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Zinc-plated carbon steel proof coil chain on drum, 5/16 inch links, 75 foot length

Campbell

Campbell T0143526 5/16" Grade 30 Proof Coil Chain Drum

SKU CH-6KTQ-N605B

Zinc-plated carbon steel proof coil chain, 75 ft drum, Grade 30 with 1,900 lb working load limit

  • Proof coil chain suited for marine dock use
  • Grade 30 carbon steel with zinc plated finish
  • 75 ft drum provides 1,900 lb working load limit
  • Welded straight links measure 1-1/4 in inside length
  • Weighs .83 lb per foot for easy handling

Dock chain for mooring and utility

Campbell T0143526 is a 75 ft drum of 5/16 in Grade 30 proof coil chain built for dock lines, mooring and general marine utility. Carbon steel links are welded and zinc plated for corrosion resistance in saltwater environments. The working load limit is 1,900 lb and the chain is not rated for overhead lifting.

Thermals noise and power draw

As a passive metal chain there are no thermals, no fan noise and no electrical power draw during normal use. The zinc plated finish resists rust without requiring active cooling or maintenance. Weight per foot is .83 lb so the full drum handles easily on deck.

Upgrades from lighter rope or smaller chain

This drum replaces lighter rope or smaller chain when a 1,900 lb working load limit and 5/16 in trade size are required for secure mooring. The jump is worth it when abrasion resistance and consistent link dimensions matter for cleats and windlasses. Buyers who need overhead lifting rating or a higher grade chain should look elsewhere.

Highlights

  • Proof coil chain suited for marine dock use
  • Grade 30 carbon steel with zinc plated finish
  • 75 ft drum provides 1,900 lb working load limit
  • Welded straight links measure 1-1/4 in inside length
  • Weighs .83 lb per foot for easy handling

Specifications

BrandCAMPBELL

Questions about this item

How do I uncoil the 75 ft drum without kinking the 5/16 in Grade 30 chain?

Roll the drum on its side and pull the chain straight off the top; never pull from the centre or the welded links will bind and twist.

What wear on the zinc-plated carbon steel links tells me the 5/16 in proof coil chain needs replacing?

Replace the chain when any link shows more than ten percent material loss, deep pitting, elongated inside length beyond 1 1/4 in, or cracked welds.

At what load does the 1,900 lb working load limit become the limiting factor during sustained tension?

The 1,900 lb working load limit is the first limit reached; the chain is not rated for lifting, so continuous loads above that value risk permanent stretch or weld failure.

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