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Spars, Rigging, and Hardware for Sailboats

Rig-Rite, Inc.


Phone: (001) 401-739-1140 -- FAX: (001) 401-739-1149
www.RigRite.com    Ordering/Questions

Headboard Shackles


Headboard Shackles

A Headboard Shackle is a specific type of Halyard Shackle normally used on a Mainsail Halyard to attach the mainsail Headboard. They do not incorporate a swivel given the minimal twisting forces on the Main Halyard. On smaller boats they can be used on other Sails, but in general, Swivel Snap Shackles are preferred in Jib and Spinnaker applications.

Headboard Shackles generally have a deep throat, and are commonly equipped with a Retaining Bar to prevent removal from the Halyard. In some cases the Retaining Bar is removable, allowing for attachment to pre-spliced Halyards.


Merriman Key Pin Headboard Shackles

Available with an Eye for Line or a Clevis Pin for Wire attachment, these SS Headboard Shackles feature a fully recessed Captive SS Key Pin for ultimate simplicity. These High-strength investment cast SS Shackles are commonly used on boats up to 34' (10M).
For Traditional applications, See also, Merriman Bronze Headboard Shackles.

Merriman Key Pin Headboard Shackle w/ Eye: Mer 5802-200:
Heavy-duty Headboard Shackle with 5/16" Key Pin is suitable for up to 7/16" (11mm) line. High-strength investment cast SS Shackle has 1/2" ID Eye for line attachment and 1 1/8" x 3/4" clearance for Headboard attachment. Key Pin is unlocked with a half turn and retracts fully while remaining Captive. Unit is (max) 2 1/2" long x 1 1/8" wide (excluding Pin). Commonly used on boats up to 34' (10M), Tensile strength is 4100 lbs. (1860 kg), Safe Working Load should not exceed 2000 lbs. (900 kg).
Mer 5802-200
Merriman Key Pin Headboard Shackle w/ 1/4" Clevis Pin: Mer 5805-200:
Heavy-duty Headboard Shackle with 5/16" Key Pin and 1/4" Clevis Pin is suitable for attachment to up to 5/32" wire Halyard. High-strength investment cast SS Shackle 1 1/8" x 3/4" clearance for Headboard attachment. Key Pin is unlocked with a half turn and retracts fully while remaining Captive. Unit is (max) 2 1/2" long x 1 1/8" wide (excluding Pin). Commonly used on boats up to 34' (10M), Tensile strength is 4100 lbs. (1860 kg), Safe Working Load should not exceed 2000 lbs. (900 kg).
Mer 5805-200

Schaefer Headboard Shackles

For over 50 years Schaefer has produced a wide range of stainless steel Headboard Shackles for both line and wire halyards.
Key Pin Shackle, 1/4" Pin for 3/32" Ball Swage, 3/8" line: Sch 93-41:
Headboard Shackle with 1/4" Key Pin is designed for use with a 3/32" swage ball (MS20664-3), or up to 3/8" (10mm) line. Unit is (max) 2 1/8" long with a 3/8" (5/8" max) wide strap and clearance for up to 1/2" wide Headboard. Safe Working Load is 1000 lbs. (450 kg), unit weighs 1.5 oz. (43 g).

Sch 93-41
Short 1/4" Key Pin Shackle w/ Retainer for up to 5/16" line: Sch 93-43:
Headboard Shackle with 1/4" Key Pin is suitable for up to 5/16" (8mm) line. Unit features an integral retaining Pin to prevent loss when spliced or tied to halyard. Short shackle is (max) 1 1/2" long with a 3/8" (5/8" max) wide strap and 1/2" x 1/2" clearance for Headboard attachment. Safe Working Load is 1550 lbs. (705 kg), unit weighs 1.5 oz. (43 g).

Sch 93-43
Key Pin Shackle, 1/4" Pin w/ Retainer for up to 5/16" line: Sch 93-42:
Headboard Shackle with 1/4" Key Pin is suitable for up to 5/16" (8mm) line. Unit features an integral retaining Pin to prevent loss when spliced or tied to halyard. Shackle is (max) 2 1/8" long with a 3/8" (5/8" max) wide strap and 1 3/16" x 1/2" clearance for Headboard attachment. Safe Working Load is 1550 lbs. (705 kg), unit weighs 1.5 oz. (43 g).

