CFHC Concealed Head Studs

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Concealed Head Studs CFHC-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 CFHC-U

Metric Sizes: • Series CFHC-U

Series CFHC-U

Series CFHC-U / American Standard Sizes

• Sheet Hardness- HRB 70 / HB 125 or Less • Material- 300 Series Stainless Steel • Finish- Passivated per ASTM A380
							Series CFHC-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

CFHC-440-4-U

4-40

0.071"

0.250"

0.205"

0.171"

0.093"

0.172"

0.075"

0.156"

0.135"

M63540/4-1

CFHC-632-4-U

6-32

0.071"

0.250"

0.212"

0.093"

0.213"

0.075"

0.188"

0.160"

M63540/4-6

CFHC-832-4-U

8-32

0.071"

0.250"

0.328"

0.289"

0.093"

0.290"

0.075"

0.219"

0.185"

M63540/4-12

CFHC-440-6-U

4-40

0.071"

0.375"

0.205"

0.171"

0.093"

0.172"

0.075"

0.156"

0.135"

M63540/4-2

CFHC-632-6-U

6-32

0.071"

0.375"

0.250"

0.212"

0.093"

0.213"

0.075"

0.188"

0.160"

M63540/4-7

CFHC-832-6-U

8-32

0.071"

0.375"

0.328"

0.289"

0.093"

0.290"

0.075"

0.219"

0.185"

M63540/4-13

CFHC-032-6-U

10-32

0.071"

0.375"

0.350"

0.311"

0.093"

0.312"

0.075"

0.250"

0.210"

M63540/4-23

CFHC-440-8-U

4-40

0.071"

0.500"

0.205"

0.171"

0.093"

0.172"

0.075"

0.156"

0.135"

M63540/4-3

CFHC-632-8-U

6-32

0.071"

0.500"

0.250"

0.212"

0.093"

0.213"

0.075"

0.188"

0.160"

M63540/4-8

CFHC-832-8-U

8-32

0.071"

0.500"

0.328"

0.289"

0.093"

0.290"

0.075"

0.219"

0.185"

M63540/4-14

CFHC-032-8-U

10-32

0.071"

0.500"

0.350"

0.311"

0.093"

0.312"

0.075"

0.250"

0.210"

M63540/4-24

CFHC-440-10-U

4-40

0.071"

0.625"

0.205"

0.171"

0.093"

0.172"

0.075"

0.156"

0.135"

M63540/4-4

CFHC-632-10-U

6-32

0.071"

0.625"

0.250"

0.212"

0.093"

0.213"

0.075"

0.188"

0.160"

M63540/4-9

CFHC-832-10-U

8-32

0.071"

0.625"

0.328"

0.289"

0.093"

0.290"

0.075"

0.219"

0.185"

M63540/4-15

CFHC-032-10-U

10-32

0.071"

0.625"

0.350"

0.311"

0.093"

0.312"

0.075"

0.250"

0.210"

M63540/4-25

CFHC-440-12-U

4-40

0.071"

0.750"

0.205"

0.171"

0.093"

0.172"

0.075"

0.156"

0.135"

M63540/4-5

CFHC-632-12-U

6-32

0.071"

0.750"

0.250"

0.212"

0.093"

0.213"

0.075"

0.188"

0.160"

M63540/4-10

CFHC-832-12-U

8-32

0.071"

0.750"

0.328"

0.289"

0.093"

0.290"

0.075"

0.219"

0.185"

M63540/4-16

CFHC-032-12-U

10-32

0.071"

0.750"

0.350"

0.311"

0.093"

0.312"

0.075"

0.250"

0.210"

M63540/4-26

CFHC-632-16-U

6-32

0.071"

1.000"

0.250"

0.212"

0.093"

0.213"

0.075"

0.188"

0.160"

M63540/4-11

CFHC-832-16-U

6-32

0.071"

1.000"

0.328"

0.289"

0.093"

0.290"

0.075"

0.219"

0.185"

M63540/4-17

CFHC-032-16-U

10-32

0.071"

1.000"

0.350"

0.311"

0.093"

0.312"

0.075"

0.250"

0.210"

M63540/4-27

Series CFHC-U / Metric Sizes

• Sheet Hardness- HRB 70 / HB 125 or Less • Material- 300 Series Stainless Steel • Finish- Passivated per ASTM A380
							Series CFHC-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

CFHC-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

CFHC-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

CFHC-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

CFHC-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

CFHC-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

CFHC-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

CFHC-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

CFHC-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

CFHC-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

CFHC-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

CFHC-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

CFHC-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

CFHC-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

CFHC-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

CFHC-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

CFHC-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

CFHC-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

CFHC-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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