Gibraltar SP11933 Lifting Eye Bolt 4000 Lb 5/8-11 Thread

Product Description

The GIBRALTAR SP11933 is a without-shoulder lifting eye bolt rated for 4,000 lb capacity, threaded 5/8-11, and machined from C-1035 grade steel. The shank is fully threaded at 2.5 inches, making this bolt suitable for through-bolt installations where a nut seats against a work surface rather than a shoulder. The eye provides a secure attachment point for hooks, shackles, and rigging hardware. Riggers, millwrights, and maintenance mechanics use this hardware for vertical and in-line lifting applications in industrial and commercial settings where a clean, shoulderless profile is required.

This eye bolt is intended for applications where the load is applied along the axis of the bolt, such as lifting machinery components, structural assemblies, or equipment frames. The without-shoulder design requires the installer to use a backing nut and washer on the underside of the load to distribute clamping force. It is commonly specified in manufacturing plants, warehouses, and mechanical rooms where frequent rigging points are needed. The 5/8-11 thread size is a standard UNC coarse thread that accepts widely available hardware.

Key Features

• 4,000 lb rated lifting capacity for vertical in-line loads
• Without-shoulder design allows flush through-bolt mounting with a backing nut
• Fully threaded 2.5-inch shank provides flexible engagement depth
• 5/8-11 UNC coarse thread for broad hardware compatibility
• C-1035 grade steel construction for strength and durability
• Eye inside diameter of 1.375 inches accommodates standard hooks and shackles

Compatibility

Designed for use with standard 5/8-11 UNC threaded hardware in rigging and lifting applications. A backing nut and washer are required for proper installation when using the without-shoulder configuration.

Installation Notes

Installation should be performed by a qualified rigger or mechanic familiar with ASME B30.26 rigging hardware standards. Without-shoulder eye bolts must be loaded strictly along the bolt axis — angular or side loading significantly reduces rated capacity and can cause failure. Always back the bolt with a properly torqued nut and washer against a flat bearing surface. De-energize and lock out any powered equipment before installing or removing rigging hardware.