CFHA Concealed Head Studs

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Concealed Head Studs CFHA-U

Self Clinching Fasteners • Studs for Sheet Metal
American Standard (Inches) & Metric Sizes

UNICORP Electronic Hardware Self-Clinching Fasteners - Concealed - Head Studs CHA, CFHA, CHC, CFHC

• Permanent mounting • Used in metal sheets as thin as 0.062"/ 1.60 mm • One side remains smooth
• Installed with hollow punch and solid anvil • Head pressed into blind, milled hole

American Standard Sizes: • Series CFHA-U

Metric Sizes: • Series CFHA-U

Series CFHA-U

Series CFHA-U / American Standard Sizes

• Sheet Hardness- HRB 50 / HB 82 or Less • Material- Aluminum • Finish- None
	Series CFHA-U American Standard Sizes (SAE)

Part
Number

Thread

"A"
Max.

"L"
Length

"E"

"C"
Max.

Min.
Sheet
Thickness

Blind
Mounting
Hole
Diameter

Min.
Depth
of Blind
Hole

Min.
Distance
to Edge

Max.
Hole in
Attached
Parts

Mil-Spec

CFHA-440-4-U

4-40

0.071"

0.250"

0.205"

0.171"

0.093"

0.172"

0.075"

0.156"

0.135"

N/A

CFHA-632-4-U

6-32

0.071"

0.250"

0.212"

0.093"

0.213"

0.075"

0.188"

0.160"

N/A

CFHA-832-4-U

8-32

0.071"

0.250"

0.328"

0.289"

0.093"

0.290"

0.075"

0.219"

0.185"

N/A

CFHA-440-6-U

4-40

0.071"

0.375"

0.205"

0.171"

0.093"

0.172"

0.075"

0.156"

0.135"

N/A

CFHA-632-6-U

6-32

0.071"

0.375"

0.250"

0.212"

0.093"

0.213"

0.075"

0.188"

0.160"

N/A

CFHA-832-6-U

8-32

0.071"

0.375"

0.328"

0.289"

0.093"

0.290"

0.075"

0.219"

0.185"

N/A

CFHA-032-6-U

10-32

0.071"

0.375"

0.350"

0.311"

0.093"

0.312"

0.075"

0.250"

0.210"

N/A

CFHA-440-8-U

4-40

0.071"

0.500"

0.205"

0.171"

0.093"

0.172"

0.075"

0.156"

0.135"

N/A

CFHA-632-8-U

6-32

0.071"

0.500"

0.250"

0.212"

0.093"

0.213"

0.075"

0.188"

0.160"

N/A

CFHA-832-8-U

8-32

0.071"

0.500"

0.328"

0.289"

0.093"

0.290"

0.075"

0.219"

0.185"

N/A

CFHA-032-8-U

10-32

0.071"

0.500"

0.350"

0.311"

0.093"

0.312"

0.075"

0.250"

0.210"

N/A

CFHA-440-10-U

4-40

0.071"

0.625"

0.205"

0.171"

0.093"

0.172"

0.075"

0.156"

0.135"

N/A

CFHA-632-10-U

6-32

0.071"

0.625"

0.250"

0.212"

0.093"

0.213"

0.075"

0.188"

0.160"

N/A

CFHA-832-10-U

8-32

0.071"

0.625"

0.328"

0.289"

0.093"

0.290"

0.075"

0.219"

0.185"

N/A

CFHA-032-10-U

10-32

0.071"

0.625"

0.350"

0.311"

0.093"

0.312"

0.075"

0.250"

0.210"

N/A

CFHA-440-12-U

4-40

0.071"

0.750"

0.205"

0.171"

0.093"

0.172"

0.075"

0.156"

0.135"

N/A

CFHA-632-12-U

6-32

0.071"

0.750"

0.250"

0.212"

0.093"

0.213"

0.075"

0.188"

0.160"

N/A

CFHA-832-12-U

8-32

0.071"

0.750"

0.328"

0.289"

0.093"

0.290"

0.075"

0.219"

0.185"

N/A

CFHA-032-12-U

10-32

0.071"

0.750"

0.350"

0.311"

0.093"

0.312"

0.075"

0.250"

0.210"

N/A

CFHA-632-16-U

6-32

0.071"

1.000"

0.250"

0.212"

0.093"

0.213"

0.075"

0.188"

0.160"

N/A

CFHA-832-16-U

6-32

0.071"

1.000"

0.328"

0.289"

0.093"

0.290"

0.075"

0.219"

0.185"

N/A

CFHA-032-16-U

10-32

0.071"

1.000"

0.350"

0.311"

0.093"

0.312"

0.075"

0.250"

0.210"

N/A

Series CFHA-U / Metric Sizes

• Sheet Hardness- HRB 50 / HB 82 or Less • Material- Aluminum • Finish- None
	Series CFHA-U Metric Sizes

Part
Number

Thread

"A"
Max.

