Chainplates, Hanks, Slides and Accessories

Every time you hoist or lower sails, the sliding and fastening system is put to the test. A jammed slide or a worn hank are not just annoyances but potential critical points that can compromise the effectiveness of the rig. Choosing these small components requires attention to material: AISI 316 stainless steel is the minimum standard to resist corrosion in a marine environment, where salt works constantly to degrade metal surfaces.

At Nautiba, our technical approach starts with an analysis of your boat. We do not simply provide the part; we verify that the type of slide is genuinely compatible with the mast or boom track on your boat. A common mistake is to rely on appearance alone, ignoring dimensional tolerances that, if not respected, lead to jamming or premature wear of the track.

Our workshop experience guides us in recommending practical solutions. When you contact us, we are not just trying to close an order but to give you confidence that the component meets the working loads specified by your sail plan. We always monitor ETAs because we know that if you are stuck in port waiting for a part, your time is valuable and should not be wasted on unnecessary delays.

Keep in mind that even the strongest chainplate loses effectiveness if the mounting hardware or mating fasteners are not adequate. Always make sure the breaking load (BL) is correctly sized relative to the tension exerted by the standing rigging. If you have doubts about the compatibility between the hank type and the sail luff, ask for support before proceeding, to avoid returns or unnecessary technical complications.

What to Check Before Buying Chainplates and Slides

• Always verify the millimeter dimensions of the mast track: a slide that is too wide will not run, and one that is too narrow risks jumping out under load.
• Check the compatibility between the slide material and the mast material to avoid galvanic corrosion between dissimilar metals.
• Evaluate the working load SWL (Safe Working Load) relative to the sail area you will be managing with that component.
• Inspect the chainplate mounting holes: if they show signs of elongation or deep rust, that is a signal that the metal has experienced structural stress.
• Choose locking systems that allow periodic maintenance so you can wash out accumulated salt and prevent buildup from forming.

How do I tell if a slide is worn?

A slide should be replaced when it shows clear signs of deformation, excessive play in the track, or when the attachment pin is worn from friction. If you feel resistance or hear metallic noises during movement, it is time to act.

What is the difference between AISI 304 and AISI 316?

AISI 316 contains a percentage of molybdenum that makes it noticeably more resistant to salt corrosion than AISI 304. At sea, the use of AISI 316 is strongly recommended for every exposed component.

Is it necessary to lubricate hanks?

A light application of a marine-specific product can help with smooth movement, but be careful: overly thick greases attract dust and salt, creating an abrasive effect that degrades sliding performance over time.

What does SWL mean on a chainplate?

SWL stands for Safe Working Load. It is the maximum weight, expressed in kilograms, that the component can bear under normal operating conditions without permanent deformation.

How can I verify compatibility before ordering?

Before ordering, compare the manufacturer's datasheets with the actual measurements taken on board. If you have doubts, our technical support can help you cross-reference the data to avoid purchasing errors.