FHA Threaded Flush Head Studs

973-674-1700Standoffs, Spacers, Captive, Swage, Male Female Standoffs, Jack Screws, Male Male Standoffs, Handles, Thumb Screws, Thumbscrews, Shoulder Screws, Insulating Washers, Electronic Hardware.

Home Search Order Quote Cross Catalog Reps Technical Terms Distributors About Us Contact Us

Threaded Flush-Head Studs FHA-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 FHA-U

Metric Sizes: • Series FHA-U

Series FHA-U

Series FHA-U / American Standard Sizes

• Head Shape- Round • Sheet Hardness- HRB 50 / HB 82 or Less • Material- Aluminum • Finish- None
	Series FHA-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

FHA-256-4-U

2-56

0.075"

0.144"

0.250"

0.040"

0.085"

0.105"

0.187"

N/A

FHA-256-5-U

2-56

0.075"

0.144"

0.312"

0.040"

0.085"

0.105"

0.187"

N/A

FHA-256-6-U

2-56

0.075"

0.144"

0.375"

0.040"

0.085"

0.105"

0.187"

N/A

FHA-256-8-U

2-56

0.075"

0.144"

0.500"

0.040"

0.085"

0.105"

0.187"

N/A

FHA-256-10-U

2-56

0.075"

0.144"

0.625"

0.040"

0.085"

0.105"

0.187"

N/A

FHA-256-12-U

2-56

0.075"

0.144"

0.750"

0.040"

0.085"

0.105"

0.187"

N/A

FHA-440-4-U

4-40

0.085"

0.176"

0.250"

0.040"

0.111"

0.135"

0.219"

N/A

FHA-440-5-U

4-40

0.085"

0.176"

0.312"

0.040"

0.111"

0.135"

0.219"

N/A

FHA-440-6-U

4-40

0.085"

0.176"

0.375"

0.040"

0.111"

0.135"

0.219"

N/A

FHA-440-8-U

4-40

0.085"

0.176"

0.500"

0.040"

0.111"

0.135"

0.219"

N/A

FHA-440-10-U

4-40

0.085"

0.176"

0.625"

0.040"

0.111"

0.135"

0.219"

N/A

FHA-440-12-U

4-40

0.085"

0.176"

0.750"

0.040"

0.111"

0.135"

0.219"

N/A

FHA-440-14-U

4-40

0.085"

0.176"

0.875"

0.040"

0.111"

0.135"

0.219"

N/A

FHA-440-16-U

4-40

0.085"

0.176"

1.000"

0.040"

0.111"

0.135"

0.219"

N/A

FHA-440-20-U

4-40

0.085"

0.176"

1.250"

0.040"

0.111"

0.135"

0.219"

N/A

FHA-632-4-U

6-32

0.090"

0.206"

0.250"

0.040"

0.137"

0.160"

0.250"

N/A

FHA-632-5-U

6-32

0.090"

0.206"

0.312"

0.040"

0.137"

0.160"

0.250"

N/A

FHA-632-6-U

6-32

0.090"

0.206"

0.375"

0.040"

0.137"

0.160"

0.250"

N/A

FHA-632-8-U

6-32

0.090"

0.206"

0.500"

0.040"

0.137"

0.160"

0.250"

N/A

FHA-632-10-U

6-32

0.090"

0.206"

0.625"

0.040"

0.137"

0.160"

0.250"

N/A

FHA-632-12-U

6-32

0.090"

0.206"

0.750"

0.040"

0.137"

0.160"

0.250"

N/A

FHA-632-14-U

6-32

0.090"

0.206"

0.875"

0.040"

0.137"

0.160"

0.250"

N/A

FHA-632-16-U

6-32

0.090"

0.206"

1.000"

0.040"

0.137"

0.160"

0.250"

N/A

FHA-632-20-U

6-32

0.090"

0.206"

1.250"

0.040"

0.137"

