New Thru Hulls Reduce Weight & Improve Styling Consistency

The Nysteel line uses 316 stainless steel plus a nylon mounting nut, for a high level corrosion resistance. Because this design is produced through an innovative casting process, it provides a strong, yet lightweight, solution that delivers a significant reduction in the material cross section as compared to a machined thru hull. The cast thread design also minimises rust potential as compared to machine-cut threads.

Nysteel thru hulls are available with both round and oval face designs, each accommodating a range of barb dimensions to satisfy the six most popular hose sizes – from 16mm to 38mm. Each face design installs in a round hole. A key feature on the back side of the barb enables one-man installation to minimise production time and costs. The round face design is available for hull thicknesses ranging up to 80mm. The oval face design fits hulls up to 34mm.

The all-nylon body of the Stalon thru hull design is co-injected into a 316 stainless steel cap to provide permanent attachment. This delivers a cost-effective, lightweight solution with all the attractiveness of a stainless steel exterior. The Stalon line is available with round faceplates in a variety of barb sizes, from 13mm to 52mm. Various Stalon thru-hull styles accommodate hull thicknesses up to 100mm.

The same Stalon construction is also available in a 90o and a 15o style to accommodate specific mounting requirements and to prevent water from being trapped in the drain hose. In addition, a Stalon manifold is available with female ports to accommodate four 19mm pipes, or with female ports designed to accommodate one 32mm and three 19mm pipes.

Common shapes and sizes for the stainless steel exterior faceplates of both the Nysteel and Stalon lines enable boat designers to standardise on one look for all their thru hull needs. This consistency is patterned after Southco Marine’s One Look, One Lock approach to marine hardware aesthetics. For example, the Nysteel round face designs are available in three standard diameters – 43mm, 55mm and 78mm – while the Nysteel oval face designs are all 68 x 54mm. Each of the faceplate sizes is available for multiple barb dimensions to satisfy common hose sizes.

These two new stainless steel/nylon designs are the latest additions to a comprehensive line of Southco Marine all-stainless thru hulls, strainer intake thru hulls, exhaust thru hulls, and manifold thru hull assemblies.