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Concealed Head Studs  CFHA-U

Self Clinching Fasteners  •  Studs for Sheet Metal
American Standard (Inches) & Metric Sizes
• 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" 0.250" 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

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