Answer
Feb 11, 2026 - 01:58 PM
When properly installed on steel core wire rope, the 3/8" Crosby S-505 Flemish Eye Sling Sleeve provides approximately 96% efficiency of the wire rope’s published minimum breaking strength.
For 3/8" 7x19 galvanized aircraft cable (GAC), the typical published breaking strength is 14,400 lbs.
To calculate the approximate breaking strength of the completed sling: 14,400 lbs × 0.96 = 13,824 lbs (approximate breaking strength of the assembly)
Most wire rope slings are rated using a 5:1 design factor. The Working Load Limit (WLL) is derived from the adjusted breaking strength and accounts for the efficiency of the mechanical swage sleeve.
Always observe the rated Working Load Limit and never exceed the WLL of the sling in use.
