METRIC
SLOTTED MACHINE SCREWS TO BS 4183: 1967
Nominal Size
|
Pitch
|
CSK.
AND RSK. CSK. |
PAN
HEADS |
CHEESE
HEADS |
Dia.
of Head |
Height
of
Raise |
Max.
Land on
Min. Dia. |
Dia.
of Head |
Depth |
Dia.
of Head |
Depth |
Max. |
Min. |
Max. |
Min. |
Max. |
Min. |
Max. |
Min. |
Max. |
Min. |
| M2 |
0.40 |
4.40 |
3.50 |
0.50 |
0.25 |
- |
- |
- |
- |
3.80 |
3.50 |
1.30 |
1.16 |
| M2.5 |
0.45 |
5.50 |
4.45 |
0.60 |
0.31 |
5.0 |
4.70 |
1.50 |
1.36 |
4.50 |
4.20 |
1.60 |
1.46 |
| M3 |
0.50 |
6.30 |
5.25 |
0.75 |
0.37 |
6.0 |
5.70 |
1.80 |
1.66 |
5.50 |
5.20 |
2.0 |
1.86 |
| M3.5 |
0.60 |
7.35 |
6.12 |
0.90 |
0.44 |
7.00 |
6.64 |
2.10 |
1.96 |
6.00 |
5.70 |
2.40 |
2.26 |
| M4 |
0.70 |
8.40 |
7.04 |
1.00 |
0.50 |
8.00 |
7.64 |
2.40 |
2.26 |
7.00 |
6.64 |
2.60 |
2.46 |
| M5 |
0.80 |
10.00 |
8.75 |
1.25 |
0.62 |
10.00 |
9.64 |
3.00 |
2.86 |
8.50 |
8.14 |
3.30 |
3.12 |
| M6 |
1.00 |
12.00 |
10.50 |
1.50 |
0.75 |
12.00 |
11.57 |
3.60 |
3.42 |
10.00 |
9.64 |
3.90 |
3.72 |
| M8 |
1.25 |
16.00 |
14.00 |
2.00 |
1.00 |
16.00 |
15.57 |
4.80 |
4.62 |
13.00 |
12.57 |
5.00 |
4.82 |
| M10 |
1.50 |
20.00 |
17.50 |
2.50 |
1.25 |
20.00 |
19.48 |
6.00 |
5.82 |
16.00 |
15.57 |
6.00 |
5.82 |
| M12 |
1.75 |
24.00 |
21.00 |
1.50 |
- |
- |
- |
- |
- |
18.00 |
17.57 |
7.00 |
6.78 |
For information on imperial sizes for the following
screws, please contact us
- Unified Slotted Machine Screws to BS 1981: 1972
- B.A. Slotted Machine Screws to BS 57: 1951
- Whit & B.S.F. Slotted Machine Screws to BS 450:
1958
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