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National Hardware 1/2 in. X 3 in. W X 5-1/2 in. L Coarse Zinc-Plated Steel U-Bolt

National Hardware 1/2 in. X 3 in. W X 5-1/2 in. L Coarse Zinc-Plated Steel U-Bolt

National Hardware 1/2 in. Coarse-Thread Zinc-Plated Steel U-Bolt delivers a dependable clamp for securing round stock, pipes, and conduit to a solid surface. Crafted from durable s…

National Hardware MPN N347-807 In Stock & Ready to Ship
Local Price Check i Local stores may price this as low as $10.99. Our online price is $11.99.
$11.99
Includes free shipping on orders over $75 · $8.99 standard below
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Every order helps keep your local hardware store on the corner.

Why we built NHG
You might find it for less locally. Independent retailers often offer competitive pricing — some products are even cheaper in-store than online.
Real expert advice — not search results. Independent hardware staff know their inventory and the local conditions you're working in.
Keep the neighborhood working. Every dollar spent at an independent retailer returns roughly 3x more to your local economy than at a national chain.

About Product Overview

National Hardware 1/2 in. Coarse-Thread Zinc-Plated Steel U-Bolt delivers a dependable clamp for securing round stock, pipes, and conduit to a solid surface. Crafted from durable steel and finished with a zinc coating, this U-bolt resists corrosion, making it a versatile choice for both indoor projects and outdoor installations.

Key details

  • Dimensions: Length 5-1/2 in; inside width 3 in; thread size 1/2 in (coarse).
  • Material & finish: Zinc-plated steel for dependable corrosion resistance and long service life.
  • Packaging: 1 U-bolt per bag, ready to use out of the packaging.
  • Type: U-bolt with coarse thread, National Hardware brand.

Real-world uses

  • Secure pipes, conduit, or tubing to walls, frames, or supports in garages, basements, or utility spaces.
  • Attach round stock to wooden or metal frames in DIY projects, fencing, or light structural work.
  • Suitable for temporary or semi-permanent installations where rust resistance matters.

Installation tips

  • Wrap the U-bolt around the item, align the legs with the mounting surface, then thread on nuts until snug. If you want to protect delicate surfaces, add washers to distribute pressure.
  • In outdoor or damp environments, check the setup periodically to maintain a secure clamping force and prevent loosening over time.

Who should consider this U-bolt?

  • Homeowners tackling plumbing, fencing, or small framing projects.
  • Tradespeople installing conduits, pipes, or tubing in professional settings.
  • Property managers maintaining outdoor structures that require tough, rust-resistant fasteners.

The Details Specifications

Brand National Hardware
SKU 5707989
UPC 038613347809
Unit 0
Case Pack Quantity 5 per case
Retail Unit Quantity 1
Unit of Measure 0 0
Dimensions (L × W × H) 6 × 5 × 1
Weight 1 lbs
Cubic Feet 0.04398 ft³
Country of Origin CHINA
Safety Data Sheet (SDS) Manufacturer documentation · opens in new tab

Ask our counter. Or theirs.

Most hardware stores can do more than you think. If we can't help you, the folks down the street probably can — just ask at the counter.

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Independent Network Real hardware stores
$0.68 of every dollar spent at a local independent business stays in the community. At a national chain, it's about fifteen cents. Civic Economics, multi-city retail studies
Their Counter
Try local first · we'll wait

The stores we send you to are local and independently run — often for generations, the kind of place where someone behind the counter knows the regulars. We don't own them. We just think they deserve the foot traffic. They can put most of what we sell on their next truck. Ask there before you check out here.

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About our directory. National Hardware Group is an independent retailer and directory. The local stores we list and link to are separately owned and operated — we have no ownership stake in any of them, and most pay us nothing to be included. That includes plenty of stores flying a co-op banner that people don't realize are locally owned and run, not operated by a corporation. Store owners can choose to upgrade their listing for an enhanced presence or pickup features, but the base directory is free, and inclusion is never a paid endorsement.

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