240 / 816
SECTION 5 - HAND KNOBS
WDS
WDS
www.wdsltd.co.uk5-1
&
0845 606 66 77
•
:
www.wdsltd.co.uk•
*
sales@wdsltd.co.ukKnurled Locking
Screw
WDS 521
MATERIAL
-
Steel BS.970 Gr.220M07
Chemical black finish
See 817 Series for this part in
Stainless Steel
D
L
D1
D2
E
H
(g)
WDS No.
M4
10
16
8
3.5
9.5
8
521-20110
M4
15
16
8
3.5
9.5
15
521-20115
M4
20
16
8
3.5
9.5
15
521-20120
M5
10
19
10
4
11.5
14
521-20210
M5
15
19
10
4
11.5
15
521-20215
M5
20
19
10
4
11.5
15
521-20220
M6
15
25
12
5
15
31
521-20315
M6
20
25
12
5
15
32
521-20320
M6
25
25
12
5
15
33
521-20325
M8
15
28
16
6
18
50
521-20415
M8
20
28
16
6
18
55
521-20420
M8
25
28
16
6
18
58
521-20425
M10
25
35
20
8
23
105
521-20525
M10
30
35
20
8
23
110
521-20530
M10
40
35
20
8
23
120
521-20540
M12
25
40
22
10
25
150
521-20625
M12
40
40
22
10
25
175
521-20640
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