Used as load-bearing threads in stainless steel panels
• High push-out and torque resistance • Installed quickly and easily by squeezing

American Standard Sizes: • Series CLS-U, CLSS-U

Metric Sizes: • Series CLS-U, CLSS-U

Series CLS-U, CLSS-U

Series CLS-U, CLSS-U / American Standard Sizes

• Shape- Round • Sheet Hardness- HRB 70 / HB 125 or Less • Material- 300 Series Stainless Steel • Finish- Passivated per ASTM A380
	Series CLS-U, CLSS-U American Standard Sizes (SAE)

Part
Number

Thread

"A"
(Shank)
Max.

"T"
Head
Height

"E"
Head
Height

"C" Max.
Body
Diameter

Min.
Sheet
Thickness

Hole
Size in
Sheet

Min.
Distance
to Edge

Mil-Spec

CLS-256-0-U

2-56

0.030"

0.070"

0.250"

0.165"

0.030"

0.166"

0.190"

M45938/1-1C

CLS-256-1-U

2-56

0.038"

0.070"

0.250"

0.165"

0.040"

0.166"

0.190"

M45938/1-2C

CLS-256-2-U

2-56

0.054"

0.070"

0.250"

0.165"

0.056"

0.166"

0.190"

N/A

CLS-348-0-U

3-48

0.030"

0.070"

0.250"

0.165"

0.030"

0.166"

0.190"

N/A

CLS-348-1-U

3-48

0.038"

0.070"

0.250"

0.165"

0.040"

0.166"

0.190"

N/A

CLS-348-2-U

3-48

0.054"

0.070"

0.250"

0.165"

0.056"

0.166"

0.190"

N/A

CLS-440-0-U

4-40

0.030"

0.070"

0.250"

0.165"

0.030"

0.166"

0.190"

M45938/1-3C

CLS-440-1-U

4-40

0.038"

0.070"

0.250"

0.165"

0.040"

0.166"

0.190"

M45938/1-4C

CLS-440-2-U

4-40

0.054"

0.070"

0.250"

0.165"

0.056"

0.166"

0.190"

M45938/1-5C

CLS-440-3-U

4-40

0.087"

0.070"

0.250"

0.165"

0.090"

0.166"

0.190"

N/A

CLS-632-0-U

6-32

0.030"

0.070"

0.280"

0.187"

0.030"

0.188"

0.220"

N/A

CLS-632-1-U

6-32

0.038"

0.070"

0.280"

0.187"

0.040"

0.188"

0.220"

M45938/1-8C

CLS-632-2-U

6-32

0.054"

0.070"

0.280"

0.187"

0.056"

0.188"

0.220"

M45938/1-9C

CLS-632-3-U

6-32

0.087"

0.070"

0.280"

0.187"

0.090"

0.188"

0.220"

N/A

CLS-832-0-U

8-32

0.030"

0.090"

0.310"

0.212"

0.030"

0.213"

0.270"

N/A

CLS-832-1-U

8-32

0.038"

0.090"

0.310"

0.212"

0.040"

0.213"

0.270"

M45938/1-12C

CLS-832-2-U

8-32

0.054"

0.090"

0.310"

0.212"

0.056"

0.213"

0.270"

M45938/1-13C

CLS-832-3-U

8-32

0.087"

0.090"

0.310"

0.212"

0.090"

0.213"

0.270"

N/A

CLSS-024-0-U

10-24

0.030"

0.090"

0.340"

0.249"

0.030"

0.250"

0.280"

N/A

CLSS-024-1-U

10-24

0.038"

0.090"

0.340"

0.249"

0.040"

0.250"

0.280"

N/A

CLSS-024-2-U

10-24

0.054"

0.090"

0.340"

0.249"

0.056"

0.250"

0.280"

N/A

CLSS-024-3-U

10-24

0.087"

0.090"

0.340"

0.249"

0.090"

0.250"

0.280"

N/A

CLSS-032-0-U

10-32

0.030"

0.090"

0.340"

0.249"

0.030"

0.250"

0.280"

N/A

CLSS-032-1-U

10-32

0.038"

0.090"

0.340"

0.249"

0.040"

0.250"

0.280"

N/A

CLSS-032-2-U

10-32

0.054"

0.090"

0.340"

0.249"

0.056"

0.250"

0.280"

M45938/1-16C

CLSS-032-3-U

10-32

0.087"

0.090"

0.340"

0.249"

0.090"

0.250"

0.280"

M45938/1-17C

CLS-1224-1-U

12-24

0.038"

0.130"

0.370"

