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The National Hardware U Bolt Fastener (#632-3/8" x 2" x 3-1/2") is a heavy-duty, zinc-plated steel wire U-bolt designed for reliable fastening of pipes, wood, and various materials. Featuring precise dimensions, a complete mounting kit, and superior corrosion resistance, it delivers professional-grade durability and versatility for indoor and outdoor applications. Trusted by professionals and DIYers alike, it integrates seamlessly with existing hardware systems and is backed by over 100 years of manufacturing excellence.











| ASIN | B000BPPUO0 |
| Best Sellers Rank | #198,995 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #159 in U-Bolts |
| Brand | National Hardware |
| Color | Zinc Plated |
| Compatible Groove Diameter | 0.38 inches |
| Customer Reviews | 4.5 4.5 out of 5 stars (79) |
| Exterior Finish | Zinc |
| Fastener Size | 3/8 inches |
| Fastener Type | U-Bolt |
| Finish Types | Zinc plated |
| Global Trade Identification Number | 00038613126190 |
| Grade Rating | Grade 2 |
| Head Type | Flange |
| Included Components | National Hardware N222-190 2190BC U Bolt in Zinc plated,#632-3/8"x2"x3-1/2" |
| Item Diameter | 0.38 inches |
| Item Dimensions | 11 x 8.4 x 0.5 inches |
| Item Hardness | Grade 2 |
| Item Highlight | Includes Plate and Nuts to Clamp Pipe, Posts and Wood; Corrosion-Resistant Steel for Indoor or Outdoor Use |
| Item Type Name | Stanley National Hardware N222-190 2190BC U Bolt Zinc plated, 3/8" x 2" x 3-1/2" |
| Manufacturer | National Hardware |
| Manufacturer Grade | Grade Z1 |
| Material Type | Stainless Steel |
| Maximum Shear Strength | high |
| Metal Type | Alloy Steel |
| Model | N222-190 |
| Number Of Items | 1 |
| Number of Pieces | 1 |
| Outside Diameter | 0.38 inches |
| Part Number | N222-190 |
| Screw Head Style | U-Bolt |
| Screw Point Style | U-Bolt |
| Set Screw Thread Type | Unified National Coarse (UNC) |
| Size Name | #632-3/8"x2"x3-1/2" |
| Thread Coverage | Fully Threaded |
| Thread Size | #0-80 |
| Thread Style | Left Hand |
| Thread Type | Unc |
| UPC | 038613126190 |
| Unit Count | 1 Count |
| Warranty Description | Warranty |
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