Metallics HMC128SS 5.69 to 8.5 Hose Clamp 18-8

The HMC128SS adjusts over a 5.69 to 8.5 range, so it will close down on pipe, conduit, hose or duct anywhere inside that band. If the outside diameter of what you are clamping falls below 5.69, the band will not draw tight enough and you need a smaller clamp size.

Yes, it is an 18-8 stainless clamp. 18-8 is the austenitic 300-series grade (roughly 18 percent chromium, 8 percent nickel) commonly specified where a plated or carbon steel band would rust, so it holds up better in damp mechanical rooms, exterior runs and washdown areas than a zinc-plated worm clamp.

Order Metallics HMC128SS. That is the manufacturer part number and the only model in the family covering the 5.69 to 8.5 range in 18-8 stainless, so there is no finish or size suffix to add.

That is a common use for it. The HMC128SS is a banded clamp carried as conduit-clamp hardware, and its 5.69 to 8.5 adjustment covers large-diameter conduit, flex, hose and sleeve work where a fixed-size strap or one-hole strap will not take up slack. Keep in mind a hose clamp wraps and tensions around the run, it does not itself fasten to structure, so you still need a hanger, strut clamp or strap where code requires the run to be supported.