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🔧 Secure your projects with strength and style — don’t get left behind!
The National Hardware N222-398 2192BC Square U Bolt is a zinc-plated, 3/8" diameter, 4" x 5" steel fastener designed for securing rectangular wood and metal objects. Featuring a corrosion-resistant finish and included nuts, it offers durable, reliable performance trusted by professionals and DIYers alike.
| ASIN | B000BQM05Q |
| Best Sellers Rank | #23,594 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #10 in U-Bolts |
| Brand | National Hardware |
| Color | Zinc plated |
| Customer Reviews | 4.6 out of 5 stars 1,673 Reviews |
| Drive System | Square |
| Exterior Finish | Zinc |
| Fastener Type | U-Bolt |
| Finish Types | Zinc plated |
| Global Trade Identification Number | 00038613178731 |
| Grade Rating | Grade 2 |
| Head Style | Square |
| Included Components | National Manufacturing 222398 8418-345 Us2c 3/8x4x5" Steel Sq "U" Bolts W/Nuts Assem Zinc (13-4280) |
| Item Diameter | 0.38 Inches |
| Item Dimensions | 13 x 8.4 x 2.8 inches |
| Item Type Name | Stanley National Hardware N222-398 2192BC Square U Bolt Zinc plated, 3/8" x 4" x 5" |
| Item Weight | 6.4 ounces |
| Manufacturer | National Hardware |
| Manufacturer Grade | Grade Z1 |
| Material | zinc plated |
| Material Type | zinc plated |
| Metal Type | Zinc |
| Number of Pieces | 1 |
| Screw Head Style | Square |
| Size Name | 3/8" x 4" x 5" |
| Thread Class | Standard U-bolt thread class |
| Thread Coverage | Double End Threaded |
| Thread Size | 3/8 inch |
| Thread Style | Right Hand |
| Thread Type | Unc Or Unf |
| UPC | 038613178731 |
| Unit Count | 1.0 Count |
| Warranty Description | Warranty |
W**W
Good item
Appeared to be a good product and it should work well.
T**D
fit like a glove and workd like a charm
Product fit perfectly for what I needed if for, was able to complete my project and on to the next one, was easy to install, plenty of thickness and overall strength is that of normal zinc bolts
V**S
High quality, strong u-bolts
Very strong square u-bolt, love it. Fits my 4" galvanized posts perfectly. I'm using them to hold cleats to the post so I can tie off rope to them, without having to drill any holes.
L**Y
Size matters
These worked for a bumper spare tire rack.
T**S
Hold on
Great value for the money. I used this to mount a toolbox to my camper bumper and it holds great. I added a second nut to lock it in with locking washers. No rust so far.
E**E
Exactly what I needed!
Used these to install ammo cans to my campers square bumper. Worked like a charm! Very well made and durable.
A**R
Just right
Work as intended. Fit over motorhome bumper perfectly
S**R
Missing nut
I received my U bolts but one of them was missing a (1)nut. The U bolts are not in a package to prevent loose pieces.
Trustpilot
Hace 1 mes
Hace 1 mes