Crosby® McKissick® 419 Sheave Blocks w/ Shackle & Roller Bearings
The 419 line is the shackle-end counterpart to the 418 hook series: the same roller-bearing sheave built for frequent, high-cycle lifting, but terminating in a forged steel swivel shackle instead of a rigid hook. The swivel shackle lets the block rotate to follow the load path, and on sizes 6" through 14" the shackle assembly interchanges across that size range, so crews and dealers running mixed rigging inventory can standardize hardware instead of stocking a different shackle per block. Every size is made in the USA and meets or exceeds ASME B30.26 requirements.
Common Uses
- Crane operations and heavy load positioning where load rotation matters
- High-cycle lifting where roller bearings outlast a bushing under repeated use
- Rigging setups standardizing on interchangeable shackle hardware across block sizes
- Contractors and dealers needing documented, made-in-USA rigging hardware
How to Choose the Right Sheave Block
Match wire rope diameter first, then confirm the working load limit covers your actual working load with margin to spare. Working load limit steps up from 16,000 lbs to 30,000 lbs at the larger sheave sizes, so don't assume capacity scales evenly with sheave diameter, check the rating for your specific size.
Meeting ASME B30.26 covers the hardware's design and construction standard, not your specific lift or rigging setup. Confirm your wire rope, shackle, and full rigging chain are matched to your lowest-rated component, and follow applicable OSHA rigging and crane standards along with your equipment documentation for setup and inspection requirements.
Complete the Job
Need a rigid hook instead of a swivel shackle? See the Crosby® McKissick® 418 Sheave Blocks w/ Hook & Roller Bearings. Need a fixed-mount block instead of one that hangs from a shackle? Check the 404 Tailboard Blocks w/ Roller Bearings. For lighter-duty configurations, browse the Snatch Block w/ Hook SS 304 and 4190 Snatch Block w/ Shackle collections, or see the full Crosby® McKissick® Snatch Blocks line for other bearing and connection options.
Frequently Asked Questions
Why a swivel shackle instead of a rigid hook?
A swivel shackle lets the block rotate to follow the load as it's positioned, which helps in crane and rigging operations where the load path shifts. A rigid hook holds a fixed orientation. Choose based on whether your rigging setup benefits from that rotation.
What does the interchangeable shackle assembly mean for me?
On the 6" through 14" sizes, the shackle assembly is compatible across that size range. If you're running several block sizes in mixed rigging inventory, you can standardize on one shackle style rather than stocking a different one per block.
Why does the working load limit jump between sizes?
The 6" through 14" sheave sizes are rated to 16,000 lbs, then step up to 30,000 lbs at 16" and 18" along with a corresponding increase in wire rope diameter. Choose based on the WLL your application actually needs, not just sheave size.
Why roller bearings instead of a bronze bushing?
Roller bearings are built to hold up under frequent, high-cycle lifting where a bronze bushing would wear faster. This line is built for that duty level rather than occasional use.
What does ASME B30.26 compliance mean?
ASME B30.26 sets design, construction, and marking requirements for rigging hardware like blocks and shackles. It confirms the hardware is built to that standard; it doesn't certify your specific lift or substitute for your own inspection and load calculations.
