SSS SSC SSA Spring Top Standoffs

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Spring Top Standoffs SSS-U, SSC-U, SSA-U

Self Clinching Fasteners • Standoffs For Sheet Metal
American Standard (Inches) & Metric Sizes

UNICORP Electronic Hardware Self-Clinching Fasteners - Spring - Top SSS, SSC, SSA

• Self-clinching • Permanent installation • Installed quickly and easily in metal panels by pressing into prepared hole
• Squeezed into placed • Spring-action post allows for fast attachment and removal with a snap
• No screws or other hardware needed

American Standard Sizes: • Series SSS-U • Series SSC-U • Series SSA-U

Metric Sizes: • Series SSS-U • Series SSC-U • Series SSA-U

Series SSS-U

Series SSS-U / American Standard Sizes

      • Head Shape-  Round
      • Top Sheet Thickness Range-  0.040" - 0.070"
      • Top Sheet Mounting Hole A-  0.156"
      • Top Sheet Material-  PC Board or Metal
      • Bottom Sheet Edge Distance C1 Min.-  0.260"
      • Bottom Sheet Location Tolerance "E" Max.-  0.005"
      • Top Sheet Edge Distance C2 Min.-  0.100"
      • Bottom Hardness Max.-  HRB 60 / HB 107
      • Material-  Carbon Steel
      • Finish-  Zinc Clear Plated, Colorless with Clear Chromate

UNICORP Electronic Hardware Self-Clinching Fasteners - Spring - Top SSS-U, SSC-U, SSA-U

Series SSS-U
American Standard Sizes
(SAE)

Part
Number

"H"
Nom.

"L"
Length

Bottom
Sheet
Min.
Thickness

"B" Bottom
Sheet
Mounting
Hole

Top
Hardness
Max.

Bottom
Sheet
Material

"B"

"C"
Max

"P"

Anvil
Hole
Diameter

Mil-Spec

SSS-156-8ZI-U

1/4"

0.250"

0.040"

0.213"

No Limit

Metal

0.188"

0.212"

0.141"

0.216" - 0.219"

N/A

SSS-156-10ZI-U

1/4"

0.312"

0.040"

0.213"

No Limit

Metal

0.188"

0.212"

0.141"

0.216" - 0.219"

N/A

SSS-156-12ZI-U

1/4"

0.375"

0.040"

0.213"

No Limit

Metal

0.188"

0.212"

0.141"

0.216" - 0.219"

N/A

SSS-156-14ZI-U

1/4"

0.437"

0.040"

0.213"

No Limit

Metal

0.188"

0.212"

0.141"

0.216" - 0.219"

N/A

SSS-156-16ZI-U

1/4"

0.500"

0.040"

0.213"

No Limit

Metal

0.188"

0.212"

0.141"

0.216" - 0.219"

N/A

SSS-156-18ZI-U

1/4"

0.562"

0.040"

0.213"

No Limit

Metal

0.188"

0.212"

0.141"

0.216" - 0.219"

N/A

SSS-156-20ZI-U

1/4"

0.625"

0.040"

0.213"

No Limit

Metal

0.188"

0.212"

0.141"

0.216" - 0.219"

N/A

SSS-156-24ZI-U

1/4"

0.750"

0.040"

0.213"

No Limit

Metal

0.188"

0.212"

0.141"

0.216" - 0.219"

N/A

SSS-156-28ZI-U

1/4"

0.875"

0.040"

0.213"

No Limit

Metal

0.188"

0.212"

0.141"

0.216" - 0.219"

N/A

SSS-156-32ZI-U

1/4"

1.000"

0.040"

0.213"

No Limit

Metal

0.188"

0.212"

0.141"

0.216" - 0.219"

N/A

Series SSS-U / Metric Sizes

      • Head Shape-  Round
      • Top Sheet Thickness Range-  1.00 mm - 1.80 mm
      • Top Sheet Mounting Hole A-  4.00 mm
      • Top Sheet Material-  PC Board or Metal
      • Bottom Sheet Edge Distance C1 Min.-  6.60 mm
      • Top Sheet Edge Distance C2 Min.-  2.54 mm
      • Bottom Hardness Max.-  HRB 60 / HB 107
      • Material-  Carbon Steel
      • Finish-  Zinc Clear Plated, Colorless with Clear Chromate

Series SSS-U
Metric Sizes

Part
Number

"H"
Nom.

"L"
Length

Bottom
Sheet
Min.
Thickness

"B" Bottom
Sheet
Mounting
Hole

Top
Hardness
Max.

