HARKEN BLOCK 57MM S/S ESP FOOT LOCKOFF

Cruising ESP blocks complement our existing blocks in looks and function, but are simpler in design and construction. Sheaves feature sleeve bearings to handle high static loads and are ideal for halyards or limited purchase systems on cruising boats.

Footnote
If double stacked, upper block/organizer is two-thirds of listed MWL and?breaking load.

Sheave Ø (mm)
57 mm

Sheave Ø (in)
2 1/4 in

Length (mm)
132 mm

Length (in)
3 3/4 in

Weight (g)
255 g

Weight (oz)
9 oz

Maximum line Ø (mm)
16 mm

Maximum line Ø (in)
5/8 in

Maximum working load (kg)
1000 kg

Maximum working load (lb)
2205 lb

Breaking load (kg)
2000 kg

Breaking load (lb)
4409 lb

Maximum lockoff load (kg)
295 kg

Maximum lockoff load (lb)
650 lb

Fasteners (mm)
10 RH mm

Fasteners (in)
3/8 RH in

A (mm)
50 mm

A (in)
1 31/32 in

B (mm)
55 mm

B (in)
2 5/32 in

C (mm)
57 mm

C (in)
2 1/4 in