NRS Frame U-bolt

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The NRS Frame U-bolt is a stainless steel attachment point for NRS rafts. For LoPro fittings and accessories. Curve of the U-bolt is flattened, or “coined”, to reduce impact on boa t material. It’s shaped to fit our 1 5/8" diameter frame pipe. The 2 1/8" deep Standard size U-bolt is used with LoPro Frame Fittings. We use the longer 2 5/8" deep Oversized U-bolt with our Raft and Cataraft Anchor Systems, Lower Cat Rail Spreader Bars and Cataraft Frame Aluminum Floors. Folks building their own custom frames may also find use for these U-bolts. Tips of threaded shanks are rounded, eliminating sharp edges. Each U-bolt comes with two 5/16" zinc-coated nylon locknuts and two zinc-coated flat washers. Bolt thread is 5/16"-18. Show more