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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 sailing adventure.

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Hub Assembly

Note: Click on your preferred part no. or scroll down to purchase. If it's a Special Order item, click on the part number and request it through the Contact Us form. A customer care agent will follow up shortly.

Exploded View Image Ref. Part N° Description Quantity
Hub Assembly - HFG994 Hub Assembly
Special Order 		1
1 HFS1338 ↳ Clamp Screw (M8 x 20MM Custom dogpoint SS) 2
2 H-83557 ↳ Cover with threaded insert
Special Order 		2
3 H-35465C ↳ Flange half with threaded insert 2
4 HFS1060 ↳ Screws for flange and cover (M5 x 12mm FH SHCS) 4
5 H-33758E ↳ Guard half 2
6 HFS873 ↳ Guard Screw (M8 x 50 mm SHCS) 2
7 2117 ↳ Shackle 1
8 5357 ↳ Label for guard half
Special Order 		2
9 5361 ↳ Label for tack
Special Order 		1
10 7512.10BASE ↳ Hub
Special Order 		1
11 HCP1707 ↳ IGUS Crosspin Bushings for hub
Special Order 		1
12 MP-123 ↳ Delrin Ball Bearings for hub
Special Order 		78
13 H-33860A ↳ Ball Plugs for hub 3



Rod Adapter Stud Assembly

Note: Click on your preferred part no. or scroll down to purchase. If it's a Special Order item, click on the part number and request it through the Contact Us form. A customer care agent will follow up shortly.

Exploded View Image Ref. Part N° Description Quantity
Rod Adapter Stud Assembly - 7422-8 Rod Adapter Stud w/Nosepiece (-8) 1
1 H-41536 ↳ Stud (Main Body)
Special Order 		1
2 H-41534 ↳ Nosepiece (-8)
Special Order 		1
3 HFS1341 ↳ Cotter Pin (3/32" x 1" 18-8)
Special Order 		2
- 7423-10 Rod Adapter Stud w/Nosepiece (-10) 1
1 H-41536 ↳ Stud (Main Body)
Special Order 		1
2 H-41535 ↳ Nosepiece (-10)
Special Order 		1
3 HFS1341 ↳ Cotter Pin (3/32" x 1" 18-8)
Special Order 		2
- 7424-12 Rod Adapter Stud w/Nosepiece (-12) 1
1 H-41531 ↳ Stud (Main Body)
Special Order 		1
2 H-41527 ↳ Nosepiece (-12)
Special Order 		1
3 HFS1341 ↳ Cotter Pin (3/32" x 1" 18-8)
Special Order 		2



Eye/Jaw Toggle Reversible

Note: Click on your preferred part no. or scroll down to purchase. If it's a Special Order item, click on the part number and request it through the Contact Us form. A customer care agent will follow up shortly.

Exploded View Image Ref. Part N° Description Quantity
Eye/Jaw Toggle Reversible
- 7412.20 5/8 Eye/Jaw Toggle Reversible 1
1 H-37647C ↳ Toggle
Special Order 		1
2 H-42398 ↳ Crosspin (7/16" x 39/32" 18-8) 1
3 HFS1005 ↳ Nylon Washer 2
4 H-42045 ↳ Cross Hole Plug 2
5 H-42397 ↳ Clevis Pin (5/8" x 1 1/2" 18-8) 1
6 HFS203 ↳ Cotter Pin (5/32" x 1 1/4" 18-8) 1
7 HFS220 ↳ Cotter Pin (1/8" x 1" 18-8) 1
- 7312.20 5/8 Jaw/Jaw Toggle 1
1 H-42316 ↳ Toggle
Special Order 		1
2 H-42398 ↳ Crosspin (7/16" x 3 5/16" 18-8) 1
3 H-42397 ↳ Clevis Pin (5/8" x 1 1/2" 18-8) 2
4 HFS203 ↳ Cotter Pin (5/32" x 1 1/4" 18-8) 2
5 HFS220 ↳ Cotter Pin (1/8" x 1" 18-8) 1
6 HFS1005 ↳ Nylon Washer 2
- 7312.20 3/4 Stud/Jaw Toggle 1
1 H-41489 ↳ Toggle
Special Order 		1
2 H-42398 ↳ Crosspin (7/16" x 3 5/16" 18-8) 1
3 H-42403 ↳ Clevis Pin (3/4" x 1 13/16" 18-8)
Special Order 		2
4 H-43210 ↳ Stud
Special Order 		1
5 HFS203 ↳ Cotter Pin (5/32" x 1 1/4" 18-8) 3
6 HFS220 ↳ Cotter Pin (1/8" x 1" 18-8)
Special Order 		1
7 HFS1005 ↳ Nylon Washer 2



Long Link Plate w/Toggle

Note: Click on your preferred part no. or scroll down to purchase. If it's a Special Order item, click on the part number and request it through the Contact Us form. A customer care agent will follow up shortly.