0.160"

0.250"

N/A

FHA-632-24-U

6-32

0.090"

0.206"

1.500"

0.040"

0.137"

0.160"

0.250"

N/A

FHA-832-4-U

8-32

0.090"

0.237"

0.250"

0.040"

0.163"

0.185"

0.281"

N/A

FHA-832-5-U

8-32

0.090"

0.237"

0.312"

0.040"

0.163"

0.185"

0.281"

N/A

FHA-832-6-U

8-32

0.090"

0.237"

0.375"

0.040"

0.163"

0.185"

0.281"

N/A

FHA-832-8-U

8-32

0.090"

0.237"

0.500"

0.040"

0.163"

0.185"

0.281"

N/A

FHA-832-10-U

8-32

0.090"

0.237"

0.625"

0.040"

0.163"

0.185"

0.281"

N/A

FHA-832-12-U

8-32

0.090"

0.237"

0.750"

0.040"

0.163"

0.185"

0.281"

N/A

FHA-832-14-U

8-32

0.090"

0.237"

0.875"

0.040"

0.163"

0.185"

0.281"

N/A

FHA-832-16-U

8-32

0.090"

0.237"

1.000"

0.040"

0.163"

0.185"

0.281"

N/A

FHA-832-20-U

8-32

0.090"

0.237"

1.250"

0.040"

0.163"

0.185"

0.281"

N/A

FHA-832-24-U

8-32

0.090"

0.237"

1.500"

0.040"

0.163"

0.185"

0.281"

N/A

FHA-024-5-U

10-24

0.100"

0.256"

0.312"

0.040"

0.189"

0.210"

0.281"

N/A

FHA-024-6-U

10-24

0.100"

0.256"

0.375"

0.040"

0.189"

0.210"

0.281"

N/A

FHA-024-8-U

10-24

0.100"

0.256"

0.500"

0.040"

0.189"

0.210"

0.281"

N/A

FHA-024-10-U

10-24

0.100"

0.256"

0.625"

0.040"

0.189"

0.210"

0.281"

N/A

FHA-024-12-U

10-24

0.100"

0.256"

0.750"

0.040"

0.189"

0.210"

0.281"

N/A

FHA-024-14-U

10-24

0.100"

0.256"

0.875"

0.040"

0.189"

0.210"

0.281"

N/A

FHA-024-16-U

10-24

0.100"

0.256"

1.000"

0.040"

0.189"

0.210"

0.281"

N/A

FHA-024-20-U

10-24

0.100"

0.256"

1.250"

0.040"

0.189"

0.210"

0.281"

N/A

FHA-024-24-U

10-24

0.100"

0.256"

1.500"

0.040"

0.189"

0.210"

0.281"

N/A

FHA-032-5-U

10-32

0.100"

0.256"

0.312"

0.040"

0.189"

0.210"

0.281"

N/A

FHA-032-6-U

10-32

0.100"

0.256"

0.375"

0.040"

0.189"

0.210"

0.281"

N/A

FHA-032-8-U

10-32

0.100"

0.256"

0.500"

0.040"

0.189"

0.210"

0.281"

N/A

FHA-032-10-U

10-32

0.100"

0.256"

0.625"

0.040"

0.189"

0.210"

0.281"

N/A

FHA-032-12-U

10-32

0.100"

0.256"

0.750"

0.040"

0.189"

0.210"

0.281"

N/A

FHA-032-14-U

10-32

0.100"

0.256"

0.875"

0.040"

0.189"

0.210"

0.281"

N/A

FHA-032-16-U

10-32

0.100"

0.256"

1.000"

0.040"

0.189"

0.210"

0.281"

N/A

FHA-032-20-U

10-32

0.100"

0.256"

1.250"

0.040"

0.189"

0.210"

0.281"

N/A

FHA-032-24-U

10-32

0.100"

0.256"

1.500"

0.040"

0.189"

0.210"