"L"
Length

"E"

"C"
Max.

Min.
Sheet
Thickness

Blind
Mounting
Hole
Diameter

Min.
Depth
of Blind
Hole

Min.
Distance
to Edge

Max.
Hole in
Attached
Parts

Mil-Spec

CFHA-M3-6-U

M3 x 0.5

1.80
mm

6.00
mm

5.21
mm

4.35
mm

2.40
mm

4.37
mm

1.91
mm

4.00
mm

3.60
mm

N/A

CFHA-M4-6-U

M4 x 0.7

1.80
mm

6.00
mm

8.33
mm

7.35
mm

2.40
mm

7.37
mm

1.91
mm

5.60
mm

4.60
mm

N/A

CFHA-M3-8-U

M3 x 0.5

1.80
mm

8.00
mm

5.21
mm

4.35
mm

2.40
mm

4.37
mm

1.91
mm

4.00
mm

3.60
mm

N/A

CFHA-M4-8-U

M4 x 0.7

1.80
mm

8.00
mm

8.33
mm

7.35
mm

2.40
mm

7.37
mm

1.91
mm

5.60
mm

4.60
mm

N/A

CFHA-M3-10-U

M3 x 0.5

1.80
mm

10.00
mm

5.21
mm

4.35
mm

2.40
mm

4.37
mm

1.91
mm

4.00
mm

3.60
mm

N/A

CFHA-M4-10-U

M4 x 0.7

1.80
mm

10.00
mm

8.33
mm

7.35
mm

2.40
mm

7.37
mm

1.91
mm

5.60
mm

4.60
mm

N/A

CFHA-M5-10-U

M5 x 0.8

1.80
mm

10.00
mm

8.89
mm

7.90
mm

2.40
mm

7.93
mm

1.91
mm

6.40
mm

5.60
mm

N/A

CFHA-M3-12-U

M3 x 0.5

1.80
mm

12.00
mm

5.21
mm

4.35
mm

2.40
mm

4.37
mm

1.91
mm

4.00
mm

3.60
mm

N/A

CFHA-M4-12-U

M4 x 0.7

1.80
mm

12.00
mm

8.33
mm

7.35
mm

2.40
mm

7.37
mm

1.91
mm

5.60
mm

4.60
mm

N/A

CFHA-M5-12-U

M5 x 0.8

1.80
mm

12.00
mm

8.89
mm

7.90
mm

2.40
mm

7.93
mm

1.91
mm

6.40
mm

5.60
mm

N/A

CFHA-M3-16-U

M3 x 0.5

1.80
mm

16.00
mm

5.21
mm

4.35
mm

2.40
mm

4.37
mm

1.91
mm

4.00
mm

3.60
mm

N/A

CFHA-M4-16-U

M4 x 0.7

1.80
mm

16.00
mm

8.33
mm

7.35
mm

2.40
mm

7.37
mm

1.91
mm

5.60
mm

4.60
mm

N/A

CFHA-M5-16-U

M5 x 0.8

1.80
mm

16.00
mm

8.89
mm

7.90
mm

2.40
mm

7.93
mm

1.91
mm

6.40
mm

5.60
mm

N/A

CFHA-M3-20-U

M3 x 0.5

1.80
mm

20.00
mm

5.21
mm

4.35
mm

2.40
mm

4.37
mm

1.91
mm

4.00
mm

3.60
mm

N/A

CFHA-M4-20-U

M4 x 0.7

1.80
mm

20.00
mm

8.33
mm

7.35
mm

2.40
mm

7.37
mm

1.91
mm

5.60
mm

4.60
mm

N/A

CFHA-M5-20-U

M5 x 0.8

1.80
mm

20.00
mm

8.89
mm

7.90
mm

2.40
mm

7.93
mm

1.91
mm

6.40
mm

5.60
mm

N/A

CFHA-M4-25-U

M4 x 0.7

1.80
mm

25.00
mm

8.33
mm

7.35
mm

2.40
mm

7.37
mm

1.91
mm

5.60
mm

4.60
mm

N/A

CFHA-M5-25-U

M5 x 0.8

1.80
mm

25.00
mm

8.89
mm

7.90
mm

2.40
mm

7.93
mm

1.91
mm

6.40
mm

5.60
mm

N/A

UNICORP Electronic Hardware - Self Clinching Fasteners

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