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Twisted Hook
Hook Swivel
Figure 5-1 Top & Bottom Hook Checks
Table 5-4 Top Hook & Bottom Hook Dimensions
“k” Measured When New:
Top: _________________________
Bottom: ______________________
Product Code
Nominal "k"
Dimension*
inch (mm)
"u" Dimension
inch (mm)
"t" Dimension
inch (mm)
Standard
Discard
Standard
Discard
CB005 1.76 (44.6) 0.67 (17.0) 0.60 (15.3) 0.48 (12.1) 0.43 (10.9)
CB010 1.92 (48.8) 0.86 (21.8) 0.77 (19.6) 0.63 (16.0) 0.57 (14.4)
CB015 2.22 (56.3) 1.04 (26.5) 0.94 (23.9) 0.77 (19.5) 0.69 (17.6)
CB020 2.36 (59.9) 1.18 (30.0) 1.06 (27.0) 0.86 (21.8) 0.77 (19.6)
CB025 2.52 (64.1) 1.32 (33.5) 1.19 (30.2) 0.96 (24.3) 0.86 (21.9)
CB030 2.72 (69.1) 1.48 (37.5) 1.33 (33.8) 1.07 (27.2) 0.97 (24.5)
CB050 3.06 (77.8) 1.87 (47.5) 1.69 (42.8) 1.36 (34.5) 1.22 (31.1)
CB080 4.56 (115.9) 2.48 (63.0) 2.23 (56.7) 1.87 (47.5) 1.69 (42.8)
CB100 4.56 (115.9) 2.48 (63.0) 2.23 (56.7) 1.87 (47.5) 1.69 (42.8)
CB150 5.52 (140.2) 3.15 (80.0) 2.84 (72.0) 1.97 (50.0) 1.77 (45.0)
CB200 5.62 (142.8) 3.54 (90.0) 3.19 (81.0) 2.21 (56.0) 2.09 (53.1)
*These values are nominal since the dimension is not controlled to a tolerance. The "k"
dimension should be measured when the hook is new - this becomes a reference measurement.
Subsequent measurements are compared to this reference to make determinations about hook
deformation/stretch. See Section 5.7, “Hooks - Stretch”.