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Unthreaded Surface Mount Nuts
& Spacers Standoffs  SMTSO-U

Self Clinching Fasteners  •  Fasteners for PC Boards
American Standard (Inches) & Metric Sizes
• Self-clinching    • Unthreaded    • Thru-hole    • Provided on 13" recyclable reel    • Hex barrel
• Polyamide patch    • Used as PC Board attachment    • Installed quickly and easily
• Minimum sheet thickness of 0.060" /0.50 mm
American Standard Sizes:   • Series  SMTSO-U
Metric Sizes:   • Series  SMTSO-U
Series  SMTSO-U
Series  SMTSO-U  /  American Standard Sizes
      • Min. Sheet Thickness-  0.060"
      • Sheet Hardness-  N/A
      • Material-  Carbon Steel
      • Mil-Spec-  N/A
      • "DT" Finish-  Electro-Plated Matte-Tin per ASTM B 545,
                Class A with/ Clear Preservative Coating, Annealed
      • "ET" Finish-  Electro-Plated Bright Tin per ASTM B545,
                Class A with Clear Preservative Coating
Series SMTSO-U
American Standard Sizes
(SAE)
Part
Number
Thru
Hole
"A"
Max.
"C"
Max.
"E" "L"
Length
"H" Hole
Size in
Sheet
"D" Min.
Solder
Pad
Parts
per Reel
Pitch
Part Numbers with "DT" Finish
  SMTSO-116-2DT-U 0.116" 0.060" 0.161" 0.219" 0.062" 0.166" 0.244" 1500 12.00
mm
  SMTSO-116-4DT-U 0.116" 0.060" 0.161" 0.219" 0.125" 0.166" 0.244" 1000 12.00
mm
  SMTSO-116-8DT-U 0.116" 0.060" 0.161" 0.219" 0.250" 0.166" 0.244" 650 12.00
mm
  SMTSO-116-12DT-U 0.116" 0.060" 0.161" 0.219" 0.375" 0.166" 0.244" 300 16.00
mm
 
  SMTSO-143-2DT-U 0.143" 0.060" 0.208" 0.281" 0.062" 0.213" 0.306" 1500 12.00
mm
  SMTSO-143-4DT-U 0.143" 0.060" 0.208" 0.281" 0.125" 0.213" 0.306" 1000 12.00
mm
  SMTSO-143-8DT-U 0.143" 0.060" 0.208" 0.281" 0.250" 0.213" 0.306" 650 12.00
mm
  SMTSO-143-12DT-U 0.143" 0.060" 0.208" 0.281" 0.375" 0.213" 0.306" 300 16.00
mm
Part Numbers with "ET" Finish
  SMTSO-116-2ET-U 0.116" 0.060" 0.161" 0.219" 0.062" 0.166" 0.244" 1500 12.00
mm
  SMTSO-116-4ET-U 0.116" 0.060" 0.161" 0.219" 0.125" 0.166" 0.244" 1000 12.00
mm
  SMTSO-116-8ET-U 0.116" 0.060" 0.161" 0.219" 0.250" 0.166" 0.244" 650 12.00
mm
  SMTSO-116-12ET-U 0.116" 0.060" 0.161" 0.219" 0.375" 0.166" 0.244" 300 16.00
mm
 
  SMTSO-143-2ET-U 0.143" 0.060" 0.208" 0.281" 0.062" 0.213" 0.306" 1500 12.00
mm
  SMTSO-143-4ET-U 0.143" 0.060" 0.208" 0.281" 0.125" 0.213" 0.306" 1000 12.00
mm
  SMTSO-143-8ET-U 0.143" 0.060" 0.208" 0.281" 0.250" 0.213" 0.306" 650 12.00
mm
  SMTSO-143-12ET-U 0.143" 0.060" 0.208" 0.281" 0.375" 0.213" 0.306" 300 16.00
mm
Series  SMTSO-U  /  Metric Sizes
      • Min. Sheet Thickness-  1.53 mm
      • Sheet Hardness-  N/A
      • Material-  Carbon Steel
      • Mil-Spec-  N/A
      • "DT" Finish-  Electro-Plated Matte-Tin per ASTM B 545,
                Class A with/ Clear Preservative Coating, Annealed
      • "ET" Finish-  Electro-Plated Bright Tin per ASTM B545,
                Class A with Clear Preservative Coating
Series SMTSO-U
Metric Sizes
Part
Number
Thru
Hole
"A"
Max.
"C"
Max.
"E" "L"
Length
"H" Hole
Size in
Sheet
"D" Min.
Solder
Pad
Parts
per Reel
Pitch
Part Numbers with "DT" Finish
  SMTSO-3.6-2DT-U 3.60
mm
1.53
mm
5.28
mm
7.14
mm
2.00
mm
5.41
mm
7.77
mm
1500 12.00
mm
  SMTSO-3.6-3DT-U 3.60
mm
1.53
mm
5.28
mm
7.14
mm
3.00
mm
5.41
mm
7.77
mm
1000 12.00
mm
  SMTSO-3.6-4DT-U 3.60
mm
1.53
mm
5.28
mm
7.14
mm
4.00
mm
5.41
mm
7.77
mm
900 12.00
mm
  SMTSO-3.6-6DT-U 3.60
mm
1.53
mm
5.28
mm
7.14
mm
6.00
mm
5.41
mm
7.77
mm
650 12.00
mm
  SMTSO-3.6-8DT-U 3.60
mm
1.53
mm
5.28
mm
7.14
mm
8.00
mm
5.41
mm
7.77
mm
375 16.00
mm
  SMTSO-3.6-10DT-U 3.60
mm
1.53
mm
5.28
mm
7.14
mm
10.00
mm
5.41
mm
7.77
mm
300 16.00
mm
 