Bottom
Sheet
Material

"B"

"C"
Max

"P"

Anvil
Hole
Diameter

Mil-Spec

SSS-4MM-8ZI-U

6.35
mm

8.00
mm

1.00
mm

5.41
mm

No Limit

Metal

4.78
mm

5.39
mm

3.58
mm

5.49 - 5.56
mm

N/A

SSS-4MM-10ZI-U

6.35
mm

10.00
mm

1.00
mm

5.41
mm

No Limit

Metal

4.78
mm

5.39
mm

3.58
mm

5.49 - 5.56
mm

N/A

SSS-4MM-12ZI-U

6.35
mm

12.00
mm

1.00
mm

5.41
mm

No Limit

Metal

4.78
mm

5.39
mm

3.58
mm

5.49 - 5.56
mm

N/A

SSS-4MM-14ZI-U

6.35
mm

14.00
mm

1.00
mm

5.41
mm

No Limit

Metal

4.78
mm

5.39
mm

3.58
mm

5.49 - 5.56
mm

N/A

SSS-4MM-16ZI-U

6.35
mm

16.00
mm

1.00
mm

5.41
mm

No Limit

Metal

4.78
mm

5.39
mm

3.58
mm

5.49 - 5.56
mm

N/A

SSS-4MM-18ZI-U

6.35
mm

18.00
mm

1.00
mm

5.41
mm

No Limit

Metal

4.78
mm

5.39
mm

3.58
mm

5.49 - 5.56
mm

N/A

SSS-4MM-20ZI-U

6.35
mm

20.00
mm

1.00
mm

5.41
mm

No Limit

Metal

4.78
mm

5.39
mm

3.58
mm

5.49 - 5.56
mm

N/A

SSS-4MM-22ZI-U

6.35
mm

22.00
mm

1.00
mm

5.41
mm

No Limit

Metal

4.78
mm

5.39
mm

3.58
mm

5.49 - 5.56
mm

N/A

SSS-4MM-25ZI-U

6.35
mm

25.00
mm

1.00
mm

5.41
mm

No Limit

Metal

4.78
mm

5.39
mm

3.58
mm

5.49 - 5.56
mm

N/A

Series SSC-U

Series SSC-U / American Standard Sizes

      • Head Shape-  Round
      • Top Sheet Thickness Range-  0.040" - 0.070"
      • Top Sheet Mounting Hole A-  0.156"
      • Top Sheet Material-  PC Board or Metal
      • Bottom Sheet Edge Distance C1 Min.-  0.260"
      • Bottom Sheet Location Tolerance "E" Max.-  0.005"
      • Top Sheet Edge Distance C2 Min.-  0.100"
      • Bottom Hardness Max.-  HRB 70 / HB 125
      • Material-  400 Series Stainless Steel
      • Finish-  Passivated per ASTM A380

Series SSC-U
American Standard Sizes
(SAE)

Part
Number

"H"
Nom.

"L"
Length

Bottom
Sheet
Min.
Thickness

"B" Bottom
Sheet
Mounting
Hole

Top
Hardness
Max.

Bottom
Sheet
Material

"B"

"C"
Max

"P"

Anvil
Hole
Diameter

Mil-Spec

SSC-156-8-U

1/4"

0.250"

0.040"

0.213"

No Limit

Metal

0.188"

0.212"

0.141"

0.216" - 0.219"

N/A

SSC-156-10-U

1/4"

0.312"

0.040"

0.213"

No Limit

Metal

0.188"

0.212"

0.141"

0.216" - 0.219"

N/A

SSC-156-12-U

1/4"

0.375"

0.040"

0.213"

No Limit

Metal

0.188"

0.212"

0.141"

0.216" - 0.219"

N/A

SSC-156-14-U

1/4"

0.437"

0.040"

0.213"

No Limit

Metal

0.188"

0.212"

0.141"

0.216" - 0.219"

N/A

SSC-156-16-U

1/4"

0.500"

0.040"

0.213"

No Limit

Metal

0.188"

0.212"

0.141"

0.216" - 0.219"

N/A

SSC-156-18-U

1/4"

0.562"

0.040"

0.213"

No Limit

Metal

0.188"

0.212"

0.141"

0.216" - 0.219"

N/A

SSC-156-20-U

1/4"

0.625"

0.040"

0.213"

No Limit

Metal

0.188"

0.212"

0.141"

0.216" - 0.219"

