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

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Thin Sheet Threaded Standoffs  TSO-U

Self Clinching Fasteners  •  Standoffs For Sheet Metal
American Standard (Inches) & Metric Sizes
• Self-clinching    • Permanently mounted    • Installed quickly and easily in metal panels
• No secondary operation needed prior to installation    • Outer sheet surface is flushed and closed
• Used for sheets as thin as 0.025" / 0.63 mm
American Standard Sizes:   • Series TSO-U
Metric Sizes:   • Series TSO-U
Series  TSO-U
Series  TSO-U  /  American Standard Sizes
      • Head Shape-  Hex
      • Sheet Hardness-  HRB 60 / HB 107 or Less
      • Material- Non Heat-Treated Carbon Steel
      • Finish-  Zinc Clear Plated per ASTM B633
Series TSO-U
American Standard Sizes
(SAE)
Part
Number
Thread "H"
Nom.
"L"
Body
Length
Style Min.
Sheet
Thickness
Hole
Size in
Sheet
"C"
Barrel
O.D.
Min.
Distance
to Edge
Mil-Spec
TSO-256-090ZI-U 2-56 3/16" 0.090" #1 0.025" 0.166" 0.165" 0.230" N/A
TSO-256-125ZI-U 2-56 3/16" 0.125" #1 0.025" 0.166" 0.165" 0.230" N/A
TSO-256-187ZI-U 2-56 3/16" 0.187" #1 0.025" 0.166" 0.165" 0.230" N/A
TSO-256-250ZI-U 2-56 3/16" 0.250" #1 0.025" 0.166" 0.165" 0.230" N/A
TSO-256-312ZI-U 2-56 3/16" 0.312" #2 0.025" 0.166" 0.165" 0.230" N/A
TSO-256-375ZI-U 2-56 3/16" 0.375" #2 0.025" 0.166" 0.165" 0.230" N/A
TSO-256-437ZI-U 2-56 3/16" 0.437" #3 0.025" 0.166" 0.165" 0.230" N/A
TSO-256-500ZI-U 2-56 3/16" 0.500" #3 0.025" 0.166" 0.165" 0.230" N/A
TSO-256-562ZI-U 2-56 3/16" 0.562" #3 0.025" 0.166" 0.165" 0.230" N/A
TSO-256-625ZI-U 2-56 3/16" 0.625" #3 0.025" 0.166" 0.165" 0.230" N/A
TSO-256-687ZI-U 2-56 3/16" 0.687" #3 0.025" 0.166" 0.165" 0.230" N/A
TSO-256-750ZI-U 2-56 3/16" 0.750" #3 0.025" 0.166" 0.165" 0.230" N/A
 
TSO-6256-090ZI-U 2-56 1/4" 0.090" #1 0.025" 0.213" 0.212" 0.270" N/A
TSO-6256-125ZI-U 2-56 1/4" 0.125" #1 0.025" 0.213" 0.212" 0.270" N/A
TSO-6256-187ZI-U 2-56 1/4" 0.187" #1 0.025" 0.213" 0.212" 0.270" N/A
TSO-6256-250ZI-U 2-56 1/4" 0.250" #1 0.025" 0.213" 0.212" 0.270" N/A
TSO-6256-312ZI-U 2-56 1/4" 0.312" #2 0.025" 0.213" 0.212" 0.270" N/A
TSO-6256-375ZI-U 2-56 1/4" 0.375" #2 0.025" 0.213" 0.212" 0.270" N/A
TSO-6256-437ZI-U 2-56 1/4" 0.437" #3 0.025" 0.213" 0.212" 0.270" N/A
TSO-6256-500ZI-U 2-56 1/4" 0.500" #3 0.025" 0.213" 0.212" 0.270" N/A
TSO-6256-562ZI-U 2-56 1/4" 0.562" #3 0.025" 0.213" 0.212" 0.270" N/A
TSO-6256-625ZI-U 2-56 1/4" 0.625" #3 0.025" 0.213" 0.212" 0.270" N/A
TSO-6256-687ZI-U 2-56 1/4" 0.687" #3 0.025" 0.213" 0.212" 0.270" N/A
TSO-6256-750ZI-U 2-56 1/4" 0.750" #3 0.025" 0.213" 0.212" 0.270" N/A
 
