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100 mm Aluminum Double Footblock 100 mm Aluminum Double Footblock 100 mm Aluminum Double Footblock
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100 mm Black Magic®

100 mm Aluminum Double Footblock

Part No. 3250
$930.70  Not available on-line. Please contact your Harken dealer.
Sheave Ø (mm)100 mm
Sheave Ø (in)3 15/16 in
Maximum line Ø (mm)16 mm
Maximum line Ø (in)5/8 in
Maximum working load (kg)2250 kg
Maximum working load (lb)4950 lb

Carrying some of the highest loads imposed by running rigging, these strong, lightweight blocks feature Torlon® roller bearings housed in a center cage. Rollers stay parallel for low-friction efficiency. Sculpted hardcoat-anodized aluminum sideplates protect sideload ball bearings. Dissimilar metals are isolated to minimize corrosion. Blocks are easily disassembled with a single hex wrench.

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

Torlon is a registered trademark of Solvay Advanced Polymers.

Sheave Ø (mm)100 mm
Sheave Ø (in)3 15/16 in
Length (mm)143 mm
Length (in)5 5/8 in
Height (mm)62 mm
Height (in)2 7/16 in
Weight (g)967 g
Weight (oz)34.1 oz
Maximum line Ø (mm)16 mm
Maximum line Ø (in)5/8 in
Maximum working load (kg)2250 kg
Maximum working load (lb)4950 lb
Breaking load (kg)4500 kg
Breaking load (lb)9900 lb
Number of fasteners
Fasteners (mm)10 FH mm
Fasteners (in)3/8 FH in
A (mm)11 mm
A (in)7/16 in
B (mm)38 mm
B (in)1 1/2 in
C (mm)93 mm
C (in)3 5/8 in
D (mm)28 mm
D (in)1 1/8 in
E (mm)100 mm
E (in)3 15/16 in
F (mm)143 mm
F (in)5 5/8 in
G (mm)21 mm
G (in)13/16 in
DWG: 3250.DWG (open/save)
DXF: 3250.DXF (open/save)
IGS: 3250.IGS (open/save)
EPS: 3250.eps (open/save)
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