Discount Marine Source - Micro Blocks

Low-friction Micro blocks are compact and lightweight, with fast trim and release under high or low loads. Ideal for sailboards, smaller dinghies, and for lightly loaded control lines on boats of all sizes. Free-rolling Delrin® ball bearings, sheave and sideplates UV-stabilized, with carbon-black additive for maximum protection. Stainless steel sideplates for strength. Used for Cunninghams/Outhauls, Vangs, Traveler controls, Barberhaulers, Flag halyards, Leech cords, & Lead car return tackles.

Micro Blocks

Micro Blocks

Harken, Double Micro Block w/Becket, 227

Regular Price: $29.20
On Sale For: $24.82

Part # HAR-227

Manufacturer Part # 227

Description: Double/becket

Sheave dia. (in): 7/8

Sheave dia. (mm): 22

Length (in): 2 1/2

Length (mm): 64

Weight (oz): 1.5

Weight (g): 43

Max. line dia. (in): 1/4

Max. line dia. (mm): 6

Shackle pin dia. (in): -

Shackle pin dia. (mm): -

Max. working load (lb): 350

Max. working load (kg): 159

Breaking load (lb): 1200

Breaking load (kg): 544

Quantity:

Harken, Double Micro Block, 226

Regular Price: $27.05
On Sale For: $22.99

Part # HAR-226

Manufacturer Part # 226

Weight (oz): 1.5

Weight (g): 43

Max. line dia. (in): 1/4

Max. line dia. (mm): 6

Shackle pin dia. (in): -

Shackle pin dia. (mm): -

Max. working load (lb): 350

Max. working load (kg): 159

Breaking load (lb): 1200

Breaking load (kg): 544

Description: Double

Sheave dia. (in): 7/8

Sheave dia. (mm): 22

Length (in): 2

Length (mm): 51

Quantity:

Harken, Micro Anti-Capsize Block, 443

Regular Price: $17.80
On Sale For: $15.13

Part # HAR-443

Manufacturer Part # 443

Description: Block/eyestrap assembly

Sheave dia. (in): 7/8

Sheave dia. (mm): 22

Length (in): 1 3/4

Length (mm): 45

Weight (oz): .56

Weight (g): 16

Max. line dia. (in): 1/4

Max. line dia. (mm): 6

Shackle pin dia. (in): -

Shackle pin dia. (mm): -

Max. working load (lb): 200

Max. working load (kg): 91

Breaking load (lb): 1000

Breaking load (kg): 454

Quantity:

Harken, Micro Cheek Block, 233

Regular Price: $14.60
On Sale For: $12.41

Part # HAR-233

Manufacturer Part # 233

Description: Cheek

Sheave dia. (in): 7/8

Sheave dia. (mm): 22

Length (in): 2 1/2

Length (mm): 64

Weight (oz): .75

Weight (g): 21

Max. line dia. (in): 1/4

Max. line dia. (mm): 6

Shackle pin dia. (in): -

Shackle pin dia. (mm): -

Max. working load (lb): 200

Max. working load (kg): 91

Breaking load (lb): 1200

Breaking load (kg): 544

Hole spacing (in): 2 1/16

Hole spacing (mm): 52

Quantity:

Harken, Micro Fiddle with V Jam , 244

Regular Price: $31.60
On Sale For: $26.86

Part # HAR-244

Manufacturer Part # 244

Description: Fiddle/V-jam*

Sheave dia. (in): 7/8

Sheave dia. (mm): 22

Length (in): 3 1/2

Length (mm): 89

Weight (oz): 2

Weight (g): 57

Max. line dia. (in): 1/4

Max. line dia. (mm): 6

Shackle pin dia. (in): 3/16

Shackle pin dia. (mm): 5

Max. working load (lb): 350

Max. working load (kg): 159

Breaking load (lb): 1200

Breaking load (kg): 544

Quantity:

Harken, Micro Fiddle with V Jam and Becket, 245

Regular Price: $34.45
On Sale For: $29.28

Part # HAR-245

Manufacturer Part # 245

Description: Fiddle/V-jam/becket**

Sheave dia. (in): 7/8

Sheave dia. (mm): 22

Length (in): 4

Length (mm): 102

Weight (oz): 2

Weight (g): 57

Max. line dia. (in): 1/4

Max. line dia. (mm): 6

Shackle pin dia. (in): 3/16

Shackle pin dia. (mm): 5

Max. working load (lb): 350

Max. working load (kg): 159

Breaking load (lb): 1200

Breaking load (kg): 544

Quantity:

Harken, Micro Stand Up Block, 243

Regular Price: $15.00
On Sale For: $12.75

Part # HAR-243

Manufacturer Part # 243

Description: Upright

Sheave dia. (in): 7/8

Sheave dia. (mm): 22

Length (in): 1 1/2

Length (mm): 38

Weight (oz): 1

Weight (g): 28

Max. line dia. (in): 1/4

Max. line dia. (mm): 6

Shackle pin dia. (in): -

Shackle pin dia. (mm): -

Max. working load (lb): 200

Max. working load (kg): 91

Breaking load (lb): 1200

Breaking load (kg): 544

Hole spacing (mm): 22 and 25

Hole spacing (in): 7/8 and 1

Quantity:

Harken, Micro Swivel Block, 292

Regular Price: $21.50
On Sale For: $18.28

Part # HAR-292

Manufacturer Part # 292

Description: Single/swivel

Sheave dia. (in): 7/8

Sheave dia. (mm): 22

Length (in): 2 3/8

Length (mm): 60

Weight (oz): 1

Weight (g): 28

Max. line dia. (in): 1/4

Max. line dia. (mm): 6

Shackle pin dia. (in): 5/32

Shackle pin dia. (mm): 4

Max. working load (lb): 200

Max. working load (kg): 91

Breaking load (lb): 1200

Breaking load (kg): 544

Quantity:

Harken, Micro Thru Deck Block w/Coverplate, 242

Regular Price: $25.85
On Sale For: $21.97

Part # HAR-242

Manufacturer Part # 242

Cutout (in): 5/8 x 1 9/16

Cutout (mm): 16 x 40

Hole spacing (in): 2 1/8

Hole spacing (mm): 54

Description: Thru-deck

Sheave dia. (in): 7/8

Sheave dia. (mm): 22

Length (in): 2 5/8

Length (mm): 67

Weight (oz): 1

Weight (g): 28

Max. line dia. (in): 1/4

Max. line dia. (mm): 6

Shackle pin dia. (in): -

Shackle pin dia. (mm): -

Max. working load (lb): 200

Max. working load (kg): 91

Breaking load (lb): 1200

Breaking load (kg): 544

Quantity:

Harken, Micro Traveler Block, 232

Regular Price: $24.10
On Sale For: $20.49

Part # HAR-232

Manufacturer Part # 232

Description: Traveler

Sheave dia. (in): 7/8

Sheave dia. (mm): 22

Length (in): 2 3/4

Length (mm): 71

Weight (oz): 1.25

Weight (g): 35

Max. line dia. (in): 1/4

Max. line dia. (mm): 6

Shackle pin dia. (in): -

Shackle pin dia. (mm): -

Max. working load (lb): 200

Max. working load (kg): 91

Breaking load (lb): 1200

Breaking load (kg): 544

Quantity:

Harken, Single Micro Block w/Becket, 225

Regular Price: $12.40
On Sale For: $10.54

Part # HAR-225

Manufacturer Part # 225

Breaking load (lb): 1200

Breaking load (kg): 544

Description: Single/becket

Sheave dia. (in): 7/8

Sheave dia. (mm): 22

Length (in): 2

Length (mm): 51

Weight (oz): .75

Weight (g): 21

Max. line dia. (in): 1/4

Max. line dia. (mm): 6

Shackle pin dia. (in): -

Shackle pin dia. (mm): -

Max. working load (lb): 200

Max. working load (kg): 91

Quantity:

Harken, Single Micro Block w/Shackle & Becket, 235

Regular Price: $17.25
On Sale For: $14.66

Part # HAR-235

Manufacturer Part # 235

Description: Single/shackle/becket

Sheave dia. (in): 7/8

Sheave dia. (mm): 22

Length (in): 2 3/4

Length (mm): 71

Weight (oz): 1

Weight (g): 28

Max. line dia. (in): 1/4

Max. line dia. (mm): 6

Shackle pin dia. (in): 3/16

Shackle pin dia. (mm): 5

Max. working load (lb): 200

Max. working load (kg): 91

Breaking load (lb): 1200

Breaking load (kg): 544

Quantity:

Harken, Single Micro Block w/Shackle, 234

Regular Price: $15.50
On Sale For: $13.18

Part # HAR-234

Manufacturer Part # 234

Sheave dia. (mm): 22

Length (in): 2 3/4

Length (mm): 71

Weight (oz): 1

Weight (g): 28

Max. line dia. (in): 1/4

Max. line dia. (mm): 6

Description: Single/shackle

Sheave dia. (in): 7/8

Shackle pin dia. (in): 3/16

Shackle pin dia. (mm): 5

Max. working load (lb): 200

Max. working load (kg): 91

Breaking load (lb): 1200

Breaking load (kg): 544

Quantity:

Harken, Single Micro Block, 224

Regular Price: $10.75
On Sale For: $9.14

Part # HAR-224

Manufacturer Part # 224

Description: Single

Sheave dia. (in): 7/8

Sheave dia. (mm): 22

Length (in): 1 1/2

Length (mm): 38

Weight (oz): .5

Weight (g): 14

Max. line dia. (in): 1/4

Max. line dia. (mm): 6

Shackle pin dia. (in): -

Shackle pin dia. (mm): -

Max. working load (lb): 200

Max. working load (kg): 91

Breaking load (lb): 1200

Breaking load (kg): 544

Quantity:

Harken, Triple Micro Block w/Cam Cleat & Becket, 231

Regular Price: $86.35
On Sale For: $73.40

Part # HAR-231

Manufacturer Part # 231

Length (mm): 64

Weight (oz): 3.5

Weight (g): 99

Max. line dia. (in): 1/4

Max. line dia. (mm): 6

Shackle pin dia. (in): -

Shackle pin dia. (mm): -

Max. working load (lb): 500

Max. working load (kg): 227

Breaking load (lb): 1200

Breaking load (kg): 544

Description: Triple/423 Carbo-Cam/becket

Sheave dia. (in): 7/8

Sheave dia. (mm): 22

Length (in): 2 1/2

Quantity:

Harken, Triple Micro Block w/Cam Cleat, 230

Regular Price: $84.70
On Sale For: $72.00

Part # HAR-230

Manufacturer Part # 230

Description: Triple/423 Carbo-Cam

Sheave dia. (in): 7/8

Sheave dia. (mm): 22

Length (in): 2

Length (mm): 51

Weight (oz): 3.5

Weight (g): 99

Max. line dia. (in): 1/4

Max. line dia. (mm): 6

Shackle pin dia. (in): -

Shackle pin dia. (mm): -

Max. working load (lb): 500

Max. working load (kg): 227

Breaking load (lb): 1200

Breaking load (kg): 544

Quantity: