Gibraltar 12931 2 Fixed Shoulder Eye Bolt 4000 Lb 5/8-11

Product Description

The GIBRALTAR 12931 2 is a fixed lifting eye bolt with shoulder, designed for rated vertical overhead lifting and load-securing applications. It is manufactured from C-1035 forged steel, providing the structural integrity required for industrial and commercial rigging work. The bolt carries a 4,000 lb lifting capacity and features a 5/8-11 thread with a 3-inch fully threaded shank. The shoulder design transfers load laterally to a bearing surface, making it suitable for applications where the load is applied in line with the bolt axis. Installation and inspection are typically performed by qualified riggers, millwrights, or maintenance personnel.

This eye bolt is used in industrial, construction, and mechanical maintenance settings where a secure, fixed anchor point is needed for lifting or pulling loads. The shoulder style is appropriate for through-hole installations where the shoulder seats flush against a surface to distribute load. Common applications include machinery rigging, structural lifting, and tie-down anchor points. The fully threaded 3-inch shank provides flexibility in material thickness and hardware stacking during installation.

Key Features

• 4,000 lb lifting capacity rated for vertical in-line loads
• C-1035 forged steel construction for high-strength performance
• 5/8-11 thread size, fully threaded over a 3-inch shank length
• Shoulder design seats against mounting surface to control load bearing
• Eye inside diameter of 1-3/8 inches accommodates standard shackles and hooks
• Eye outside diameter of 2-1/2 inches for positive grip clearance

Compatibility

Designed as a standard fixed shoulder eye bolt for use in any application requiring a 5/8-11 threaded anchor point with a rated 4,000 lb lifting capacity in vertical load orientation.

Installation Notes

Installation should be performed by a qualified rigger or licensed tradesperson familiar with applicable ASME B30.26 rigging hardware standards. Always ensure the mounting material provides sufficient thread engagement for the full 3-inch shank length and that the shoulder seats fully and squarely before applying any load. Fixed eye bolts are rated for axial in-line loads only — angular loading significantly reduces capacity and must be avoided or derated per applicable load charts. Inspect the eye bolt for deformation, cracks, or thread damage before each use and remove from service if any defects are found.