Product Description

Harken Stand-up bases allow a wide variety of blocks to be held upright, swivel freely, or pivot so lines have a fair lead under load.

Use the1634 stand-up base with Midrange blocks and 57 mm or 75 mm Cruising ESP blocks. Block headpost fits into socket without shackle. The low-profile design is ideal for mastbase and halyard lead blocks.

Part Number: 1634

Imperial Metric
Height 1 15/16" 49 mm
Weight 9 oz 255 gr
Base Dia. 2 7/8" 73 mm
Inside Socket Dia. 9/16" 15 mm
Pin Dia. 5/16" 8 mm
Maximum Working Load 3500 lbs 1588 kg
Breaking Load 7000 lbs 3175 kg
Use with Midrange/Cruising ESP
RH Fasteners # 1/4 6 mm

Harken Blocks

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Harken Midrange Cruising ESP Stand-up Base
Original Price: $ 111.30
Price: $ 97.94

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