Sch 93-42
Key Pin Shackle, 5/16" Pin w/ Retainer for up to 1/2" line: Sch 93-45:
Heavy-duty Headboard Shackle with 5/16" Key Pin is suitable for up to 1/2" (12mm) line. Unit features a welded integral retaining Pin to prevent loss when spliced or tied to halyard. Shackle is (max) 2 5/8" long with a 1/2" (3/4" max) wide strap and 1 1/8" x 3/4" clearance for Headboard attachment. Safe Working Load is 2500 lbs. (1135 kg).

Sch 93-45
Deluxe Cast Screw Pin Shackle for up to 1/2" Line: Sch 93-75X:
Cast SS Heavy-duty Headboard Shackle with 3/8" Screw Pin is suitable for line up to 1/2" (12mm). Double-threaded Screw Pin design allows for complete attachment to Headboard without Pin removal. Investment Cast Shackle is (max) 2 13/16" long with 1" x 3/4" clearance for Headboard attachment and 1/2" ID Eye. Safe Working Load is 4500 lbs. (2045 kg), unit weighs 5.75 oz. (163 g).

Deluxe Cast Screw Pin Shackle for up to 3/4" Line: Sch 93-76X:
Cast SS Heavy-duty Headboard Shackle with 1/2" Screw Pin is suitable for up line up to 3/4" (19mm). Double-threaded Screw Pin design allows for complete attachment to Headboard without Pin removal. Investment Cast Shackle is (max) 4" long with 1 1/2" x 1" clearance for Headboard attachment and 3/4" ID Eye. Safe Working Load is 7500 lbs. (3400 kg), unit weighs 11 oz. (312 g).

Deluxe Cast Screw Pin Shackle w/ 3/8" Clevis Pin: Sch 93-80:
Cast SS Heavy-duty Headboard Shackle with 3/8" Screw Pin is suitable for up wire up to 3/16". With a 3/8" Clevis Pin it fits a standard 3/16" Marine Eye. Double-threaded Screw Pin design allows for complete attachment to Headboard without Pin removal. Investment Cast Shackle is (max) 2 13/16" long with 1" x 3/4" clearance for Headboard attachment. Safe Working Load is 4500 lbs. (2045 kg), unit weighs 6 oz. (170 g).

Deluxe Cast Screw Pin Shackle w/ 1/2" Clevis Pin: Sch 93-81X:
Cast SS Heavy-duty Headboard Shackle with 1/2" Screw Pin is suitable for up wire up to 5/16". With a 1/2" Clevis Pin it fits a standard 1/4" Marine Eye. Double-threaded Screw Pin design allows for complete attachment to Headboard without Pin removal. Investment Cast Shackle is (max) 4" long with 1 1/2" x 1" clearance for Headboard attachment. Safe Working Load is 7500 lbs. (3400 kg), unit weighs 11 oz. (312 g).


Tylaska Headboard Shackles

For over a quarter-century, Tylaska Marine & Aerospace has stood at the forefront of crafting top-tier performance sailing hardware. One of their specialties is Halyard Shackles which are renowned globally among professional competitive sailors for their light weight and high performance.
Alu. Headboard Shackle w/ Integral Thimble, 1/4" Pin: Tyl H5:

Alu. Headboard Shackle w/ Integral Thimble, 5/16" Pin: Tyl H8:

Alu. Headboard Shackle w/ Integral Thimble, 3/8" Pin: Tyl H12:

Alu. Headboard Shackle w/ Integral Thimble, 1/2" Pin: Tyl H20:

High-strength Aluminum Headboard Shackles with Captive Screw Pin have an integral thimble to permanently splice or tie directly to Halyard. Hard coat Anodized Shackles are machined from solid 6061 Aluminum Bar, with a Captive 17-4PH SS Pin these units can boast the highest strength-to-weight ratio of any halyard shackle.

