FH4 Threaded Flush Head Studs

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Threaded Flush-Head Studs FH4-U

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

UNICORP Electronic Hardware Self-Clinching Fasteners - Threaded Flush - Head Studs FH, FHS, FHA, FH4, FHP

• Self-clinching • Installed quickly and easily by squeezing into place • Creates flush-head assembly
• Stud locked into place • Minimum sheet thickness of 0.040" /1.00 mm

American Standard Sizes: • Series FH4-U

Metric Sizes: • Series FH4-U

Series FH4-U

Series FH4-U / American Standard Sizes

• Head Shape- Round • Sheet Hardness- HRB 92 / HB 195 or Less • Material- 400 Series Stainless Steel • Finish- Passivated per ASTM A380
	Series FH4-U American Standard Sizes (SAE)

Part
Number

Thread

"S"
Max.

"H"
Head
Diameter

"L"
Overall
Length

Min.
Sheet
Thickness

Hole
Size in
Sheet

Max.
Hole in
Attached
Parts

Min.
Distance
to Edge

Mil-Spec

FH4-440-4-U

4-40

0.085"

0.176"

0.250"

0.040" - 0.095"

0.111"

0.135"

0.219"

N/A

FH4-440-5-U

4-40

0.085"

0.176"

0.312"

0.040" - 0.095"

0.111"

0.135"

0.219"

N/A

FH4-440-6-U

4-40

0.085"

0.176"

0.375"

0.040" - 0.095"

0.111"

0.135"

0.219"

N/A

FH4-440-8-U

4-40

0.085"

0.176"

0.500"

0.040" - 0.095"

0.111"

0.135"

0.219"

N/A

FH4-440-10-U

4-40

0.085"

0.176"

0.625"

0.040" - 0.095"

0.111"

0.135"

0.219"

N/A

FH4-440-12-U

4-40

0.085"

0.176"

0.750"

0.040" - 0.095"

0.111"

0.135"

0.219"

N/A

FH4-440-14-U

4-40

0.085"

0.176"

0.875"

0.040" - 0.095"

0.111"

0.135"

0.219"

N/A

FH4-440-16-U

4-40

0.085"

0.176"

1.000"

0.040" - 0.095"

0.111"

0.135"

0.219"

N/A

FH4-632-4-U

6-32

0.090"

0.206"

0.250"

0.040" - 0.095"

0.137"

0.160"

0.250"

N/A

FH4-632-5-U

6-32

0.090"

0.206"

0.312"

0.040" - 0.095"

0.137"

0.160"

0.250"

N/A

FH4-632-6-U

6-32

0.090"

0.206"

0.375"

0.040" - 0.095"

0.137"

0.160"

0.250"

N/A

FH4-632-8-U

6-32

0.090"

0.206"

0.500"

0.040" - 0.095"

0.137"

0.160"

0.250"

N/A

FH4-632-10-U

6-32

0.090"

0.206"

0.625"

0.040" - 0.095"

0.137"

0.160"

0.250"

N/A

FH4-632-12-U

6-32

0.090"

0.206"

0.750"

0.040" - 0.095"

0.137"

0.160"

0.250"

N/A

FH4-632-14-U

6-32

0.090"

0.206"

0.875"

0.040" - 0.095"

0.137"

0.160"

0.250"

N/A

FH4-632-16-U

6-32

0.090"

0.206"

1.000"

0.040" - 0.095"

0.137"

0.160"

0.250"

N/A

FH4-632-20-U

6-32

0.090"

0.206"

1.250"

0.040" - 0.095"

0.137"

0.160"

0.250"

N/A

FH4-632-24-U

6-32

0.090"

0.206"

1.500"

0.040" - 0.095"

0.137"

0.160"

0.250"

N/A

FH4-832-4-U

8-32

0.090"

0.237"

0.250"

0.040" - 0.095"

0.163"

0.185"

0.281"