TSO-440-090ZI-U 4-40 3/16" 0.090" #1 0.025" 0.166" 0.165" 0.230" N/A
TSO-440-125ZI-U 4-40 3/16" 0.125" #1 0.025" 0.166" 0.165" 0.230" N/A
TSO-440-187ZI-U 4-40 3/16" 0.187" #1 0.025" 0.166" 0.165" 0.230" N/A
TSO-440-250ZI-U 4-40 3/16" 0.250" #1 0.025" 0.166" 0.165" 0.230" N/A
TSO-440-312ZI-U 4-40 3/16" 0.312" #2 0.025" 0.166" 0.165" 0.230" N/A
TSO-440-375ZI-U 4-40 3/16" 0.375" #2 0.025" 0.166" 0.165" 0.230" N/A
TSO-440-437ZI-U 4-40 3/16" 0.437" #2 0.025" 0.166" 0.165" 0.230" N/A
TSO-440-500ZI-U 4-40 3/16" 0.500" #3 0.025" 0.166" 0.165" 0.230" N/A
TSO-440-562ZI-U 4-40 3/16" 0.562" #3 0.025" 0.166" 0.165" 0.230" N/A
TSO-440-625ZI-U 4-40 3/16" 0.625" #3 0.025" 0.166" 0.165" 0.230" N/A
TSO-440-687ZI-U 4-40 3/16" 0.687" #3 0.025" 0.166" 0.165" 0.230" N/A
TSO-440-750ZI-U 4-40 3/16" 0.750" #3 0.025" 0.166" 0.165" 0.230" N/A
 
TSO-6440-090ZI-U 4-40 1/4" 0.090" #1 0.025" 0.213" 0.212" 0.270" N/A
TSO-6440-125ZI-U 4-40 1/4" 0.125" #1 0.025" 0.213" 0.212" 0.270" N/A
TSO-6440-187ZI-U 4-40 1/4" 0.187" #1 0.025" 0.213" 0.212" 0.270" N/A
TSO-6440-250ZI-U 4-40 1/4" 0.250" #1 0.025" 0.213" 0.212" 0.270" N/A
TSO-6440-312ZI-U 4-40 1/4" 0.312" #2 0.025" 0.213" 0.212" 0.270" N/A
TSO-6440-375ZI-U 4-40 1/4" 0.375" #2 0.025" 0.213" 0.212" 0.270" N/A
TSO-6440-437ZI-U 4-40 1/4" 0.437" #2 0.025" 0.213" 0.212" 0.270" N/A
TSO-6440-500ZI-U 4-40 1/4" 0.500" #3 0.025" 0.213" 0.212" 0.270" N/A
TSO-6440-562ZI-U 4-40 1/4" 0.562" #3 0.025" 0.213" 0.212" 0.270" N/A
TSO-6440-625ZI-U 4-40 1/4" 0.625" #3 0.025" 0.213" 0.212" 0.270" N/A
TSO-6440-687ZI-U 4-40 1/4" 0.687" #3 0.025" 0.213" 0.212" 0.270" N/A
TSO-6440-750ZI-U 4-40 1/4" 0.750" #3 0.025" 0.213" 0.212" 0.270" N/A
 
