Page 25 - Harken

16 mm

The 16 mm is Harken’s smallest block. It is perfect for small synthetic control
lines found on high-tech dinghies.
The bearing system uses stainless steel balls in a captive grooved race and has a
113 kg (250 lb) maximum working load—the highest on the market compared to
similarly sized blocks.
The 442 uses a spacer and the 404 uses an O-ring to keep the line in the sheave
during intermittent loading.
The 467 and 484 use a narrow sheave for extremely small control lines and have
a ferrule head for soft attachments. They use the same high load ball system.
The 484 features a bronze sheave for added durability.
Use for:
Dinghy control lines Spinnaker pole trip lines Hardened stainless steel inner race
Big Boat leech lines Outhauls for maximum strength-to-weight ratio.
Downhauls Cunninghams
Traveler controls Halyards on prams

Cutout
11 mm (7/16") x 41 mm (1 5/8") 391
60.3 mm 376 404
(2 3/8") 405

368
Actual size
409
408
406 407 36 mm
(1 7/16")
416
417

Cutout
11 mm (7/16") x 35 mm (1 3/8")
44.5 mm
(1 3/4")
442
437
467 484
421 432 12.7 mm
27 mm
(1/2") (1 1/16")
Sheave Max line Maximum Breaking
Part Ø Length Weight Ø working load load
No. Description in mm in mm oz g in mm lb kg lb kg
368 In-line exit* 5/8 16 3 76 .94 27 7/32 5 250 113 1200 544
376 Forkhead 5/8 16 1 1/8 29 .38 11 7/32 5 250 113 1200 544
391 Hook-in halyard 5/8 16 1 5/8 41 .5 13 7/32 5 250 113 400 181
404 Single** 5/8 16 1 1/8 29 .33 10 7/32 5 250 113 1200 544
405 Single/becket 5/8 16 1 1/2 38 .44 12 7/32 5 250 113 1200 544
406 Double 5/8 16 1 11/16 43 .94 27 7/32 5 450 204 1200 544
407 Double/becket 5/8 16 2 1/8 54 1 28 7/32 5 450 204 1200 544
408 Triple 5/8 16 1 13/16 46 1.44 41 7/32 5 700 318 1200 544
409 Triple/becket 5/8 16 2 1/4 57 1.5 43 7/32 5 700 318 1200 544
416 Cheek* 5/8 16 1 13/16 46 .44 12 7/32 5 250 113 1200 544
417 Single/swivel*** 5/8 16 1 13/16 46 .63 18 7/32 5 250 113 750 339
421 Through-deck* 5/8 16 2 3/8 60 .63 18 7/32 5 250 113 1200 544
432 Pivot cheek* 5/8 16 1 3/8 35 .38 11 7/32 5 250 113 750 339
437 Flip-fl op* 5/8 16 1 5/16 34 .75 21 7/32 5 250 113 1200 544
442 Block/eyestrap assembly* 5/8 16 1 3/8 35 .44 12 7/32 5 250 113 1200 544
467 Narrow ferrule head 5/8 16 1 15/32 37 .44 12 5/32 4 250 113 750 339
484 Narrow ferrule head, bronze sheave 5/8 16 1 15/32 37 .53 15 5/32 4 250 113 750 339
*4 mm (#8) RH fasteners. **Contact Harken for replacement O-rings HSB340. ***Shackle pin diameter 4 mm (5/32").
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