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Harken 125 mm Black MagicŪ Single footblock
Cat. No. HAR 3257
Weight 3 lbs

3017 125 mm Foot Block

Black Magic® footblocks carry some of the highest loads imposed by running rigging. The Torlon® rollers on these lightweight, free-running blocks are housed in a center cage, with no contact between bearings. UV-resistant, carbon-black Delrin® balls handle sideloads.

Either metric or imperial flathead fasteners may be used for mounting and are not exposed.

Use for:

Description Single
Sheave dia. (in) 5
Length (in) 6 15/16
Height (in) 1 11/16
Weight (oz) 35.7
Line dia. - optimal (in) 3/4
SWL (lb) 11000
Breaking strength (lb) 22000
Fasteners (FH) (in) 4 x 1/2
A (in) 11/16
B (in) 1 13/16
C (in) 4 7/16
D (in) 1 3/8
E (in) 5 1/8
F (in) 6 15/16
G (in) 15/16

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