TSO-632-125ZI-U 6-32 1/4" 0.125" #1 0.025" 0.213" 0.212" 0.270" N/A
TSO-632-187ZI-U 6-32 1/4" 0.187" #1 0.025" 0.213" 0.212" 0.270" N/A
TSO-632-250ZI-U 6-32 1/4" 0.250" #1 0.025" 0.213" 0.212" 0.270" N/A
TSO-632-312ZI-U 6-32 1/4" 0.312" #1 0.025" 0.213" 0.212" 0.270" N/A
TSO-632-375ZI-U 6-32 1/4" 0.375" #2 0.025" 0.213" 0.212" 0.270" N/A
TSO-632-437ZI-U 6-32 1/4" 0.437" #2 0.025" 0.213" 0.212" 0.270" N/A
TSO-632-500ZI-U 6-32 1/4" 0.500" #2 0.025" 0.213" 0.212" 0.270" N/A
TSO-632-562ZI-U 6-32 1/4" 0.562" #3 0.025" 0.213" 0.212" 0.270" N/A
TSO-632-625ZI-U 6-32 1/4" 0.625" #3 0.025" 0.213" 0.212" 0.270" N/A
TSO-632-687ZI-U 6-32 1/4" 0.687" #3 0.025" 0.213" 0.212" 0.270" N/A
TSO-632-750ZI-U 6-32 1/4" 0.750" #3 0.025" 0.213" 0.212" 0.270" N/A
Series  TSO-U  /  Metric Sizes
      • Head Shape-  Hex
      • Sheet Hardness-  HRB 60 / HB 107 or Less
      • Material- Non Heat-Treated Carbon Steel
      • Finish-  Zinc Clear Plated per ASTM B633
Series TSO-U
Metric Sizes
Part
Number
Thread "H"
Nom.
"L"
Body
Length
Style Min.
Sheet
Thickness
Hole
Size in
Sheet
"C"
Barrel
O.D.
Min.
Distance
to Edge
Mil-Spec
TSO-M25-200ZI-U M2.5 x 0.45 4.80
mm
2.00
mm
#1 0.63
mm
4.22
mm
4.20
mm
5.80
mm
N/A
TSO-M25-300ZI-U M2.5 x 0.45 4.80
mm
3.00
mm
#1 0.63
mm
4.22
mm
4.20
mm
5.80
mm
N/A
TSO-M25-400ZI-U M2.5 x 0.45 4.80
mm
4.00
mm
#1 0.63
mm
4.22
mm
4.20
mm
5.80
mm
N/A
TSO-M25-600ZI-U M2.5 x 0.45 4.80
mm
6.00
mm
#1 0.63
mm
4.22
mm
4.20
mm
5.80
mm
N/A
TSO-M25-800ZI-U M2.5 x 0.45 4.80
mm
8.00
mm
#2 0.63
mm
4.22
mm
4.20
mm
5.80
mm
N/A
TSO-M25-1000ZI-U M2.5 x 0.45 4.80
mm
10.00
mm
#3 0.63
mm
4.22
mm
4.20
mm
5.80
mm
N/A
TSO-M25-1200ZI-U M2.5 x 0.45 4.80
mm
12.00
mm
#3 0.63
mm
4.22
mm
4.20
mm
5.80
mm
N/A
TSO-M25-1400ZI-U M2.5 x 0.45 4.80
mm
14.00
mm
#3 0.63
mm
4.22
mm
4.20
mm
5.80
mm
N/A
TSO-M25-1600ZI-U M2.5 x 0.45 4.80
mm
16.00
mm
#3 0.63
mm
4.22
mm
4.20
mm
5.80
mm
N/A
TSO-M25-1800ZI-U M2.5 x 0.45 4.80
mm
18.00
mm
#3 0.63
mm
4.22
mm
4.20
mm
5.80
mm
N/A
TSO-M25-1900ZI-U M2.5 x 0.45 4.80
mm
19.00
mm
#3 0.63
mm
4.22
mm
4.20
mm
5.80
mm
N/A
 
