Harken 100mm Aluminum Double Footblock

Description - The entire line of Black Magic® AirBlocks® has been redesigned with a sleek new look. Their unique, performance-packed engineering remains exactly the same.

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.

Sheave Ø (mm) - 100

Sheave Ø (in) - 3 15/16

Length (mm) - 143

Length (in) - 5 5/8

Height (mm) - 62

Height (in) - 2 7/16

Weight (g) - 967

Weight (oz) - 34.1

Maximum line Ø (mm) - 16

Maximum line Ø (in) - 5/8

Maximum working load (kg) - 2250

Maximum working load (lb) - 4950

Breaking load (kg) - 4500

Breaking load (lb) - 9900

Number of fasteners - 4

Fasteners (mm) - 10 FH

Fasteners (in) - 3/8 FH

A (mm) - 11

A (in) - 7/16

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