Thru-Hole Thread Standoffs
Thread Code
Rec Min. Sheet Thickness
C
-.005
H
Nom.
B
±.005
Hole size In Sheet
+.003
440
.040
.165
.187
.125
.166
6440
.040
.212
.250
.125
.213
632
.040
.212
.250
.156
.213
8632
.050
.280
.312
.156
.281
832
.050
.280
.312
.188
.281
032
.050
.280
.312
.203
.281
Thread Code
Rec Min. Sheet Thickness
C
-0.13
H
Nom.
B
±0.13
Hole size In Sheet
+0.08
M2.5
1.02
4.2
4.75
3.0
4.22
M3
1.02
4.2
4.75
3.2
4.22
3.5M3
1.02
5.39
6.35
3.2
5.41
M3.5
1.02
5.39
6.35
3.9
5.41
M4
1.27
5.98
7.0
4.8
6.0
3.5M4
1.27
7.12
8.0
4.8
7.14
M5
1.27
7.12
8.0
5.35
7.14
M6
1.3
8.72
10.0
6.4
8.75
All dimensions are in inches (Size Unit: inch)
UNIFIED
Thread Size
Type
Thread Code
Length "L" +.002 -.005 (Length code is in 32ths of an inch )
Min.Dist Hole C/L To Edge
Steel
Stainless Steel
Aluminum
.125
.187
.250
.312
.375
.437
.500
.562
.625
.687
.750
.812
.875
.112-40(#4-40)
SO
SOS
SOA
440
4
6
8
10
12
14
16
18
20
22
/
/
/
0.23
6440
0.27
.138-32(#6-32)
SO
SOS
SOA
632
4
6
8
10
12
14
16
18
20
22
24
26
28
0.27
8632
0.31
.164-32(#8-32)
SO
SOS
SOA
832
4
6
8
10
12
14
16
18
20
22
24
26
28
0.31
.190-32(#10-32)
SO
SOS
SOA
032
4
6
8
10
12
14
16
18
20
22
24
26
28
0.31
D Dimension ±.010
None
.187
.312
.437
All dimensions are in millimeters (Size Unit: mm)
METRIC
Thread Size
Type
Thread Code
Length "L" +0.05 -0.13 (Length Code is in millimeters )
Min.Dist Hole C/L To Edge
Steel
Stainless Steel
Aluminum
M2.5X0.45
SO
SOS
SOA
M2.5
3
4
6
8
10
12
14
16
18
/
/
/
/
6
M3X0.5
SO
SOS
SOA
M3
3
4
6
8
10
12
14
16
18
/
/
/
/
6
3.5M3
6.8
M3.5X0.6
SO
SOS
SOA
M3.5
3
4
6
8
10
12
14
16
18
/
/
/
/
6.8
M4X0.7
SO
SOS
SOA
M4
3
4
6
8
10
12
14
16
18
20
22
25
/
7.5
3.5M4
8
M5X0.8
SO
SOS
SOA
M5
3
4
6
8
10
12
14
16
18
20
22
25
/
8
M6X1.0
SO
SOS
SOA
M6
3
4
6
8
10
12
14
16
18
20
22
25
/
9
D Dimension ±0.25
None
4
8
11