Product Description

75 mm Black Magic® AirBlocks® feature Torlon® roller bearings for strength and reduced wear. The unique center cage separates rollers for less friction. Sideload ball bearings are protected by sculpted aluminum sideplates. Dissimilar metals are isolated to minimize corrosion. Low-load blocks use Delrin® rollers and type 316 stainless steel shackles.

Like all AirBlocks®, the three-way head swivels/locks in front/side positions. Blocks are easily disassembled with a single Allen wrench.

Use straphead blocks with LOUPS or straps aligned fore/aft or side to side.

Use for:
Sheets, Halyards, Running backstays and Control lines.

Part Number: 3244
**Replaces 1974

Imperial Metric
Sheave Dia. - 75 mm
Length 5 15/16" 151 mm
Weight w/Shackle 15.6 oz 442 gr
Max Line Dia. 9/16" 14 mm
Maximum Working Load 5000 lbs 2268 kg
Breaking Load 10000 lbs 4536 kg


A 3 " 57 mm
B 2 3/16" 56 mm
C 1 1/4" 32 mm

Includes padeye. Uses holespacing and base dimensions of 627 padeye.
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Harken 75mm Standup Block
Original Price: $ 609.60
Price: $ 536.45

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