The Wichard Wire Rope Grip (7308W) is a three-piece stainless steel U-bolt clamp that mechanically secures 11/32 in (8.7 mm) wire rope terminations without a swage press, making it a practical field repair for standing and running rigging on vintage sailboats. For owners of a ZSPAR-masted vessel — such as a 1986 O'Day — it is the correct-size fix for boom vang pennants, topping lift wire, and reefing cores near the gooseneck, where age-related corrosion often surfaces alongside a failed gooseneck bracket.
Wichard wire rope grips at a glance
| Wire diameter | Common application | 7308W compatible? |
|---|---|---|
| 3/16 in (5 mm) | Light control lines, small-boat pennants | No — use smaller grip (7304) |
| 5/16 in (8 mm) | Shrouds on 30–35 ft cruisers | No — use smaller grip (7306) |
| 11/32 in (8.7 mm) | Vang pennants, topping lifts, 1986 O'Day rigging | Yes — exact match (7308W) |
| 3/8 in (9.5 mm)+ | Forestay / standing rigging on 38 ft+ vessels | No — use larger grip size |
What is the Wichard Wire Rope Grip 7308W and how does it work?
The Wichard 7308W is a forged and polished marine-grade stainless steel wire rope grip made of three components: a U-bolt, a flat saddle (bridge), and two hex nuts. The U-bolt wraps beneath the wire rope and the saddle bears down on top, distributing clamping load evenly across the wire's outer strands as the nuts are torqued. This lets you secure a termination against axial tension without a swage press or specialized tooling.
The 7308W is rated specifically for 11/32 in (8.7 mm) wire — a size that corresponds to the 1x19 and 7x7 stainless wire rope used on standing rigging and control systems aboard many production cruisers built from the 1970s through the 1990s, including ZSPAR-masted vessels. Wichard manufactures the fitting to ISO standards, and its stainless construction resists the salt and moisture exposure that corrodes lesser hardware over a 35-plus-year service life.
Where does a wire rope grip fit in a gooseneck bracket ZSPAR mast repair?
On a ZSPAR-extruded aluminum mast, as found on a 1986 O'Day 25, 28, or 35, the gooseneck bracket attaches the boom to the mast via a track slug or pin fitting. The gooseneck itself is a pivot point and does not directly terminate wire rope — so its own fasteners require mechanical fastener replacement, not a grip. What a grip fixes is the rigging around that station: a boom vang wire pennant, a topping lift termination, or a reefing line wire core.
If your vang wire, topping lift, or reefing pennant shows a failed or corroded terminal near the gooseneck, the 7308W provides a field-viable termination. Installed correctly — following the "never saddle a dead horse" rule, with the saddle always on the live (load-bearing) side of the wire — grips achieve roughly 80% of the wire's rated breaking strength, which is adequate for most cruising applications when the correct number are installed in series.
How do I select the correct Wichard wire rope grip?
Grip selection is determined first by wire diameter, then by the number of grips required for adequate load retention. The 7308W is purpose-built for 11/32 in (8.7 mm) wire; a grip sized even one step up or down reduces clamping effectiveness and can damage the wire's outer strands under load. Measure your existing wire with calipers before ordering — nominal wire sizes and actual measured diameters can differ slightly between manufacturers. Wichard offers matching grips down to 3/16 in (5 mm) and 5/16 in (8 mm) for lighter lines and smaller shrouds.
How do I install Wichard wire rope grips correctly?
Correct installation of the 7308W follows the standard U-bolt grip procedure. Place the first grip as close to the thimble or eye as practical, with the saddle on the live (load) side of the wire and the U-bolt over the dead (short) end. Space additional grips at intervals of six times the wire diameter — about 2 inches (50 mm) apart for 8.7 mm wire — and use a minimum of three grips for cruising applications.
Tighten the hex nuts evenly, alternating between the two nuts on each grip rather than fully torquing one before the other. After applying initial load — even a short dock test — re-torque every grip, because wire rope compresses slightly under first load and the nuts will have loosened. Inspect annually or after any heavy-weather event. The stainless hardware needs no lubrication, but verify the nuts have not backed off from vibration.
Frequently asked questions
What wire diameter is the Wichard 7308W compatible with?
The 7308W is sized specifically for 11/32 in (8.7 mm) wire rope, a common diameter on vang pennants, topping lifts, and mid-size cruiser rigging. Confirm your wire with calipers before ordering, since Wichard produces grips in several sizes.
How do I install the grip so it holds under load?
Position the saddle on the live (load-bearing) side of the wire — never on the dead end — following the "never saddle a dead horse" rule. Use at least three grips spaced about six wire diameters apart, torque the nuts evenly, and re-torque after the first load application.
Is the 7308W corrosion-resistant for saltwater use?
Yes. It is forged from marine-grade stainless steel by Wichard, a French manufacturer with more than 150 years of forged-fitting experience. Rinse with fresh water after saltwater exposure and inspect the threads periodically to extend service life.
Can a wire rope grip be a permanent rigging termination?
Grips are mechanical clamp fittings best suited to field repairs, emergency rigging, and non-critical terminations. For permanent standing rigging, swaged or Sta-Lok-style mechanical terminals offer superior fatigue resistance; the 7308W is the reliable fix to get a vessel safely back to port.
Does the grip work on the gooseneck bracket itself?
No. The gooseneck is a pivot fitting and its fasteners must be replaced mechanically. The 7308W applies to the wire terminations near the gooseneck — vang pennants, topping lifts, and reefing wire cores — not to the bracket hardware.
What size do I need for other wire diameters?
Step down to the 5/16 in (8 mm) or 3/16 in (5 mm) Wichard grip for smaller wire, and up to a larger grip for 3/8 in (9.5 mm) and above. Matching the grip to the measured wire diameter is what preserves safe clamping geometry and load transfer.
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