0.276"

0.040"

0.277"

0.310"

N/A

CLS-1224-2-U

12-24

0.054"

0.130"

0.370"

0.276"

0.056"

0.277"

0.310"

N/A

CLS-1224-3-U

12-24

0.087"

0.130"

0.370"

0.276"

0.090"

0.277"

0.310"

N/A

CLS-0420-0-U

1/4-20

0.045"

0.170"

0.440"

0.343"

0.047"

0.344"

0.340"

N/A

CLS-0420-1-U

1/4-20

0.054"

0.170"

0.440"

0.343"

0.056"

0.344"

0.340"

M45938/1-27C

CLS-0420-2-U

1/4-20

0.087"

0.170"

0.440"

0.343"

0.090"

0.344"

0.340"

M45938/1-28C

CLS-0420-3-U

1/4-20

0.120"

0.170"

0.440"

0.343"

0.125"

0.344"

0.340"

M45938/1-29C

CLS-0428-1-U

1/4-28

0.054"

0.170"

0.440"

0.343"

0.056"

0.344"

0.340"

N/A

CLS-0428-2-U

1/4-28

0.087"

0.170"

0.440"

0.343"

0.090"

0.344"

0.340"

M45938/1-19C

CLS-0428-3-U

1/4-28

0.120"

0.170"

0.440"

0.343"

0.125"

0.344"

0.340"

M45938/1-20C

CLS-0518-1-U

5/16-18

0.054"

0.230"

0.500"

0.412"

0.056"

0.413"

0.380"

N/A

CLS-0518-2-U

5/16-18

0.087"

0.230"

0.500"

0.412"

0.090"

0.413"

0.380"

N/A

CLS-0518-3-U

5/16-18

0.120"

0.230"

0.500"

0.412"

0.125"

0.413"

0.380"

N/A

CLS-0524-1-U

5/16-24

0.054"

0.230"

0.500"

0.412"

0.056"

0.413"

0.380"

N/A

CLS-0524-2-U

5/16-24

0.087"

0.230"

0.500"

0.412"

0.090"

0.413"

0.380"

M45938/1-21C

CLS-0524-3-U

5/16-24

0.120"

0.230"

0.500"

0.412"

0.125"

0.413"

0.380"

M45938/1-22C

CLS-0616-1-U

3/8-16

0.087"

0.270"

0.560"

0.499"

0.090"

0.500"

0.440"

N/A

CLS-0616-2-U

3/8-16

0.120"

0.270"

0.560"

0.499"

0.125"

0.500"

0.440"

N/A

CLS-0616-3-U

3/8-16

0.235"

0.270"

0.560"

0.499"

0.250"

0.500"

0.440"

N/A

CLS-0624-1-U

3/8-24

0.087"

0.270"

0.560"

0.499"

0.090"

0.500"

0.440"

N/A

CLS-0624-2-U

3/8-24

0.120"

0.270"

0.560"

0.499"

0.125"

0.500"

0.440"

M45938/1-23C

CLS-0624-3-U

3/8-24

0.235"

0.270"

0.560"

0.499"

0.250"

0.500"

0.440"

M45938/1-24C

CLS-0813-1-U

1/2-13

0.120"

0.360"

0.810"

0.655"

0.125"

0.656"

0.630"

N/A

CLS-0813-2-U

1/2-13

0.235"

0.360"

0.810"

0.655"

0.250"

0.656"

0.630"

N/A

CLS-0820-1-U

1/2-20

0.120"

0.360"

0.810"

0.655"

0.125"

0.656"

0.630"

M45938/1-25C

CLS-0820-2-U

1/2-20

0.235"

0.360"

0.810"

0.655"

0.250"

0.656"

0.630"

M45938/1-26C

Series CLS-U, CLSS-U / Metric Sizes

• Shape- Round • Sheet Hardness- HRB 70 / HB 125 or Less • Material- 300 Series Stainless Steel • Finish- Passivated per ASTM A380
	Series CLS-U, CLSS-U Metric Sizes

Part
Number

Thread

"A"
(Shank)
Max.