N/A

FH4-832-5-U

8-32

0.090"

0.237"

0.312"

0.040" - 0.095"

0.163"

0.185"

0.281"

N/A

FH4-832-6-U

8-32

0.090"

0.237"

0.375"

0.040" - 0.095"

0.163"

0.185"

0.281"

N/A

FH4-832-8-U

8-32

0.090"

0.237"

0.500"

0.040" - 0.095"

0.163"

0.185"

0.281"

N/A

FH4-832-10-U

8-32

0.090"

0.237"

0.625"

0.040" - 0.095"

0.163"

0.185"

0.281"

N/A

FH4-832-12-U

8-32

0.090"

0.237"

0.750"

0.040" - 0.095"

0.163"

0.185"

0.281"

N/A

FH4-832-14-U

8-32

0.090"

0.237"

0.875"

0.040" - 0.095"

0.163"

0.185"

0.281"

N/A

FH4-832-16-U

8-32

0.090"

0.237"

1.000"

0.040" - 0.095"

0.163"

0.185"

0.281"

N/A

FH4-832-20-U

8-32

0.090"

0.237"

1.250"

0.040" - 0.095"

0.163"

0.185"

0.281"

N/A

FH4-832-24-U

8-32

0.090"

0.237"

1.500"

0.040" - 0.095"

0.163"

0.185"

0.281"

N/A

FH4-032-5-U

10-32

0.100"

0.256"

0.312"

0.040" - 0.095"

0.189"

0.210"

0.281"

N/A

FH4-032-6-U

10-32

0.100"

0.256"

0.375"

0.040" - 0.095"

0.189"

0.210"

0.281"

N/A

FH4-032-8-U

10-32

0.100"

0.256"

0.500"

0.040" - 0.095"

0.189"

0.210"

0.281"

N/A

FH4-032-10-U

10-32

0.100"

0.256"

0.625"

0.040" - 0.095"

0.189"

0.210"

0.281"

N/A

FH4-032-12-U

10-32

0.100"

0.256"

0.750"

0.040" - 0.095"

0.189"

0.210"

0.281"

N/A

FH4-032-14-U

10-32

0.100"

0.256"

0.875"

0.040" - 0.095"

0.189"

0.210"

0.281"

N/A

FH4-032-16-U

10-32

0.100"

0.256"

1.000"

0.040" - 0.095"

0.189"

0.210"

0.281"

N/A

FH4-032-20-U

10-32

0.100"

0.256"

1.250"

0.040" - 0.095"

0.189"

0.210"

0.281"

N/A

FH4-032-24-U

10-32

0.100"

0.256"

1.500"

0.040" - 0.095"

0.189"

0.210"

0.281"

N/A

FH4-0420-6-U

1/4-20

0.135"

0.337"

0.375"

0.062" - 0.117"

0.249"

0.270"

0.312"

N/A

FH4-0420-8-U

1/4-20

0.135"

0.337"

0.500"

0.062" - 0.117"

0.249"

0.270"

0.312"

N/A

FH4-0420-10-U

1/4-20

0.135"

0.337"

0.625"

0.062" - 0.117"

0.249"

0.270"

0.312"

N/A

FH4-0420-12-U

1/4-20

0.135"

0.337"

0.750"

0.062" - 0.117"

0.249"

0.270"

0.312"

N/A

FH4-0420-14-U

1/4-20

0.135"

0.337"

0.875"

0.062" - 0.117"

0.249"

0.270"

0.312"

N/A

FH4-0420-16-U

1/4-20

0.135"

0.337"

1.000"

0.062" - 0.117"

0.249"

0.270"

0.312"

N/A

FH4-0420-18-U

1/4-20

0.135"

0.337"

1.125"

0.062" - 0.117"

0.249"

0.270"

0.312"

N/A

FH4-0420-20-U

1/4-20

0.135"

0.337"

1.250"

0.062" - 0.117"

0.249"

0.270"

0.312"

N/A

FH4-0420-24-U

1/4-20

0.135"

0.337"

1.500"

0.062" - 0.117"

0.249"

0.270"

0.312"

N/A

Series FH4-U / Metric Sizes

• Head Shape- Round • Sheet Hardness- HRB 92 / HB 195 or Less • Material- 400 Series Stainless Steel • Finish- Passivated per ASTM A380
	Series FH4-U Metric Sizes

Part
Number

Thread

"S"
Max.

