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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
• 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
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

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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.


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

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