  SMTSO-4.2-2DT-U 4.20
mm
1.53
mm
6.22
mm
8.74
mm
2.00
mm
6.35
mm
9.37
mm
1100 16.00
mm
  SMTSO-4.2-3DT-U 4.20
mm
1.53
mm
6.22
mm
8.74
mm
3.00
mm
6.35
mm
9.37
mm
800 16.00
mm
  SMTSO-4.2-4DT-U 4.20
mm
1.53
mm
6.22
mm
8.74
mm
4.00
mm
6.35
mm
9.37
mm
675 16.00
mm
  SMTSO-4.2-6DT-U 4.20
mm
1.53
mm
6.22
mm
8.74
mm
6.00
mm
6.35
mm
9.37
mm
500 16.00
mm
  SMTSO-4.2-8DT-U 4.20
mm
1.53
mm
6.22
mm
8.74
mm
8.00
mm
6.35
mm
9.37
mm
375 16.00
mm
  SMTSO-4.2-10DT-U 4.20
mm
1.53
mm
6.22
mm
8.74
mm
10.00
mm
6.35
mm
9.37
mm
300 16.00
mm
Part Numbers with "ET" Finish
  SMTSO-3.6-2ET-U 3.60
mm
1.53
mm
5.28
mm
7.14
mm
2.00
mm
5.41
mm
7.77
mm
1500 12.00
mm
  SMTSO-3.6-3ET-U 3.60
mm
1.53
mm
5.28
mm
7.14
mm
3.00
mm
5.41
mm
7.77
mm
1000 12.00
mm
  SMTSO-3.6-4ET-U 3.60
mm
1.53
mm
5.28
mm
7.14
mm
4.00
mm
5.41
mm
7.77
mm
900 12.00
mm
  SMTSO-3.6-6ET-U 3.60
mm
1.53
mm
5.28
mm
7.14
mm
6.00
mm
5.41
mm
7.77
mm
650 12.00
mm
  SMTSO-3.6-8ET-U 3.60
mm
1.53
mm
5.28
mm
7.14
mm
8.00
mm
5.41
mm
7.77
mm
375 16.00
mm
  SMTSO-3.6-10ET-U 3.60
mm
1.53
mm
5.28
mm
7.14
mm
10.00
mm
5.41
mm
7.77
mm
300 16.00
mm
 
  SMTSO-4.2-2ET-U 4.20
mm
1.53
mm
6.22
mm
8.74
mm
2.00
mm
6.35
mm
9.37
mm
1100 16.00
mm
  SMTSO-4.2-3ET-U 4.20
mm
1.53
mm
6.22
mm
8.74
mm
3.00
mm
6.35
mm
9.37
mm
800 16.00
mm
  SMTSO-4.2-4ET-U 4.20
mm
1.53
mm
6.22
mm
8.74
mm
4.00
mm
6.35
mm
9.37
mm
675 16.00
mm
  SMTSO-4.2-6ET-U 4.20
mm
1.53
mm
6.22
mm
8.74
mm
6.00
mm
6.35
mm
9.37
mm
500 16.00
mm
  SMTSO-4.2-8ET-U 4.20
mm
1.53
mm
6.22
mm
8.74
mm
8.00
mm
6.35
mm
9.37
mm
375 16.00
mm
  SMTSO-4.2-10ET-U 4.20
mm
1.53
mm
6.22
mm
8.74
mm
10.00
mm
6.35
mm
9.37
mm
300 16.00
mm

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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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