0.281"

N/A

FHA-0420-6-U

1/4-20

0.135"

0.337"

0.375"

0.062"

0.249"

0.270"

0.312"

N/A

FHA-0420-8-U

1/4-20

0.135"

0.337"

0.500"

0.062"

0.249"

0.270"

0.312"

N/A

FHA-0420-10-U

1/4-20

0.135"

0.337"

0.625"

0.062"

0.249"

0.270"

0.312"

N/A

FHA-0420-12-U

1/4-20

0.135"

0.337"

0.750"

0.062"

0.249"

0.270"

0.312"

N/A

FHA-0420-14-U

1/4-20

0.135"

0.337"

0.875"

0.062"

0.249"

0.270"

0.312"

N/A

FHA-0420-16-U

1/4-20

0.135"

0.337"

1.000"

0.062"

0.249"

0.270"

0.312"

N/A

FHA-0420-18-U

1/4-20

0.135"

0.337"

1.125"

0.062"

0.249"

0.270"

0.312"

N/A

FHA-0420-20-U

1/4-20

0.135"

0.337"

1.250"

0.062"

0.249"

0.270"

0.312"

N/A

FHA-0420-24-U

1/4-20

0.135"

0.337"

1.500"

0.062"

0.249"

0.270"

0.312"

N/A

FHA-0420-28-U

1/4-20

0.135"

0.337"

1.750"

0.062"

0.249"

0.270"

0.312"

N/A

Series FHA-U / Metric Sizes

• Head Shape- Round • Sheet Hardness- HRB 50 / HB 82 or Less • Material- Aluminum • Finish- None
	Series FHA-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