"T"
Head
Height

"E"
Head
Height

"C" Max.
Body
Diameter

Min.
Sheet
Thickness

Hole
Size in
Sheet

Min.
Distance
to Edge

Mil-Spec

CLS-M2-0-U

M2 x 0.4

0.77
mm

1.50
mm

6.35
mm

4.2
mm

0.80
mm

4.22
mm

4.80
mm

N/A

CLS-M2-1-U

M2 x 0.4

0.97
mm

1.50
mm

6.35
mm

4.2
mm

1.00
mm

4.22
mm

4.80
mm

N/A

CLS-M2-2-U

M2 x 0.4

1.38
mm

1.50
mm

6.35
mm

4.2
mm

1.40
mm

4.22
mm

4.80
mm

N/A

CLS-M2.5-0-U

M2.5 x 0.45

0.77
mm

1.50
mm

6.35
mm

4.2
mm

0.80
mm

4.22
mm

4.80
mm

N/A

CLS-M2.5-1-U

M2.5 x 0.45

0.97
mm

1.50
mm

6.35
mm

4.2
mm

1.00
mm

4.22
mm

4.80
mm

N/A

CLS-M2.5-2-U

M2.5 x 0.45

1.38
mm

1.50
mm

6.35
mm

4.2
mm

1.40
mm

4.22
mm

4.80
mm

N/A

CLS-M3-0-U

M3 x 0.5

0.77
mm

1.50
mm

6.35
mm

4.2
mm

0.80
mm

4.22
mm

4.80
mm

N/A

CLS-M3-1-U

M3 x 0.5

0.97
mm

1.50
mm

6.35
mm

4.2
mm

1.00
mm

4.22
mm

4.80
mm

N/A

CLS-M3-2-U

M3 x 0.5

1.38
mm

1.50
mm

6.35
mm

4.2
mm

1.40
mm

4.22
mm

4.80
mm

N/A

CLS-M3.5-0-U

M3.5 x 0.6

0.77
mm

1.50
mm

7.11
mm

4.73
mm

0.80
mm

4.75
mm

5.60
mm

N/A

CLS-M3.5-1-U

M3.5 x 0.6

0.97
mm

1.50
mm

7.11
mm

4.73
mm

1.00
mm

4.75
mm

5.60
mm

N/A

CLS-M3.5-2-U

M3.5 x 0.6

1.38
mm

1.50
mm

7.11
mm

4.73
mm

1.40
mm

4.75
mm

5.60
mm

N/A

CLS-M4-0-U

M4 x 0.7

0.77
mm

2.00
mm

7.87
mm

5.38
mm

0.80
mm

5.41
mm

6.90
mm

N/A

CLS-M4-1-U

M4 x 0.7

0.97
mm

2.00
mm

7.87
mm

5.38
mm

1.00
mm

5.41
mm

6.90
mm

N/A

CLS-M4-2-U

M4 x 0.7

1.38
mm

2.00
mm

7.87
mm

5.38
mm

1.40
mm

5.41
mm

6.90
mm

N/A

CLSS-M5-0-U

M5 x 0.8

0.77
mm

2.00
mm

8.64
mm

6.33
mm

0.80
mm

6.35
mm

7.10
mm

N/A

CLSS-M5-1-U

M5 x 0.8

0.97
mm

2.00
mm

8.64
mm

6.33
mm

1.00
mm

6.35
mm

7.10
mm

N/A

CLSS-M5-2-U

M5 x 0.8

1.38
mm

2.00
mm

8.64
mm

6.33
mm

1.40
mm

6.35
mm

7.10
mm

N/A

CLS-M6-00-U

M6 x 1.0

0.89
mm

4.08
mm

11.18
mm

8.73
mm

0.92
mm

8.75
mm

8.60
mm

N/A

CLS-M6-0-U

M6 x 1.0

1.15
mm

4.08
mm

11.18
mm

8.73
mm

1.20
mm

8.75
mm

8.60
mm

N/A

CLS-M6-1-U

M6 x 1.0

1.38
mm

4.08
mm

11.18
mm

8.73
mm

1.40
mm

8.75
mm

8.60
mm

N/A

CLS-M6-2-U

M6 x 1.0

2.21
mm

4.08
mm

11.18
mm

8.73
mm

2.29
mm

8.75
mm

8.60
mm

N/A

CLS-M8-1-U

M8 x 1.25

1.38
mm

5.47
mm

12.70
mm

10.47
mm

1.40
mm

10.50
mm

9.70
mm

N/A

CLS-M8-2-U

M8 x 1.25

2.21
mm

5.47
mm

12.70
mm

10.47
mm

2.29
mm

10.50
mm

9.70
mm

N/A

CLS-M10-1-U

M10 x 1.5

2.21
mm

7.48
mm

17.35
mm

13.97
mm

2.31
mm

14.00
mm

13.50
mm

N/A

CLS-M10-2-U

M10 x 1.5

3.05
mm

7.48
mm

17.35
mm

13.97
mm

3.18
mm

14.00
mm

13.50
mm

N/A

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