Hook Bolts

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HOOK BOLTSHook bolts are very commonly used to attach lighter rails (usually up to 85 lbs.) to channels (as shown at left) or directly onto a crane rail beam. They are usually threaded to allow up to one half inch lateral adjustment in either direction, and come complete with hex nuts and lockwashers. When ordering, specify rail section, bolt diameter, and the size and weight of supporting beam or channel.Hook bolts are typically drilled in pairs four inches apart every two feet. Unless otherwise speci˜ed, we drill these holes 1/8 inch larger than the diameter of the hook bolt, and the spacing will be as shown in the table below. Typically the hook bolts are the same diameter as that used for the splice bars. (Hole elevation is the same as for splice bar holes.)Remaining holeson 24 inches centersABBDDCCEE*See pages I-5 thru I-12 for rail end drilling.Hook Bolt Spacing * Rail Weight A B C D E No. holes per rail 12 lb to 60 lb 20 feet 14 inches 22 inches 12 inches 4 inches 20 12 lb to 60 lb 30 feet 14 inches 22 inches 12 inches 4 inches 30 25 lb to 60 lb 40 feet 14 inches 22 inches 12 inches 4 inches 40 60 lb to 80 lb 33 feet 18 inches 24 inches 16 inches 4 inches 32 80 lb to 85 lb 39 feet 18 inches 24 inches 16 inches 4 inches 38