Tylaska H20 photo
Tylaska Standard Headboard Shackles
Part Number Tyl H5 Tyl H8 Tyl H12 Tyl H20
A - Max Length 2.89" (73.3mm) 3.16" (80.2mm) 3.74" (95.0mm) 4.84" (122.9mm)
B 1.07" (27.3mm) 1.32" (33.5mm) 1.50" (38.1mm) 1.84" (46.7mm)
C .22" (5.6mm) .28" (7.1mm) .31" (7.9mm) .42" (10.7mm)
D 1.44" (36.5mm) 1.50" (38.2mm) 1.90" (48.3mm) 2.50" (63.5mm)
E .87" (22.0mm) .83" (21.2mm) 1.14" (29.0mm) 1.50" (38.2mm)
F .63" (16.1mm) .76" (19.3mm) .88" (22.4mm) 1.00" (25.4mm)
G .50" (12.7mm) .56" (14.3mm) .63" (15.9mm) .75" (19.0mm)
H .88" (22.3mm) 1.00" (25.4mm) 1.12" (28.4mm) 1.50" (38.2mm)
I .95" (24.1mm) 1.07" (27.1mm) 1.21" (30.7mm) 1.58" (40.1mm)
J - Pin Size 1/4" (6.6mm) 5/16" (8.1mm) 3/8" (9.7mm) 1/2" (12.7mm)
Line Size 5/16"-7/16" (8-11mm) 3/8"-1/2" (10-12mm) 7/16"-9/16" (11-14mm) 1/2"-5/8" (12-16mm)
Working Load 2,500 lbs (1,130kg) 4,000 lbs (1,810kg) 6,000 lbs (2,720kg) 10,000 lbs (4,540kg)
Breaking Strength 5,000 lbs (2,270kg) 8,000 lbs (3,630kg) 12,000 lbs (5,440kg) 20,000 lbs (9,070kg)
Weight 1.8 oz (52g) 3.1 oz (87g) 4.7 oz (132g) 10.5 oz (296g)

2:1 Headboard Shackle w/ Removable Sheave, 1/4" Pin: Tyl H5-2RS:

2:1 Headboard Shackle w/ Removable Sheave, 5/16" Pin: Tyl H8-2RS:

2:1 Headboard Shackle w/ Removable Sheave, 3/8" Pin: Tyl H12-2RS:

2:1 Headboard Shackle w/ Removable Sheave, 1/2" Pin: Tyl H20-2RS:

High-strength Aluminum Headboard Shackles with Sheave for 2:1 purchase in high load applications. Units feature a Removable Sheave and a Captive 17-4PH SS Screw Pin, Hard coat Anodized Shackles are machined from solid 6061 Aluminum Bar.

Tylaska Shackle with Dimension Layout Tylaska H12-2RS photo
Tylaska 2:1 Headboard Shackles w/ Removable Sheave
Part Number Tyl H5-2RS Tyl H8-2RS Tyl H12-2RS Tyl H20-2RS
A - Max Length 2.92" (74.1mm) 3.31" (84.1mm) 4.08" (103.6mm) 5.25" (133.3mm)
B 1.07" (27.3mm) 1.32" (33.5mm) 1.50" (38.1mm) 1.84" (46.7mm)
C .22" (5.6mm) .28" (7.1mm) .31" (7.9mm) .42" (10.7mm)
D 1.44" (36.5mm) 1.50" (38.2mm) 2.00" (50.8mm) 2.50" (63.5mm)
E .87" (22.0mm) .83" (21.2mm) 1.25" (31.7mm) 1.50" (38.2mm)
F .63" (16.1mm) .76" (19.3mm) .88" (22.4mm) 1.00" (25.4mm)
G .50" (12.7mm) .59" (15.0mm) .66" (16.8mm) .88" (22.2mm)
H .88" (22.3mm) 1.00" (25.4mm) 1.12" (28.4mm) 1.50" (38.2mm)
I .99" (25.1mm) 1.24" (31.5mm) 1.44" (36.5mm) 1.80" (45.6mm)
J - Pin Size 1/4" (6.6mm) 5/16" (8.1mm) 3/8" (9.7mm) 1/2" (12.7mm)
Line Size 5/16"-7/16" (8-11mm) 3/8"-9/16" (10-14mm) 7/16"-5/8" (11-16mm) 1/2"-3/4" (12-18mm)
Working Load 2,500 lbs (1,130kg) 4,000 lbs (1,810kg) 6,000 lbs (2,720kg) 10,000 lbs (4,540kg)
Breaking Strength 5,000 lbs (2,270kg) 8,000 lbs (3,630kg) 12,000 lbs (5,440kg) 20,000 lbs (9,070kg)
Weight 2.1 oz (61g) 3.8 oz (109g) 6.3 oz (180g) 13.5 oz (383g)

Tylaska 2:1 Opening Headboard Shackles w/ Sheave, 5/16" Pin: Tyl H8-2SO:

Tylaska 2:1 Opening Headboard Shackles w/ Sheave, 3/8" Pin: Tyl H12-2SO:

Improving on the Tylaska 2:1 Headboard Shackle with Sheave, these Opening units are easily split, allowing for attachment and removal from the Halyard without the hassle of removing the Sheave. With a Captive 17-4PH stainless pin these units have an unmatched strength-to-weight ratio.
Tylaska Halyard split image
Tylaska 2:1 Split/Opening Headboard Shackles w/ Sheave
Part Number Tyl H8-2SO Tyl H12-2SO
A - Max Length 3.16" (80.2mm) 3.74" (95.0mm)
B 1.32" (33.5mm) 1.50" (38.1mm)
C .28" (7.1mm) .31" (7.9mm)
D 1.50" (38.2mm) 1.90" (48.3mm)
E .83" (21.2mm) 1.14" (29.0mm)
F .76" (19.3mm) .88" (22.4mm)
G .56" (14.3mm) .63" (15.9mm)
H 1.00" (25.4mm) 1.12" (28.4mm)
I 1.07" (27.1mm) 1.21" (30.7mm)
J - Pin Size 5/16" (8.1mm) 3/8" (9.7mm)
Line Size 3/8"-1/2" (10-12mm) 7/16"-9/16" (11-14mm)
Working Load 4,000 lbs (1,810kg) 6,000 lbs (2,720kg)
Breaking Strength 8,000 lbs (3,630kg) 12,000 lbs (5,440kg)
Weight 3.1 oz (87g) 4.7 oz (132g)


Wichard Key Pin Headboard Shackles

Standard Wichard Headboard Shackles are forged from 316L Stainless Steel and are CE certified. Basic units are easily attached to Halyards with an Eye splice or by tying, units with a Retaining Bar prevent Shackle from becoming detached from Halyard inadvertently. Retaining Bar is removable, allowing for attachment to pre-spliced Halyards.
Even stronger HR versions are forged from 17-4 PH Stainless, providing a 25% higher load capacity with identical weights and dimensions.
Please note, none of these shackles are intended for mooring applications.
3/16" Key Pin Shackle: Wic 1432:

1/4" Key Pin Shackle: Wic 1433:

5/16" Key Pin Shackle: Wic 1434:

Suitable also for a variety of non-Headboard applications, these forged Key Pin Shackles have dimensions and strengths identical to those with Retaining Bar.
3/16" Key Pin Headboard Shackle w/ Retaining Bar: Wic 81432:

1/4" Key Pin Headboard Shackle w/ Retaining Bar: Wic 81433:

5/16" Key Pin Headboard Shackle w/ Retaining Bar: Wic 81434:

Forged Key Pin Shackles with a Retaining Bar prevent Shackle from becoming detached from Halyard inadvertently. Retaining Bar is removable for attachment to pre-spliced Halyards.
Wichard 81432 Headboard Shackle photo
3/16" HR Key Pin Headboard Shackle w/ Retaining Bar: Wic 91432:

1/4" HR Key Pin Headboard Shackle w/ Retaining Bar: Wic 91433:

5/16" HR Key Pin Headboard Shackle w/ Retaining Bar: Wic 91434:

HR Key Pin Shackles are forged from 17-4PH Stainless providing a 25% higher strength than the standard ones. These also have a Retaining Bar to prevent Shackle from becoming detached from Halyard inadvertently. Retaining Bar is removable for attachment to pre-spliced Halyards.
Wichard 81432 Headboard Shackle photo
Wichard Shackle with Dimension Layout Wichard Shackle with retaining bar with Dimension Layout
Wichard Key Pin Headboard Shackles
Shackle Size 3/16" (5mm) 1/4" (6mm) 5/16" (8mm)
A 1.45" (36.9mm) 1.77" (44.9mm) 2.33" (59.1mm)
B 0.52" (13.1mm) 0.63" (15.9mm) 0.83" (21.0mm)
C 0.20" (5.2mm) 0.23" (6.0mm) 0.31" (7.9mm)
D 0.44" (11.1mm) 0.52" (13.1mm) 0.67" (17.1mm)
Dia D 0.20" (5.2mm) 0.23" (6mm) 0.31" (7.9mm)
E 0.16" (4mm) 0.16" (4mm) 0.23" (6.0mm)
F 1.92" (48.8mm) 2.36" (59.9mm) 3.12" (79.0mm)
G 1.22" (31.0mm) 1.45" (36.9mm) 1.92" (48.8mm)
L 0.47" (11.9mm) 0.59" (15.1mm) 0.78" (19.8mm)
Working Load 880 lbs (400kg) 1,140 lbs (520kg) 1,760 lbs (800kg)
Working Load HR 1,058 lbs (480kg) 1,322 lbs (600kg) 2,116 lbs (960kg)
Breaking Strength 2,640 lbs (1,200kg) 3,740 lbs (1,700kg) 5,510 lbs (2,500kg)
Breaking Strength HR 3,306 lbs (1,500kg) 4,850 lbs (2,200kg) 7,716 lbs (3,500kg)
Weight 1.1 oz (31g) 1.8 oz (52g) 4.3 oz (123g)

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