Exploded View Image Ref. Part N° Part N° #2 Description Quantity
Long Link Plate w/Toggle - 7312.21 5/8 7312.21 3/4 Long Link Plate w/Toggle 1
1 H-41300 H-41489 ↳ Toggle
Special Order 		1
2 H-41304 H-41304 ↳ Strap
Special Order 		2
3 H-41302 H-41525 ↳ Upper Clevis Pin (Custom)
Special Order 		1
4 H-42397 H-42403 ↳ Lower Clevis Pin
Special Order (3/4” version) 		1
5 H-41497 H-41497 ↳ Isolator 2
6 HFS203 HFS203 ↳ Cotter Pin (5/32" x 1 1/4" 18-8) 2
7 HFS937 HFS937 ↳ Nylon Locking Nut (M12) 2
8 HFS336 HFS336 ↳ Allen Cap Screws (M8x1.25x16 A4 SHCS) 4
9 833 833 ↳ Loctite Blue
Special Order 		1



Trim Caps & Foils

Note: Click on your preferred part no. or scroll down to purchase. If it's a Special Order item, click on the part number and request it through the Contact Us form. A customer care agent will follow up shortly.

Exploded view Image Ref. Part N° Description Quantity
Trim Caps & Foils 1 HFS1127 Trim Cap Screw 6x3/8" Tap (Qty includes 1 extra) 3
2 H-83704 Trim Cap (bottom half)
Special Order 		1
3 H-83703 Trim Cap (top half)
Special Order 		1
4 7512.31F Connector (Quantity is for standard pkg.)
Special Order 		8
5 H-83693 Connector Bushing (bottom, longer with hook)
Special Order 		8
6 H-83692 Connector Bushing (top half, shorter)
Special Order 		8
7 HFS1060 Foil Screw M5x12mm FH SHCS (Qty includes extra) 36
8 7512.30 Foil 7' (2.13 m) (Quantity is for standard pkg.)
Special Order 		8
9 HFS1119 Feeder Screw M3x8mm SHCS (Qty includes 1 extra)
Special Order 		5
10 H-83721 Feeder Half
Special Order 		2
11 75112.33F Bottom Foil 2' (610 mm)
Special Order 		1
12 7512.FOILSET Foil set includes (8) 7511.30 and (1)7512.33F
Special Order 		1



Connector w/Bushings and Foil Screws

Note: Click on your preferred part no. or scroll down to purchase. If it's a Special Order item, click on the part number and request it through the Contact Us form. A customer care agent will follow up shortly.

Exploded View Image Ref. Part N° Description Quantity
Connector w/Bushings and Foil Screws - 7512.31 Connector w/Bushings and Foil Screws 1
4 7512.31F ↳ Connector
Special Order 		1
5 H-83692 ↳ Connector Bushing (top half, shorter)
Special Order 		1
6 H-83693 ↳ Connector Bushing (bottom, longer w/ hook)
Special Order 		1
7 HFS1060 ↳ Foil Screw 4



Halyard Swivel

Note: Click on your preferred part no. or scroll down to purchase. If it's a Special Order item, click on the part number and request it through the Contact Us form. A customer care agent will follow up shortly.

Exploded view Image Ref. Part N° Description Quantity
Halyard Swivel - HFG995 Halyard Swivel
Special Order 		1
1 H-83590 ↳ Clip/Smalley Ring
Special Order 		1
2 2117 ↳ Shackle 8 mm 2
3 MP-127 ↳ Torlon Ball Bearings 3/8"
Special Order 		44



Instruction Manual & Accessories

Note: Click on your preferred part no. or scroll down to purchase. If it's a Special Order item, click on the part number and request it through the Contact Us form. A customer care agent will follow up shortly.

Exploded View Part N° Description Quantity
Instruction Manual & Accessories
5390 Instruction Manual
Special Order 		1
HFG739 Loctite Red
Special Order 		1
833 Loctite Blue
Special Order 		1
HFG233 7 mm Double Braid Polyester (70' / 21.3 m) 1


Extra Tools

Note: Click on your preferred part no. or scroll down to purchase. If it's a Special Order item, click on the part number and request it through the Contact Us form. A customer care agent will follow up shortly.

Exploded View Part N° Description Quantity
Extra Tools
7404 Lead Block Kit (sold separately) 1
7403 29 mm Outboard Lead Assembly 3
7402 57 mm Carbo Ratchet Assembly 1
7401 40 mm Carbo Assembly 1
HCP168 Horn Cleat
Special Order 		1
945 Halyard Restrainer (sold separately) 1
945ASSY Sheave/SS Inner Race Only
Special Order 		1
SP-038 Clevis Pin (5/16" x 1 1/4" 18-8)
Special Order 		1
HCP394 Bracket-Large
Special Order 		-
HFS181 Cotter Pin (3/32" x 3/4" 18-8) 1
7303 Halyard Deflector (sold separately) 1
Hex Keys
HCP1089 ↳ 3 mm
Special Order 		1
HFG640 ↳ 4 mm 1
HFG643 ↳ 5 mm Long
Special Order 		1
HFG644 ↳ 6 mm
Special Order 		1


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