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Unit 4 MKIV Furling System

Part No. 7414.10

Wire Ø (1 x 19 SS) (mm) 16 mm

Wire Ø (1 x 19 SS) (in) 9/16 in

Rod Ø (mm) 14.3 mm

Rod Ø (dash) -48

Clevis pin Ø (mm) 28.57 mm

Clevis pin Ø (in) 7/8 in

MKIV furling systems are strong, lightweight and aerodynamic, with the performance and features Harken® is known for. Longevity, ease of use, and simplicity of installation are crucial components of the design.
Wire Ø (1 x 19 SS) (mm)16 mm
Wire Ø (1 x 19 SS) (in)9/16 in
Rod Ø (mm)14.3 mm
Rod Ø (dash)-48
Clevis pin Ø (mm)28.57 mm
Clevis pin Ø (in)7/8 in
Standard headstay length (m)22.88 m
Standard headstay length (ft in)75' 1" ft in
Maximum headstay length (m)27.15 m
Maximum headstay length (ft in)89' 1" ft in
A (mm)227 mm
A (in)8 15/16 in
B (in)** in
C (in)** in
D (mm)280 mm
D (in)11 1/16 in
E (mm)130 mm
E (in)5 1/8 in
F (mm)1405 mm
F (in)55 5/16 in
F maximum (mm)1405 mm
F maximum (in)55 5/16 in
G maximum (in)** in
G minimum (in)** in
H (mm)509 mm
H (in)20 in
H maximum (mm)509 mm
H maximum (in)20 in
I (mm)220 mm
I (in)8 5/8 in
I maximum (mm)220 mm
I maximum (in)8 5/8 in
J (mm)44 mm
J (in)1 3/4 in
K (mm)47 mm
K (in)1 27/32 in
Extrusion length (m)2.13 m
Extrusion length (ft in)7' ft in
Luff tape size (mm)5 mm
Luff tape size (in)#6 (6/32) in
ID BOM Qty Price
H-38212 - more info $243.95
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Line Guard - MKIV Unit 4

Fasteners not included.

H-38819 - more info $31.05
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(1/2) Cover with Insert - Furling MKIV Unit 4

Fasteners not included.

H-38820 - more info $31.05
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(1/2) Flange - MKIV Unit 4

Fasteners not included.

H-45482 - more info $224.70
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Feeder - Furling MKIV Unit 4

Stainless steel feeder allows fast singlehanded hoist and sail changes.

H-45788 - more info $2,461.00
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Halyard Swivel - Furling MKIV Unit 4

Lightweight aluminum halyard swivel saves weight aloft to reduce pitching and heeling.

HFG672 - more info $4.30
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Fastener Set - 2, 3, 4 MKIV Trim Cap

HFG946 - more info $92.00
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Connector Bushing Set - MKIV Unit 4

HFG947 - more info $25.70
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Wedge Set - MKIV Unit 4

HFG948 - more info $66.35
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Fastener Connector Set - MKIV Unit 4

HFG949 - more info

Trim Cap Set - MKIV Unit 4

H-45498B - more info

Torque Tube Clamp - MKIV Unit 4

Fasteners not included.

7414.10BASE - more info

Unit 4 MKIV Lower Unit

Aluminum line guard and torque tube are deep-saturation hardcoat-anodized, UV-stabilized for durability. Large inner spool diameter increases mechanical advantage for powerful reefing and furling.

7414.32 - more info

Unit 4 MKIV Bottom Connector with Bushings

Triple-interlock foil joints withstand years of torque loading: foil connectors geometric shape interlocks with foil; secures with syringe-injected adhesive; screws provide final lock.

7414.33 - more info

Unit 4 MKIV Foil - 0.61 m

Aerodynamic, clear-anodized aluminum Air foils handle extreme reefing loads.

Harken US Offices will be closed for Memorial Day. Any orders placed after 1pm on Friday May 27th will be processed Tuesday May 31st when offices reopen.

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