TSO-6M25-200ZI-U M2.5 x 0.45 6.40
mm
2.00
mm
#1 0.63
mm
5.41
mm
5.39
mm
7.10
mm
N/A
TSO-6M25-300ZI-U M2.5 x 0.45 6.40
mm
3.00
mm
#1 0.63
mm
5.41
mm
5.39
mm
7.10
mm
N/A
TSO-6M25-400ZI-U M2.5 x 0.45 6.40
mm
4.00
mm
#1 0.63
mm
5.41
mm
5.39
mm
7.10
mm
N/A
TSO-6M25-600ZI-U M2.5 x 0.45 6.40
mm
6.00
mm
#1 0.63
mm
5.41
mm
5.39
mm
7.10
mm
N/A
TSO-6M25-800ZI-U M2.5 x 0.45 6.40
mm
8.00
mm
#2 0.63
mm
5.41
mm
5.39
mm
7.10
mm
N/A
TSO-6M25-1000ZI-U M2.5 x 0.45 6.40
mm
10.00
mm
#3 0.63
mm
5.41
mm
5.39
mm
7.10
mm
N/A
TSO-6M25-1200ZI-U M2.5 x 0.45 6.40
mm
12.00
mm
#3 0.63
mm
5.41
mm
5.39
mm
7.10
mm
N/A
TSO-6M25-1400ZI-U M2.5 x 0.45 6.40
mm
14.00
mm
#3 0.63
mm
5.41
mm
5.39
mm
7.10
mm
N/A
TSO-6M25-1600ZI-U M2.5 x 0.45 6.40
mm
16.00
mm
#3 0.63
mm
5.41
mm
5.39
mm
7.10
mm
N/A
TSO-6M25-1800ZI-U M2.5 x 0.45 6.40
mm
18.00
mm
#3 0.63
mm
5.41
mm
5.39
mm
7.10
mm
N/A
TSO-6M25-1900ZI-U M2.5 x 0.45 6.40
mm
19.00
mm
#3 0.63
mm
5.41
mm
5.39
mm
7.10
mm
N/A
 
TSO-M3-200ZI-U M3 x 0.5 4.80
mm
2.00
mm
#1 0.63
mm
4.22
mm
4.20
mm
5.80
mm
N/A
TSO-M3-300ZI-U M3 x 0.5 4.80
mm
3.00
mm
#1 0.63
mm
4.22
mm
4.20
mm
5.80
mm
N/A
TSO-M3-400ZI-U M3 x 0.5 4.80
mm
4.00
mm
#1 0.63
mm
4.22
mm
4.20
mm
5.80
mm
N/A
TSO-M3-600ZI-U M3 x 0.5 4.80
mm
6.00
mm
#1 0.63
mm
4.22
mm
4.20
mm
5.80
mm
N/A
TSO-M3-800ZI-U M3 x 0.5 4.80
mm
8.00
mm
#2 0.63
mm
4.22
mm
4.20
mm
5.80
mm
N/A
TSO-M3-1000ZI-U M3 x 0.5 4.80
mm
10.00
mm
#2 0.63
mm
4.22
mm
4.20
mm
5.80
mm
N/A
TSO-M3-1200ZI-U M3 x 0.5 4.80
mm
12.00
mm
#3 0.63
mm
4.22
mm
4.20
mm
5.80
mm
N/A
TSO-M3-1400ZI-U M3 x 0.5 4.80
mm
14.00
mm
#3 0.63
mm
4.22
mm
4.20
mm
5.80
mm
N/A
TSO-M3-1600ZI-U M3 x 0.5 4.80
mm
16.00
mm
#3 0.63
mm
4.22
mm
4.20
mm
5.80
mm
N/A
TSO-M3-1800ZI-U M3 x 0.5 4.80
mm
18.00
mm
#3 0.63
mm
4.22
mm
4.20
mm
5.80
mm
N/A
TSO-M3-1900ZI-U M3 x 0.5 4.80
mm
19.00
mm
#3 0.63
mm
4.22
mm
4.20
mm
5.80
mm
N/A
 