"H"
Head
Diameter

"L"
Overall
Length

Min.
Sheet
Thickness

Hole
Size in
Sheet

Max.
Hole in
Attached
Parts

Min.
Distance
to Edge

Mil-Spec

FH4-M3-6-U

M3 x 0.5

2.10
mm

4.60
mm

6.00
mm

1.00 - 2.40
mm

3.00
mm

3.60
mm

5.60
mm

N/A

FH4-M3-8-U

M3 x 0.5

2.10
mm

4.60
mm

8.00
mm

1.00 - 2.40
mm

3.00
mm

3.60
mm

5.60
mm

N/A

FH4-M3-10-U

M3 x 0.5

2.10
mm

4.60
mm

10.00
mm

1.00 - 2.40
mm

3.00
mm

3.60
mm

5.60
mm

N/A

FH4-M3-12-U

M3 x 0.5

2.10
mm

4.60
mm

12.00
mm

1.00 - 2.40
mm

3.00
mm

3.60
mm

5.60
mm

N/A

FH4-M3-15-U

M3 x 0.5

2.10
mm

4.60
mm

15.00
mm

1.00 - 2.40
mm

3.00
mm

3.60
mm

5.60
mm

N/A

FH4-M3-18-U

M3 x 0.5

2.10
mm

4.60
mm

18.00
mm

1.00 - 2.40
mm

3.00
mm

3.60
mm

5.60
mm

N/A

FH4-M3-20-U

M3 x 0.5

2.10
mm

4.60
mm

20.00
mm

1.00 - 2.40
mm

3.00
mm

3.60
mm

5.60
mm

N/A

FH4-M3-25-U

M3 x 0.5

2.10
mm

4.60
mm

25.00
mm

1.00 - 2.40
mm

3.00
mm

3.60
mm

5.60
mm

N/A

FH4-M4-6-U

M4 x 0.7

2.40
mm

5.90
mm

6.00
mm

1.00 - 2.40
mm

4.00
mm

4.60
mm

7.20
mm

N/A

FH4-M4-8-U

M4 x 0.7

2.40
mm

5.90
mm

8.00
mm

1.00 - 2.40
mm

4.00
mm

4.60
mm

7.20
mm

N/A

FH4-M4-10-U

M4 x 0.7

2.40
mm

5.90
mm

10.00
mm

1.00 - 2.40
mm

4.00
mm

4.60
mm

7.20
mm

N/A

FH4-M4-12-U

M4 x 0.7

2.40
mm

5.90
mm

12.00
mm

1.00 - 2.40
mm

4.00
mm

4.60
mm

7.20
mm

N/A

FH4-M4-15-U

M4 x 0.7

2.40
mm

5.90
mm

15.00
mm

1.00 - 2.40
mm

4.00
mm

4.60
mm

7.20
mm

N/A

FH4-M4-18-U

M4 x 0.7

2.40
mm

5.90
mm

18.00
mm

1.00 - 2.40
mm

4.00
mm

4.60
mm

7.20
mm

N/A

FH4-M4-20-U

M4 x 0.7

2.40
mm

5.90
mm

20.00
mm

1.00 - 2.40
mm

4.00
mm

4.60
mm

7.20
mm

N/A

FH4-M4-25-U

M4 x 0.7

2.40
mm

5.90
mm

25.00
mm

1.00 - 2.40
mm

4.00
mm

4.60
mm

7.20
mm

N/A

FH4-M4-30-U

M4 x 0.7

2.40
mm

5.90
mm

30.00
mm

1.00 - 2.40
mm

4.00
mm

4.60
mm

7.20
mm

N/A

FH4-M4-35-U

M4 x 0.7

2.40
mm

5.90