N/A

SSC-156-24-U

1/4"

0.750"

0.040"

0.213"

No Limit

Metal

0.188"

0.212"

0.141"

0.216" - 0.219"

N/A

SSC-156-28-U

1/4"

0.875"

0.040"

0.213"

No Limit

Metal

0.188"

0.212"

0.141"

0.216" - 0.219"

N/A

SSC-156-32-U

1/4"

1.000"

0.040"

0.213"

No Limit

Metal

0.188"

0.212"

0.141"

0.216" - 0.219"

N/A

Series SSC-U / Metric Sizes

      • Head Shape-  Round
      • Top Sheet Thickness Range-  1.00 mm - 1.80 mm
      • Top Sheet Mounting Hole A-  4.00 mm
      • Top Sheet Material-  PC Board or Metal
      • Bottom Sheet Edge Distance C1 Min.-  6.60 mm
      • Top Sheet Edge Distance C2 Min.-  2.54 mm
      • Bottom Hardness Max.-  HRB 70 / HB 125
      • Material-  400 Series Stainless Steel
      • Finish-  Passivated per ASTM A380

Series SSC-U
Metric Sizes

Part
Number

"H"
Nom.

"L"
Length

Bottom
Sheet
Min.
Thickness

"B" Bottom
Sheet
Mounting
Hole

Top
Hardness
Max.

Bottom
Sheet
Material

"B"

"C"
Max

"P"

Anvil
Hole
Diameter

Mil-Spec

SSC-4MM-8-U

6.35
mm

8.00
mm

1.00
mm

5.41
mm

No Limit

Metal

4.78
mm

5.39
mm

3.58
mm

5.49 - 5.56
mm

N/A

SSC-4MM-10-U

6.35
mm

10.00
mm

1.00
mm

5.41
mm

No Limit

Metal

4.78
mm

5.39
mm

3.58
mm

5.49 - 5.56
mm

N/A

SSC-4MM-12-U

6.35
mm

12.00
mm

1.00
mm

5.41
mm

No Limit

Metal

4.78
mm

5.39
mm

3.58
mm

5.49 - 5.56
mm

N/A

SSC-4MM-14-U

6.35
mm

14.00
mm

1.00
mm

5.41
mm

No Limit

Metal

4.78
mm

5.39
mm

3.58
mm

5.49 - 5.56
mm

N/A

SSC-4MM-16-U

6.35
mm

16.00
mm

1.00
mm

5.41
mm

No Limit

Metal

4.78
mm

5.39
mm

3.58
mm

5.49 - 5.56
mm

N/A

SSC-4MM-18-U

6.35
mm

18.00
mm

1.00
mm

5.41
mm

No Limit

Metal

4.78
mm

5.39
mm

3.58
mm

5.49 - 5.56
mm

N/A

SSC-4MM-20-U

6.35
mm

20.00
mm

1.00
mm

5.41
mm

No Limit

Metal

4.78
mm

5.39
mm

3.58
mm

5.49 - 5.56
mm

N/A

SSC-4MM-22-U

6.35
mm

22.00
mm

1.00
mm

5.41
mm

No Limit

Metal

4.78
mm

5.39
mm

3.58
mm

5.49 - 5.56
mm

N/A

SSC-4MM-25-U

6.35
mm

25.00
mm

1.00
mm

5.41
mm

No Limit

Metal

4.78
mm

5.39
mm

3.58
mm

5.49 - 5.56
mm

N/A

Series SSA-U

Series SSA-U / American Standard Sizes

      • Head Shape-  Round
      • Top Sheet Thickness Range-  0.040" - 0.070"
      • Top Sheet Mounting Hole A-  0.156"
      • Top Sheet Material-  PC Board or Metal
      • Bottom Sheet Edge Distance C1 Min.-  0.260"
      • Bottom Sheet Location Tolerance "E" Max.-  0.005"
      • Top Sheet Edge Distance C2 Min.-  0.100"
      • Bottom Hardness Max.-  HRB 50 / HB 82
      • Material-  Aluminum
      • Finish-  Plain

Series SSA-U
American Standard Sizes
(SAE)

Part
Number

"H"
Nom.

"L"
Length

Bottom
Sheet
Min.
Thickness

"B" Bottom
Sheet
Mounting
Hole

Top
Hardness
Max.

