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Lock Nuts  SL-U

Self Clinching Fasteners  •  Nuts For Sheet Metal
American Standard (Inches) & Metric Sizes
• Self-clinching     • Self-locking     • Installed quickly and easily
American Standard Sizes:   • Series SL-U
Metric Sizes:   • Series SL-U
Series  SL-U
Series  SL-U  /  American Standard Sizes
      • Shape-  Round
      • Sheet Hardness-  HRB 80 / HB 150 or Less
      • Material-  Heat-Treated Carbon Steel
      • Finish-  Zinc Clear Plated per ASTM B633
      • Mil-Spec-  N/A
Series SL-U
American Standard Sizes
(SAE)
Part
Number
Thread "A"
(Shank)
Max.
"T"
Head
Height
"E"
Head
Diameter
"C"
Body
Diameter
Min.
Sheet
Thickness
Hole
Size in
Sheet
Min.
Distance
to Edge
SL-440-1ZI-U 4-40 0.038" 0.070" 0.250" 0.165" 0.040" 0.166" 0.190"
SL-632-1ZI-U 6-32 0.038" 0.070" 0.280" 0.187" 0.040" 0.188" 0.220"
SL-832-1ZI-U 8-32 0.038" 0.090" 0.310" 0.212" 0.040" 0.213" 0.270"
SL-032-1ZI-U 10-32 0.038" 0.090" 0.340" 0.249" 0.040" 0.250" 0.280"
SL-0420-1ZI-U 1/4-20 0.054" 0.170" 0.440" 0.343" 0.056" 0.344" 0.340"
SL-0518-1ZI-U 5/16-18 0.054" 0.230" 0.500" 0.412" 0.056" 0.413" 0.380"
 
SL-440-2ZI-U 4-40 0.054" 0.070" 0.250" 0.165" 0.056" 0.166" 0.190"
SL-632-2ZI-U 6-32 0.054" 0.070" 0.280" 0.187" 0.056" 0.188" 0.220"
SL-832-2ZI-U 8-32 0.054" 0.090" 0.310" 0.212" 0.056" 0.213" 0.270"
SL-032-2ZI-U 10-32 0.054" 0.090" 0.340" 0.249" 0.056" 0.250" 0.280"
SL-0420-2ZI-U 1/4-20 0.087" 0.170" 0.440" 0.343" 0.091" 0.344" 0.340"
SL-0518-2ZI-U 5/16-18 0.087" 0.230" 0.500" 0.412" 0.091" 0.413" 0.380"
Series  SL-U  /  Metric Sizes
      • Shape-  Round
      • Sheet Hardness-  HRB 80 / HB 150 or Less
      • Material-  Heat-Treated Carbon Steel
      • Finish-  Zinc Clear Plated per ASTM B633
      • Mil-Spec-  N/A
Series SL-U
Metric Sizes
Part
Number
Thread "A"
(Shank)
Max.
"T"
Head
Height
"E"
Head
Diameter
"C"
Body
Diameter
Min.
Sheet
Thickness
Hole
Size in
Sheet
Min.
Distance
to Edge
SL-M3-1ZI-U M3 x 0.5 0.98
mm
1.50
mm
6.35
mm
4.20
mm
1.00
mm
4.22
mm
4.80
mm
SL-M3.5-1ZI-U M3.5 x 0.6 0.98
mm
1.50
mm
7.11
mm
4.73
mm
1.00
mm
4.75
mm
5.60
mm
SL-M4-1ZI-U M4 x 0.7 0.98
mm
2.00
mm
7.87
mm
5.38
mm
1.00
mm
5.41
mm
6.90
mm
SL-M5-1ZI-U M5 x 0.8 0.98
mm
2.00
mm
8.64
mm
6.33
mm
1.00
mm
6.35
mm
7.10
mm
SL-M6-1ZI-U M6 x 1.0 1.38
mm
4.08
mm
11.18
mm
8.73
mm
1.40
mm
8.75
mm
8.60
mm
SL-M8-1ZI-U M8 x 1.25 1.38
mm
5.47
mm
12.70
mm
10.47
mm
1.40
mm
10.50
mm
9.70
mm
 
SL-M3-2ZI-U M3 x 0.5 1.38
mm
1.50
mm
6.35
mm
4.20
mm
1.40
mm
4.22
mm
4.80
mm
SL-M3.5-2ZI-U M3.5 x 0.6 1.38
mm
1.50
mm
7.11
mm
4.73
mm
1.40
mm
4.75
mm
5.60
mm
SL-M4-2ZI-U M4 x 0.7 1.38
mm
2.00
mm
7.87
mm
5.38
mm
1.40
mm
5.41
mm
6.90
mm
SL-M5-2ZI-U M5 x 0.8 1.38
mm
2.00
mm
8.64
mm
6.33
mm
1.40
mm
6.35
mm
7.10
mm
SL-M6-2ZI-U M6 x 1.0 2.21
mm
4.08
mm
11.18
mm
8.73
mm
2.30
mm
8.75
mm
8.60
mm
SL-M8-2ZI-U M8 x 1.25 2.21
mm
5.47
mm
12.70
mm
10.47
mm
2.30
mm
10.50
mm
9.70
mm

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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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