Gibraltar SP20504 Fixed Shoulder Eye Bolt 4000 Lb 5/8-11

Product Description

The GIBRALTAR SP20504 is a fixed lifting eye bolt with shoulder, designed for vertical and angular load-lifting applications in industrial, construction, and mechanical service environments. It is manufactured from C-1035 grade steel with a hot dipped galvanized finish that provides corrosion resistance in demanding field conditions. The bolt carries a 4,000 lb lifting capacity and features a 5/8-11 thread with a fully threaded, 3-inch shank. Licensed riggers, millwrights, and maintenance professionals install this hardware when a positive shoulder stop and secure eye attachment point are required for overhead lifting or tensioning work.

This eye bolt is suited for use in rigging, material handling, machinery anchoring, and structural lifting setups where a shoulder-style eye bolt is specified. The shoulder design seats flush against the work surface to prevent the bolt from pulling through under load and to maintain load alignment. It is appropriate for use in both shop fabrication and field installation across construction, manufacturing, and heavy maintenance applications. Installers select this bolt when a fixed eye orientation and galvanized corrosion protection are required by job specifications.

Key Features

• 4,000 lb lifting capacity for overhead and tensioning applications
• Shoulder design seats against the work surface to resist pull-through under load
• Fully threaded 3-inch shank on 5/8-11 thread for positive engagement depth
• C-1035 grade steel construction for reliable mechanical strength
• Hot dipped galvanized finish for corrosion resistance in outdoor and wet environments
• 1-3/8 inch inside diameter eye accommodates hooks, shackles, and rigging hardware

Compatibility

Designed as an OEM-style fixed shoulder eye bolt for standard 5/8-11 threaded applications in rigging and material handling assemblies where a 4,000 lb rated galvanized eye bolt is specified.

Installation Notes

Installation should be performed by a qualified rigger or mechanical tradesperson familiar with applicable ASME B30 and OSHA rigging requirements. Before installing, confirm the receiving material thread depth and structural load rating meet or exceed the eye bolt capacity. The shoulder must be fully seated and in full contact with the work surface before any load is applied. Never side-load a fixed eye bolt beyond its rated angular capacity, and always inspect threads and the eye for deformation before each use.