Clamcleat

Based in Welwyn Garden City, Hertfordshire, Clamcleats Limited produces jam cleats and specialized line-tensioning hardware for marine, leisure, and industrial sectors. Founded in 1965 following the invention of a V-grooved, ridge-locked cord retainer with no moving parts, the third-generation family business manufactures over 125 active cleat designs alongside technical rope accessories.

The product line spans lightweight marine-grade nylon units and hard-anodized aluminium models engineered for higher loads, thermal exposure, and racing applications. Hardware configurations include deck-mounted fittings, mast cleats, mid-air line tensioners, auto-release mini cleats, and specialized accessories such as DAME Award-winning Keepers that prevent unintended rope disengagement. Beyond dinghy, windsurfing, and superyacht rigging, hardware designs adapt to kitesurfing, outdoor gear, and commercial industrial uses.

Manufacturing operations remain centralized at the company’s main UK production facility, overseeing full project lifecycles from CAD design and toolmaking through die-casting, plastic injection molding, finishing, and packaging. The business also manages a dedicated trade injection molding division and an overseas plastic molding facility in Costa Rica to support broader commercial manufacturing requirements.

Supported by a global distribution network, Clamcleats Limited supplies original equipment boatbuilders, aftermarket marine chandleries, and industrial clients worldwide. In-house engineering capabilities allow technical teams to deliver custom cleat modifications and bespoke hardware solutions for specialized rigging challenges across international markets.