mm

35.00
mm

1.00 - 2.40
mm

4.00
mm

4.60
mm

7.20
mm

N/A

FH4-M5-8-U

M5 x 0.8

2.70
mm

6.50
mm

8.00
mm

1.00 - 2.40
mm

5.00
mm

5.60
mm

7.20
mm

N/A

FH4-M5-10-U

M5 x 0.8

2.70
mm

6.50
mm

10.00
mm

1.00 - 2.40
mm

5.00
mm

5.60
mm

7.20
mm

N/A

FH4-M5-12-U

M5 x 0.8

2.70
mm

6.50
mm

12.00
mm

1.00 - 2.40
mm

5.00
mm

5.60
mm

7.20
mm

N/A

FH4-M5-15-U

M5 x 0.8

2.70
mm

6.50
mm

15.00
mm

1.00 - 2.40
mm

5.00
mm

5.60
mm

7.20
mm

N/A

FH4-M5-18-U

M5 x 0.8

2.70
mm

6.50
mm

18.00
mm

1.00 - 2.40
mm

5.00
mm

5.60
mm

7.20
mm

N/A

FH4-M5-20-U

M5 x 0.8

2.70
mm

6.50
mm

20.00
mm

1.00 - 2.40
mm

5.00
mm

5.60
mm

7.20
mm

N/A

FH4-M5-25-U

M5 x 0.8

2.70
mm

6.50
mm

25.00
mm

1.00 - 2.40
mm

5.00
mm

5.60
mm

7.20
mm

N/A

FH4-M5-30-U

M5 x 0.8

2.70
mm

6.50
mm

30.00
mm

1.00 - 2.40
mm

5.00
mm

5.60
mm

7.20
mm

N/A

FH4-M5-35-U

M5 x 0.8

2.70
mm

6.50
mm

35.00
mm

1.00 - 2.40
mm

5.00
mm

5.60
mm

7.20
mm

N/A

FH4-M6-10-U

M6 x 1.0

3.00
mm

8.20
mm

10.00
mm

1.60 - 3.00
mm

6.00
mm

6.60
mm

7.90
mm

N/A

FH4-M6-12-U

M6 x 1.0

3.00
mm

8.20
mm

12.00
mm

1.60 - 3.00
mm

6.00
mm

6.60
mm

7.90
mm

N/A

FH4-M6-15-U

M6 x 1.0

3.00
mm

8.20
mm

15.00
mm

1.60 - 3.00
mm

6.00
mm

6.60
mm

7.90
mm

N/A

FH4-M6-18-U

M6 x 1.0

3.00
mm

8.20
mm

18.00
mm

1.60 - 3.00
mm

6.00
mm

6.60
mm

7.90
mm

N/A

FH4-M6-20-U

M6 x 1.0

3.00
mm

8.20
mm

20.00
mm

1.60 - 3.00
mm

6.00
mm

6.60
mm

7.90
mm

N/A

FH4-M6-25-U

M6 x 1.0

3.00
mm

8.20
mm

25.00
mm

1.60 - 3.00
mm

6.00
mm

6.60
mm

7.90
mm

N/A

FH4-M6-30-U

M6 x 1.0

3.00
mm

8.20
mm

30.00
mm

1.60 - 3.00
mm

6.00
mm

6.60
mm

7.90
mm

N/A

FH4-M6-35-U

M6 x 1.0

3.00
mm

8.20
mm

35.00
mm

1.60 - 3.00
mm

6.00
mm

6.60
mm

7.90
mm

N/A

UNICORP Electronic Hardware - Self Clinching Fasteners

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