FHA-M2.5-6-U

M2.5 x 0.45

1.95
mm

4.10
mm

6.00
mm

1.00
mm

2.50
mm

3.10
mm

5.40
mm

N/A

FHA-M2.5-8-U

M2.5 x 0.45

1.95
mm

4.10
mm

8.00
mm

1.00
mm

2.50
mm

3.10
mm

5.40
mm

N/A

FHA-M2.5-10-U

M2.5 x 0.45

1.95
mm

4.10
mm

10.00
mm

1.00
mm

2.50
mm

3.10
mm

5.40
mm

N/A

FHA-M2.5-12-U

M2.5 x 0.45

1.95
mm

4.10
mm

12.00
mm

1.00
mm

2.50
mm

3.10
mm

5.40
mm

N/A

FHA-M2.5-15-U

M2.5 x 0.45

1.95
mm

4.10
mm

15.00
mm

1.00
mm

2.50
mm

3.10
mm

5.40
mm

N/A

FHA-M2.5-18-U

M2.5 x 0.45

1.95
mm

4.10
mm

18.00
mm

1.00
mm

2.50
mm

3.10
mm

5.40
mm

N/A

FHA-M3-6-U

M3 x 0.5

2.10
mm

4.60
mm

6.00
mm

1.00
mm

3.00
mm

3.60
mm

5.60
mm

N/A

FHA-M3-8-U

M3 x 0.5

2.10
mm

4.60
mm

8.00
mm

1.00
mm

3.00
mm

3.60
mm

5.60
mm

N/A

FHA-M3-10-U

M3 x 0.5

2.10
mm

4.60
mm

10.00
mm

1.00
mm

3.00
mm

3.60
mm

5.60
mm

N/A

FHA-M3-12-U

M3 x 0.5

2.10
mm

4.60
mm

12.00
mm

1.00
mm

3.00
mm

3.60
mm

5.60
mm

N/A

FHA-M3-15-U

M3 x 0.5

2.10
mm

4.60
mm

15.00
mm

1.00
mm

3.00
mm

3.60
mm

5.60
mm

N/A

FHA-M3-18-U

M3 x 0.5

2.10
mm

4.60
mm

18.00
mm

1.00
mm

3.00
mm

3.60
mm

5.60
mm

N/A

FHA-M3-20-U

M3 x 0.5

2.10
mm

4.60
mm

20.00
mm

1.00
mm

3.00
mm

3.60
mm

5.60
mm

N/A

FHA-M3-25-U

M3 x 0.5

2.10
mm

4.60
mm

25.00
mm

1.00
mm

3.00
mm

3.60
mm

5.60
mm

N/A

FHA-M3.5-6-U

M3.5 x 0.6

2.25
mm

5.30
mm

6.00
mm

1.00
mm

3.50
mm

4.10
mm

6.40
mm

N/A

FHA-M3.5-8-U

M3.5 x 0.6

2.25
mm

5.30
mm

8.00
mm

1.00
mm

3.50
mm

4.10
mm

6.40
mm

N/A

FHA-M3.5-10-U

M3.5 x 0.6

2.25
mm

5.30
mm

10.00
mm

1.00
mm

3.50
mm

4.10
mm

6.40
mm

N/A

FHA-M3.5-12-U

M3.5 x 0.6

2.25
mm

5.30
mm

12.00
mm

1.00
mm

3.50
mm

4.10
mm

6.40
mm

N/A

FHA-M3.5-15-U

M3.5 x 0.6

2.25
mm

5.30
mm

15.00
mm

1.00
mm

3.50
mm

4.10
mm

6.40
mm

N/A

FHA-M3.5-18-U

M3.5 x 0.6

2.25
mm

5.30
mm

18.00
mm

1.00
mm

3.50
mm

4.10
mm

6.40
mm

N/A

FHA-M3.5-20-U

M3.5 x 0.6

2.25
mm

5.30
mm

20.00
mm

1.00
mm

3.50
mm

4.10
mm

6.40
mm

N/A

FHA-M3.5-25-U

M3.5 x 0.6

2.25
mm

5.30
mm

25.00
mm

1.00
mm

3.50
mm

4.10
mm

6.40
mm

N/A

FHA-M3.5-30-U

M3.5 x 0.6

2.25
mm

5.30
mm

30.00
mm

1.00
mm

3.50
mm

4.10
mm

6.40
mm

N/A

FHA-M4-6-U

M4 x 0.7

2.40
mm

5.90
mm

6.00
mm

1.00
mm

4.00
mm

4.60
mm

7.20
mm

N/A

FHA-M4-8-U

M4 x 0.7

2.40
mm

5.90
mm

8.00
mm

1.00
mm

4.00
mm

4.60
mm

7.20
mm

N/A

FHA-M4-10-U

M4 x 0.7

2.40
mm

5.90
mm

10.00
mm

1.00
mm

4.00
mm

4.60
mm

7.20
mm

N/A

FHA-M4-12-U

M4 x 0.7

2.40
mm

5.90
mm

12.00
mm

1.00
mm

4.00
mm

4.60
mm

7.20
mm

N/A

FHA-M4-15-U

M4 x 0.7

2.40
mm

5.90
mm

15.00
mm

1.00
mm

4.00
mm

4.60
