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Home: Marine Catalog: Deck Accessories: Blocks and Hardware:

Harken Stainless Steel Block
Cat. No. HAR 31SS
Weight 5 lbs

Stainless Steel Block

Hand-polished stainless steel sideplates are the trademark of these beautiful blocks. But itís the sheave design that gives them their strength and durability. Sheaves use a low-friction composite sleeve bearing for extreme radial loads. Ball bearings handle side loads. This proven sheave design is used on super-yachts where blocks must perform under very high, sustained loads without being excessive in size.

Block details include low-profile screw adapters and stainless-on-stainless construction for easy service. Sheaves on footblocks remove without unbolting the block. Headposts on swivel blocks lock or swivel freely.


Description Single
3131
Single
3132
Single
3181
Single
3135
Sheave dia. (in) 3 4 5 6
Length (in) 6 3/16 8 1/8 10 1/16 12 5/8
Weight (oz) 25.6 49.6 97.9 154.4
Max. line dia. (in) 9/16 3/4 7/8 7/8
SWL (lb) 5000 7500 11000 18000
Breaking strength (lb) 10000 15000 22000 36000


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