Page 34 - Harken

Line/Wire High 300
304
Strength Blocks 308

Lightweight, low-friction wire blocks carry wire halyards
and high-strength control lines on boats of all sizes.
High-load composite bearings carry axial loads.
Hard Lube-anodized sheave for strength and
corrosion resistance. High-load composite bearings handle
wire and high-strength line.
25 mm (1") wire blocks use low-friction thrust washers.
38 mm (1.5") and 51 mm (2") wire blocks feature 466
sideload balls between the sheave and the sideplate
to minimize friction from unfair leads.
466 features a forkhead and becket making it useful
for vangs, halyards and control lines.
Use for:
Wire halyards
Vangs Sideplates rotate to insert preswaged/
Control lines Nico-pressed wire fittings.

302 – 54 mm (2 1/8")
306 – 75 mm (2 15/16")
310 – 94 mm (3 11/16") 320

302
306
310
Cutout
302 11 mm (13/32") x 39 mm (1 17/32")
306 13 mm (17/32") x 59 mm (2 5/16")
310 14 mm (9/16") x 73 mm (2 23/32")
301 – 22 mm (7/8")
305 – 32 mm (1 1/4")
309 – 41 mm (1 5/8")

301 312
305 313
309 314
Lightning © Phil Page Photography

Sheave Shackle pin Max wire Max line Maximum Breaking
Part Ø Weight Ø Ø Ø working load load
No. Description in mm oz g in mm in mm in mm lb kg lb kg
300 Single 1 25 1 28 3/16 5 3/32 2 5/32 4 1000 454 2000 907
301 Cheek‡* 1 25 1.25 35 3/32 2 5/32 4 1000 454 2000 907
302 Through-deck* 1 25 1 28 3/32 2 5/32 4 1000 454 2000 907
304 Single 1 1/2 38 2.75 78 1/4 6 1/8 3 3/16 5 1500 680 3000 1361
305 Cheek‡** 1 1/2 38 3.25 92 1/8 3 3/16 5 1500 680 3000 1361
306 Through-deck* 1 1/2 38 3.25 92 1/8 3 3/16 5 1500 680 3000 1361
308 Single 2 51 5.25 149 5/16 8 3/16 5 1/4 6 2000 907 4000 1814
309 Cheek‡*** 2 51 6 170 3/16 5 1/4 6 2000 907 4000 1814
310 Through-deck** 2 51 5.75 163 3/16 5 1/4 6 2000 907 4000 1814
312 Single/becket 1 25 1.25 35 3/16 5 3/32 2 5/32 4 1000 454 2000 907
313 Single/becket 1 1/2 38 3 85 1/4 6 1/8 3 3/16 5 1500 680 3000 1361
314 Single/becket 2 51 5.75 163 5/16 8 3/16 5 1/4 6 2000 907 4000 1814
320 Ferrule head 1 1/2 38 3 85 1/8 3 3/16 5 1500 680 3000 1361
321 Small split backstay plate for 304 1 28
466 Single forkhead/becket 1 25 1.02 29 3/16 5 3/32 2 5/32 4 1000 454 2000 907
‡Fasteners included. *#10 (5 mm) RH fasteners. ** 6 mm (1/4") RH fasteners. *** 8 mm (5/16") RH fasteners.
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