Bottom
Sheet
Material

"B"

"C"
Max

"P"

Anvil
Hole
Diameter

Mil-Spec

SSA-156-8-U

1/4"

0.250"

0.040"

0.213"

No Limit

Metal

0.188"

0.212"

0.141"

0.216" - 0.219"

N/A

SSA-156-10-U

1/4"

0.312"

0.040"

0.213"

No Limit

Metal

0.188"

0.212"

0.141"

0.216" - 0.219"

N/A

SSA-156-12-U

1/4"

0.375"

0.040"

0.213"

No Limit

Metal

0.188"

0.212"

0.141"

0.216" - 0.219"

N/A

SSA-156-14-U

1/4"

0.437"

0.040"

0.213"

No Limit

Metal

0.188"

0.212"

0.141"

0.216" - 0.219"

N/A

SSA-156-16-U

1/4"

0.500"

0.040"

0.213"

No Limit

Metal

0.188"

0.212"

0.141"

0.216" - 0.219"

N/A

SSA-156-18-U

1/4"

0.562"

0.040"

0.213"

No Limit

Metal

0.188"

0.212"

0.141"

0.216" - 0.219"

N/A

SSA-156-20-U

1/4"

0.625"

0.040"

0.213"

No Limit

Metal

0.188"

0.212"

0.141"

0.216" - 0.219"

N/A

SSA-156-24-U

1/4"

0.750"

0.040"

0.213"

No Limit

Metal

0.188"

0.212"

0.141"

0.216" - 0.219"

N/A

SSA-156-28-U

1/4"

0.875"

0.040"

0.213"

No Limit

Metal

0.188"

0.212"

0.141"

0.216" - 0.219"

N/A

SSA-156-32-U

1/4"

1.000"

0.040"

0.213"

No Limit

Metal

0.188"

0.212"

0.141"

0.216" - 0.219"

N/A

Series SSA-U / Metric Sizes

• Head Shape- Round • Top Sheet Thickness Range- 1.00 mm - 1.80 mm • Top Sheet Mounting Hole A- 4.00 mm • Top Sheet Material- PC Board or Metal • Bottom Sheet Edge Distance C1 Min.- 6.60 mm • Top Sheet Edge Distance C2 Min.- 2.54 mm • Bottom Hardness Max.- HRB 50 / HB 82 • Material- Aluminum • Finish- Plain
	Series SSA-U Metric Sizes

Part
Number

"H"
Nom.

"L"
Length

Bottom
Sheet
Min.
Thickness

"B" Bottom
Sheet
Mounting
Hole

Top
Hardness
Max.

Bottom
Sheet
Material

"B"

"C"
Max

"P"

Anvil
Hole
Diameter

Mil-Spec

SSA-4MM-8-U

6.35
mm

8.00
mm

1.00
mm

5.41
mm

No Limit

Metal

4.78
mm

5.39
mm

3.58
mm

5.49 - 5.56
mm

N/A

SSA-4MM-10-U

6.35
mm

10.00
mm

1.00
mm

5.41
mm

No Limit

Metal

4.78
mm

5.39
mm

3.58
mm

5.49 - 5.56
mm

N/A

SSA-4MM-12-U

6.35
mm

12.00
mm

1.00
mm

5.41
mm

No Limit

Metal

4.78
mm

5.39
mm

3.58
mm

5.49 - 5.56
mm

N/A

SSA-4MM-14-U

6.35
mm

14.00
mm

1.00
mm

5.41
mm

No Limit

Metal

4.78
mm

5.39
mm

3.58
mm

5.49 - 5.56
mm

N/A

SSA-4MM-16-U

6.35
mm

16.00
mm

1.00
mm

5.41
mm

No Limit

Metal

4.78
mm

5.39
mm

3.58
mm

5.49 - 5.56
mm

N/A

SSA-4MM-18-U

6.35
mm

18.00
mm

1.00
mm

5.41
mm

No Limit

Metal

4.78
mm

5.39
mm

3.58
mm

5.49 - 5.56
mm

N/A

SSA-4MM-20-U

6.35
mm

20.00
mm

1.00
mm

5.41
mm

No Limit

Metal

4.78
mm

5.39
mm

3.58
mm

5.49 - 5.56
mm

N/A

SSA-4MM-22-U

6.35
mm

22.00
mm

1.00
mm

5.41
mm

No Limit

Metal

4.78
mm

5.39
mm

3.58
mm

5.49 - 5.56
mm

N/A

SSA-4MM-25-U

6.35
mm

25.00
mm

1.00
mm

5.41
mm

No Limit

Metal

4.78
mm

5.39
mm

3.58
mm

5.49 - 5.56
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

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