Pattern 121 - To BS 4278: 1984 Table 1

collared eyebolts pattern 121 - To BS 4278:1984 Table 1

Maximum load 'W' to be lifted
by a pair of eyebolts when angle between the sling legs is 'Ø'

ØA Thread
ØB
D
ØE
ØF
G
H
WLL - tonnes
Wt. kg's
M 12
22
7
15
9
20
18
0.4
0.06
M 16
29
10
20
12
26
23
0.8
0.15
M 20
40
14
27
16
36
32
1.6
0.4
M 24
52
17
35
21
46
40
2.5
0.9
M 30
65
22
44
26
58
51
4
1.6
M 36
81
27
54
32
72
63
6.3
3.2
M 42
90
30
60
36
80
70
8
6.3
M 48
101
34
68
40
90
79
10
6.5
M 52
115
38
76
46
102
89
12.5
9.6
M 56
128
43
86
51
114
100
16
13
M 64
144
48
96
58
128
112
20
18
M 72
162
54
108
65
144
126
25
31

WWL=Working Load Limit (Straight pull only)
Factor of Safety 5:1 E.g. WLL 4t Proof Loaded 8t Break Load 20t
(Single eyebolt vertical) tonne f
0°<0<30° tonne f
30°<0<60° tonne f
60°<0<90° tonne f
1.6
2
1.25
0.8
2.5
3.2
2
1.25
4
5
3.2
2
6.3
8
5
3.2
8
10
6.38
4
10
12.5
8
5
12.5
16
10
6.3
16
20
12.5
8
20
25
16
10
25
32
20
12.5
Reduction Factor
0.63
0.4
0.25
 

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