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

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

3131 75 mm SS Footblock

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 Footblock
3131
Footblock
3134
Footblock
3183
Footblock
3137
Sheave dia. (in) 3 4
5
6
Length (in) 4 5/16 5 3/4 7 1/8 8 5/8
Weight (oz) 24.8 53.4 100.3 157.6
Max. line dia. (in) 9/16 3/4 7/8 7/8
SWL (lb) 5250 7750 11250 18250
Breaking strength (lb) 10500 15500 22500 36500
A (in) 7/16 5/8 11/16 7/8
B (in) 1 1/4 1 1/2 1 3/4 2 5/16
C (in) 4 5 3/16 6 9/16 7 13/16
D (in) 13/16 1 1/8 1 3/8 1 3/4
E (in) 3 1/8 4 1/8 5 3/16 6 3/16
F (in) 4 7/16 146 7 1/8 8 5/8


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