End fittings are Quenched and Tempered, bodies heat treated by normalizing.
Turnbuckle eyes are forged and elongated, by design, to maximize easy attachment in system and minimize stress in the eye. For turnbuckle size ¼” through 2 ½ ” a shackle one size smaller can be revved through eye.
Modified BSW thread for improved fatigue properties.
Turnbuckles Recommended for straight or in-line pull only.
Lock Nuts available for all sizes.
All the requirements of Federal Specification
Thread Diameter
& Take Up
Working
Load Limit*
t
Weight
each
Kg.
Dimensions (mm)
(in.)
(mm)
A
J
Open
K
Closed
M
Open
N
Closed
R
S
X
closed
BB
3/8 x 6
9.53 x 152
.54
.34
9.53
444
292
461
309
28.5
13.5
64.0
152
½ x 6
12.7 x 152
1.00
.73
12.7
485
332
507
355
36.6
18.3
82.0
152
5/8 x 9
15.9 x 229
1.59
1.42
15.9
677
449
703
475
44.5
22.2
99.1
229
5/8 x 12
15.9 x 305
1.59
1.59
15.9
830
525
856
551
44.5
22.2
99.1
305
¾ x 12
19.1 x 305
2.36
2.46
19.1
873
569
905
600
53.0
25.4
119
305
¾ x 18
19.1 x 457
2.36
3.29
19.1
1178
721
1210
752
54.0
25.4
119
457
7/8 x 12
22.2 x 305
3.27
3.67
22.2
897
592
935
630
60.5
31.8
130
305
7/8 x 18
22.2 x 457
3.27
4.51
22.2
1202
745
1240
783
60.5
31.8
130
457
1 x 12
25.4 x 305
4.54
5.41
25.4
964
660
1015
704
76.0
36.6
162
305
1 x 18
25.4 x 457
4.54
6.35
25.4
1269
812
1314
857
76.0
36.6
162
457
1 x 24
25.4 x 610
4.54
7.82
25.4
1574
965
1619
1009
76.0
36.6
162
305
1 ¼ x 18
38.1 x 457
6.89
10.4
31.8
1329
872
1386
929
90.5
46.0
196
457
1 ¼ x 24
31.8 x 610
6.89
12.3
31.8
1634
1024
1691
1081
90.5
46.0
196
610
1 ½ x 18
38.1 x 457
9.71
14.1
38.1
1384
927
1448
991
103
54.0
219
457
1 ½ x 24
38.1 x 610
9.71
17.0
38.1
1689
1080
1753
1143
103
54.0
219
610
1 ¾ x 18
44.5 x 457
12.70
23.8
44.5
1457
1000
1534
1077
117
60.5
254
457
1 ¾ x 24
44.5 x 610
12.70
26.3
44.5
1762
1153
1839
1229
117
60.5
254
610
2 x 24
51.0 x 610
16.78
38.7
51.0
1923
1313
2011
1402
146
68.5
333
610
2 ½ x 24
63.5 x 610
26.22
65
63.5
1997
1387
2099
1489
165
79.5
350
610
2 ¾ x 24
70.0 x 610
34.02
88
70.0
2057
1448
2172
1562
178
82.5
387
610
* Proof load is 2 times Working Load Limit. Ultimate Load is 5 times Working Load Limit.
