Concealed-Head Standoffs
All dimensions are in inches (Size Unit: inch)
UNIFIED
Thread Size
Type
Thread Code
Length "L" +.002-.005
( Length Code is in 16ths of an inch )
Min.Sheet Thickness
Blind Mounting Hole Dia
+.003
-.000
Min. Depth Of Blind Hole (4)
Min. Depth Full Thread F
A
Max.
B Max.
(5)
C
Max.
H
Nom.
Min.Dist Hole C/L To Edge
Stainless Steel
.187
.250
.312
.375
.500
.625
.750
.100
.112-40(#4-40)
CSS
440
3(1)
4(2)
5(2)
6(2)
8(3)
10(3)
12(3)
16(3)
.062
.213
.043
.188
.041
.165
.212
.250
.188
CSOS
.093
.075
.072
.138-32(#6-32)
CSS
632
3(1)
4(1)
5(2)
6(2)
8(3)
10(3)
12(3)
16(3)
.062
.290
.043
.250
.041
.213
.289
.312
.219
CSOS
.093
.075
.072
.164-32(#8-32)
CSS
832
3(1)
4(1)
5(2)
6(2)
8(3)
10(3)
12(3)
16(3)
.062
.312
.043
.250
.041
.245
.311
.344
.250
CSOS
.093
.075
.072
.190-32(#10-32)
CSS
032
3(1)
4(1)
5(1)
6(1)
8(2)
10(3)
12(3)
16(3)
.062
.344
.043
.375
.041
.290
.343
.375
.281
CSOS
.093
.075
.072
.250-20(1/4-20)
CSS
0420
3(1)
4(1)
5(1)
6(1)
8(2)
10(2)
12(3)
16(3)
.062
.390
.043
.375
.041
.354
.389
.438
.375
CSOS
.093
.075
.072
All dimensions are in millimeters (Size Unit: mm)
METRIC
Thread Size
Type
Thread Code
Length Code "L" +.0.05-0.13
( Length Code is in millimeters )
Min.Sheet Thickness
Blind Mounting Hole Dia
+0.08
Min. Depth Of Blind Hole (4)
Min. Depth Full Thread F
A
Max.
B Max.
(5)
C
Max.
H
Nom.
Min.Dist Hole C/L To Edge
Stainless Steel
M3X0.5
CSS
M3
4(1)
6(1)
8(2)
10(3)
12(3)
16(3)
20(3)
25(3)
1.6
5.41
1.1
5
1.04
4.2
5.39
6.35
4.8
CSOS
8(3)
2.4
1.91
1.83
M4X0.7
CSS
M4
4(1)
6(1)
8(2)
10(2)
12(3)
16(3)
20(3)
25(3)
1.6
7.92
1.1
6.5
1.04
6.23
7.9
8.74
6.4
CSOS
10(3)
2.4
1.91
1.83
M5X0.8
CSS
M5
4(1)
6(1)
8(1)
10(2)
12(2)
16(3)
20(3)
25(3)
1.6
8.74
1.1
9.6
1.04
7.37
8.72
9.53
7.2
CSOS
2.4
1.91
1.83
M6X1.0
CSS
M6
4(1)
6(1)
8(1)
10(2)
12(2)
16(3)
20(3)
25(3)
2.4
9.9
1.91
9.6
1.83
9
9.89
11.11
9.5
Blind mounting holes may be deeper than minimuns except where sheet material is at or near minimun thickness.
Fasters should always be installed so the flange is flush with the surface of the sheet.
If standoff is used as a bushing, the hole in attached part must not exceed "B" plus .020"/0.51mm.