Harken 40 mm Triple Carbo Block, Swivel with Becket
- Brand:
- Harken
- Part no:
- 2641
Image: Fisheries Supply
Where to buy
View on Amazonpaid link
Specifications
- Sheave diameter
- 40 mm
- Sheaves
- 3
- Becket
- Yes
Manuals
- Block instructions (PDF)180sails.com
This is a Harken 40 mm triple Carbo block with a swivel head and a becket. It is long glass fiber injection molded, weighs 4.7 oz, and takes line up to 3/8 inch. Its safe working load is 1,455 lb. The swivel head can be locked in either of two directions or left free. Harken points it at jib and main sheet systems on fast dinghies.
Our take
A 1,455 lb safe working load in a block of only 4.7 oz is the headline here. The swivel head can be locked in two directions or left free, and the becket gives a spot to attach a line end, all for line up to 3/8 inch.
From our buying guide
Ball-bearing blocks give the lowest friction on lines running under moderate loads. Plain bearings have more friction, but handle very high and static loads.
Check before you buy:
- A ratchet block is rated for the full sheet load.
- Any becket's load limit suits the job, since a becket can be rated below the block itself.
- A soft-attach block will be looked after, since Harken warns soft attachments are prone to wear and recommends them only for regularly maintained race boats.