TSO-6M3-200ZI-U M3 x 0.5 6.40
mm
2.00
mm
#1 0.63
mm
5.41
mm
5.39
mm
7.10
mm
N/A
TSO-6M3-300ZI-U M3 x 0.5 6.40
mm
3.00
mm
#1 0.63
mm
5.41
mm
5.39
mm
7.10
mm
N/A
TSO-6M3-400ZI-U M3 x 0.5 6.40
mm
4.00
mm
#1 0.63
mm
5.41
mm
5.39
mm
7.10
mm
N/A
TSO-6M3-600ZI-U M3 x 0.5 6.40
mm
6.00
mm
#1 0.63
mm
5.41
mm
5.39
mm
7.10
mm
N/A
TSO-6M3-800ZI-U M3 x 0.5 6.40
mm
8.00
mm
#2 0.63
mm
5.41
mm
5.39
mm
7.10
mm
N/A
TSO-6M3-1000ZI-U M3 x 0.5 6.40
mm
10.00
mm
#2 0.63
mm
5.41
mm
5.39
mm
7.10
mm
N/A
TSO-6M3-1200ZI-U M3 x 0.5 6.40
mm
12.00
mm
#3 0.63
mm
5.41
mm
5.39
mm
7.10
mm
N/A
TSO-6M3-1400ZI-U M3 x 0.5 6.40
mm
14.00
mm
#3 0.63
mm
5.41
mm
5.39
mm
7.10
mm
N/A
TSO-6M3-1600ZI-U M3 x 0.5 6.40
mm
16.00
mm
#3 0.63
mm
5.41
mm
5.39
mm
7.10
mm
N/A
TSO-6M3-1800ZI-U M3 x 0.5 6.40
mm
18.00
mm
#3 0.63
mm
5.41
mm
5.39
mm
7.10
mm
N/A
TSO-6M3-1900ZI-U M3 x 0.5 6.40
mm
19.00
mm
#3 0.63
mm
5.41
mm
5.39
mm
7.10
mm
N/A
 
TSO-M35-300ZI-U M3.5 x 0.6 6.40
mm
3.00
mm
#1 0.63
mm
5.41
mm
5.39
mm
7.10
mm
N/A
TSO-M35-400ZI-U M3.5 x 0.6 6.40
mm
4.00
mm
#1 0.63
mm
5.41
mm
5.39
mm
7.10
mm
N/A
TSO-M35-600ZI-U M3.5 x 0.6 6.40
mm
6.00
mm
#1 0.63
mm
5.41
mm
5.39
mm
7.10
mm
N/A
TSO-M35-800ZI-U M3.5 x 0.6 6.40
mm
8.00
mm
#1 0.63
mm
5.41
mm
5.39
mm
7.10
mm
N/A
TSO-M35-1000ZI-U M3.5 x 0.6 6.40
mm
10.00
mm
#2 0.63
mm
5.41
mm
5.39
mm
7.10
mm
N/A
TSO-M35-1200ZI-U M3.5 x 0.6 6.40
mm
12.00
mm
#2 0.63
mm
5.41
mm
5.39
mm
7.10
mm
N/A
TSO-M35-1400ZI-U M3.5 x 0.6 6.40
mm
14.00
mm
#3 0.63
mm
5.41
mm
5.39
mm
7.10
mm
N/A
TSO-M35-1600ZI-U M3.5 x 0.6 6.40
mm
16.00
mm
#3 0.63
mm
5.41
mm
5.39
mm
7.10
mm
N/A
TSO-M35-1800ZI-U M3.5 x 0.6 6.40
mm
18.00
mm
#3 0.63
mm
5.41
mm
5.39
mm
7.10
mm
N/A
TSO-M35-1900ZI-U M3.5 x 0.6 6.40
mm
19.00
mm
#3 0.63
mm
5.41
mm
5.39
mm
7.10
mm
N/A

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