Pattern 181

tubular rigging screw pattern 181

Ø A Thread
B
ØC
ØE
G
J
K
ØL
M
N
O
WLL
Wt. - Kg’s
M 12
230
27
10
24
9
19
10
35
334
527
500 Kgs
1
M 16
230
27
10
32
10
22
12
51
378
559
750 Kgs
1.5
M 20
230
34
10
36
11
23
16
48
380
549
1.25 t
2.4
M 22
300
42
12
40
13
26
20
60
464
703
2 t
3.8
M 27
360
45
14
52
15
32
22
70
540
815
3 t
6
M 30
380
51
14
58
17
34
27
70
580
870
4 t
9
M 33
380
51
16
64
19
38
30
70
608
890
5 t
10
M 39
410
60
16
68
22
48
33
90
668
958
6 t
14
M 42
410
76
20
80
24
50
36
110
690
962
7.5 t
22
M 48
410
76
20
92
26
54
42
127
748
1,002
10 t
29
M 56
410
95
22
108
30
67
48
135
780
1,010
15 t
39
M 64
410
101
25
120
32
70
56
135
790
995
20 t
45
M 72
460
120
25
140
42
88
64
150
860
1,089
25 t
81
M 76
460
127
30
152
50
110
72
185
1,000
1,216
30 t
110
M 85
510
132
30
170
50
110
80
185
1,060
1,298
40 t
160
M 100
510
152
30
200
58
115
90
220
1,108
1,298
50 t
270

WLL = Working Load Limit (straight pull only)
Factor Of Safety 5 : 1 E.g. WLL 15 t Proof Loaded 30 t Break Load 75 t

NOTE
# - The oval eye fittings used in the M76 rigging screw are from the M85 tooling, threaded M76
 

Options available:

  • Finish ; Self colour, galvanised TCA or Spun.
  • Longer lengths ; based on the standard & meeting the performance requirements.
  • Smaller sizes to the BS 4429 are available on request.