Thread Standoffs
Thread Code
Rec Min. Sheet Thickness
Hole size In Sheet
+.008
C
+.000
-.005
D
Min. Thread Depth
H
Nom.
256
.025
.166
.165
.200
.187
6256
.025
.213
.212
.250
440
.025
.166
.165
.220
.187
6440
.025
.213
.212
.250
632
.025
.213
.212
.270
.250
Thread Code
Rec Min. Sheet Thickness
Hole size In Sheet
+0.08
C
-0.13
D
Min. Thread Depth
H
Nom.
M2.5
0.63
4.22
4.19
5.2
4.75
3.5M2.5
0.63
5.41
5.39
6.35
M3
0.63
4.22
4.19
6.2
4.75
3.5M3
0.63
5.41
5.4
6.35
M3.5
0.63
5.41
5.4
7.0
6.35
All dimensions are in inches (Size Unit: inch)
UNIFIED
Thread Size
Type
Thread Code
Length "L" ±.003 For other lengths/thread depth data see chat below
Min.Dist Hole C/L To Edge
Steel
Stainless Steel
Aluminum
.090
.125
.187
.250
.312
.375
.437
.500
.562
.625
.687
.750
Length Code ( Length "L" without decimal point )
.086-56(#2-56)
TSO
TSOS
TSOA
256
090(1)
125(1)
187(1)
250(1)
312(2)
375(2)
437(3)
500(3)
562(3)
625(3)
687(3)
750(3)
.23
6256(4)
.27
.112-40(#4-40)
TSO
TSOS
TSOA
440
090(1)
125(1)
187(1)
250(1)
312(2)
375(2)
437(2)
500(3)
562(3)
625(3)
687(3)
750(3)
.23
6440(4)
.27
.138-32(#6-32)
TSO
TSOS
TSOA
632
/
125(1)
187(1)
250(1)
312(1)
375(2)
437(2)
500(2)
562(3)
625(3)
687(3)
750(3)
.27
All dimensions are in millimeters (Size Unit: mm)
METRIC
Thread Size
Type
Thread Code
Length "L" ±0.08 For other lengths/thread depth data see chat below
Min.Dist Hole C/L To Edge
Steel
Stainless Steel
Aluminum
2
3
4
6
8
10
12
14
16
18
19
Length Code ( Length "L" without decimal point )
M2.5X0.45
TSO
TSOS
TSOA
M2.5
200(1)
300(1)
400(1)
600(1)
800(2)
1000(3)
1200(3)
1400(3)
1600(3)
1800(3)
1900(3)
5.8
3.5M2.5(4)
7.1
M3X0.5
TSO
TSOS
TSOA
M3
200(1)
300(1)
400(1)
600(1)
800(2)
1000(2)
1200(3)
1400(3)
1600(3)
1800(3)
1900(3)
5.8
3.5M3(4)
7.1
M3.5X0.6
TSO
TSOS
TSOA
M3.5
/
300(1)
400(1)
600(1)
800(1)
1000(2)
1200(2)
1400(3)
1600(3)
1800(3)
1900(3)
7.1
Style#1.(2)Style#2.(3)Style#3.(N/A)Not Available
Standoffs with thread codes 6256 ,6440,3.5M2.5 and 3.5M3 offer greater wall thickness for thread size 256,440,M2.5 and M3 respectively.