mm

7.20
mm

N/A

FHA-M4-18-U

M4 x 0.7

2.40
mm

5.90
mm

18.00
mm

1.00
mm

4.00
mm

4.60
mm

7.20
mm

N/A

FHA-M4-20-U

M4 x 0.7

2.40
mm

5.90
mm

20.00
mm

1.00
mm

4.00
mm

4.60
mm

7.20
mm

N/A

FHA-M4-25-U

M4 x 0.7

2.40
mm

5.90
mm

25.00
mm

1.00
mm

4.00
mm

4.60
mm

7.20
mm

N/A

FHA-M4-30-U

M4 x 0.7

2.40
mm

5.90
mm

30.00
mm

1.00
mm

4.00
mm

4.60
mm

7.20
mm

N/A

FHA-M4-35-U

M4 x 0.7

2.40
mm

5.90
mm

35.00
mm

1.00
mm

4.00
mm

4.60
mm

7.20
mm

N/A

FHA-M5-8-U

M5 x 0.8

2.70
mm

6.50
mm

8.00
mm

1.00
mm

5.00
mm

5.60
mm

7.20
mm

N/A

FHA-M5-10-U

M5 x 0.8

2.70
mm

6.50
mm

10.00
mm

1.00
mm

5.00
mm

5.60
mm

7.20
mm

N/A

FHA-M5-12-U

M5 x 0.8

2.70
mm

6.50
mm

12.00
mm

1.00
mm

5.00
mm

5.60
mm

7.20
mm

N/A

FHA-M5-15-U

M5 x 0.8

2.70
mm

6.50
mm

15.00
mm

1.00
mm

5.00
mm

5.60
mm

7.20
mm

N/A

FHA-M5-18-U

M5 x 0.8

2.70
mm

6.50
mm

18.00
mm

1.00
mm

5.00
mm

5.60
mm

7.20
mm

N/A

FHA-M5-20-U

M5 x 0.8

2.70
mm

6.50
mm

20.00
mm

1.00
mm

5.00
mm

5.60
mm

7.20
mm

N/A

FHA-M5-25-U

M5 x 0.8

2.70
mm

6.50
mm

25.00
mm

1.00
mm

5.00
mm

5.60
mm

7.20
mm

N/A

FHA-M5-30-U

M5 x 0.8

2.70
mm

6.50
mm

30.00
mm

1.00
mm

5.00
mm

5.60
mm

7.20
mm

N/A

FHA-M5-35-U

M5 x 0.8

2.70
mm

6.50
mm

35.00
mm

1.00
mm

5.00
mm

5.60
mm

7.20
mm

N/A

FHA-M6-10-U

M6 x 1.0

3.00
mm

8.20
mm

10.00
mm

1.60
mm

6.00
mm

6.60
mm

7.90
mm

N/A

FHA-M6-12-U

M6 x 1.0

3.00
mm

8.20
mm

12.00
mm

1.60
mm

6.00
mm

6.60
mm

7.90
mm

N/A

FHA-M6-15-U

M6 x 1.0

3.00
mm

8.20
mm

15.00
mm

1.60
mm

6.00
mm

6.60
mm

7.90
mm

N/A

FHA-M6-18-U

M6 x 1.0

3.00
mm

8.20
mm

18.00
mm

1.60
mm

6.00
mm

6.60
mm

7.90
mm

N/A

FHA-M6-20-U

M6 x 1.0

3.00
mm

8.20
mm

20.00
mm

1.60
mm

6.00
mm

6.60
mm

7.90
mm

N/A

FHA-M6-25-U

M6 x 1.0

3.00
mm

8.20
mm

25.00
mm

1.60
mm

6.00
mm

6.60
mm

7.90
mm

N/A

FHA-M6-30-U

M6 x 1.0

3.00
mm

8.20
mm

30.00
mm

1.60
mm

6.00
mm

6.60
mm

7.90
mm

N/A

FHA-M6-35-U

M6 x 1.0

3.00
mm

8.20
mm

35.00
mm

1.60
mm

6.00
mm

6.60
mm

7.90
mm

N/A

UNICORP Electronic Hardware - Self Clinching Fasteners

Phone: 973-674-1700 Toll Free: 1-800-526-1389 Fax: 973-674-3803

UNICORP is a leader in manufacturing stock and custom
electronic hardware, handles and precision fasteners used by leading companies
in nearly every industry since 1971.

291 Cleveland St, Orange, New Jersey 07050  USA
Mailing Address:  P.O. Box 280, Orange, New Jersey 07051-0280  USA

Feedback I Legal Notice I Copyright  I Services I Jobs I Contact Us I Email Us I Privacy Statement
Copyright©2020, Unicorp Inc., unicorpinc.com or its affiliates