M6 M8 U - Bolt Exhaust Clamp with Hex Nuts — 304 Stainless Steel Pipe Tube Clip - HomeDIYer

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M6 M8 U-Bolt Exhaust Clamp with Hex Nuts — 304 Stainless Steel Pipe Tube Clip

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Thread Dia.&M: M6

Fit for tube OD: 14mm

Qty(Piece): 1pc

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$4.90 USD

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U-Bolt Exhaust Clamp in 304 Stainless Steel — Secure Any Pipe from 14mm to 161mm OD

Whether you're chasing an exhaust rattle under the car, securing a water line in the garage, or mounting conduit to a structural beam, a loose or rusted pipe clamp is the last thing you want to deal with mid-project. These M6 and M8 U-bolt exhaust clamps give DIYers, mechanics, and tradespeople a reliable, corrosion-resistant fastening solution that won't let go — even under vibration and moisture.

Each set includes one 304 stainless steel U-bolt body plus two matching metric hex nuts. Available in M6 (6mm thread) and M8 (8mm thread) diameters, with tube OD fitment options ranging from 14mm (≈9/16") to 161mm (≈6-5/16"), covering the most common pipe and tube sizes used in automotive, plumbing, and general construction. Order in quantities of 1, 2, 5, or 10 pieces to match your project scope.

Typical use cases include automotive exhaust pipe clamps for muffler and mid-pipe connections, securing round steel or copper tubing to wall brackets in plumbing and HVAC work, and mounting fence rails or handrails to posts in outdoor structural applications — all situations where a stainless steel U-bolt with hex nuts outperforms plastic clips or mild steel alternatives.

ℹ️ Compatibility Note: Select your thread diameter (M6 or M8) and the tube OD that matches your pipe's outer diameter. If you are unsure of your pipe OD, measure with calipers before ordering. Each U-bolt includes 2 hex nuts — no additional hardware required for basic installation.

✅ Key Features of These 304 Stainless Steel U-Bolt Pipe Clamps

🔩304 Stainless Steel Construction — Resists rust, oxidation, and surface corrosion in outdoor, automotive, and damp environments without surface coatings that can chip or peel over time.
📐Wide OD Range: 14mm–161mm — Covers small copper tubing up to large-diameter steel pipe, making these U-bolt exhaust clamps useful across automotive, plumbing, and structural mounting tasks.
🔧Two Hex Nuts Included Per Piece — Standard ISO metric M6 or M8 hex nuts are pre-matched to the thread, so you can install immediately without sourcing additional hardware.
⚙️Threaded Legs for Secure Clamping — The U-bolt's threaded shanks pass through a mounting plate or bracket and are tightened evenly with the included nuts, distributing clamping force uniformly around the pipe circumference.
🚗Vibration-Resistant for Exhaust Applications — The rigid stainless steel body maintains its shape under the thermal cycling and mechanical vibration typical of automotive exhaust clamp installations.
📦Flexible Quantity Options (1–10 pcs) — Order a single piece for a quick repair or a 10-pack for multi-point pipe mounting projects, with per-unit cost decreasing at higher quantities.

📐 Technical Specifications — U-Bolt Pipe Tube Clamp

Material	304 Stainless Steel
Thread Diameter	M6 (6mm) or M8 (8mm) — select variant
Thread Standard	ISO Metric Coarse Pitch
Tube OD Range	14mm (≈9/16") — 161mm (≈6-5/16") — select variant
Included Hardware	1× U-bolt body + 2× matching hex nuts per piece
Finish	Brushed / natural stainless (no coating)
Quantity per Order	1pc / 2pc / 5pc / 10pc — select variant
Typical Applications	Exhaust clamp, pipe mounting, conduit support, structural tube clamp
Leg Length	See variant options
Wire / Rod Diameter	Contact us to confirm

⚠️ Sizing Tip: Always measure your pipe's outer diameter (OD) before selecting a variant. Nominal pipe sizes (e.g., "1-inch pipe") do not equal the actual OD. Use calipers for the most accurate measurement.

❓ Frequently Asked Questions

How do I choose the right tube OD size for my U-bolt?

Measure the outer diameter (OD) of your pipe or tube with calipers or a tape measure, then select the matching variant. For reference, a 1-inch nominal pipe typically has an OD of approximately 33–34mm, so the 34mm variant is generally the correct choice. When in doubt, size up slightly — a slightly larger U-bolt can still be clamped securely with the included hex nuts.

Quick inch-to-mm reference: 1/2" ≈ 14mm | 5/8" ≈ 16mm | 7/8" ≈ 22mm | 1-1/16" ≈ 27mm | 1-5/16" ≈ 34mm | 1-5/8" ≈ 42mm | 1-7/8" ≈ 48mm | 2" ≈ 51mm | 2-3/8" ≈ 60mm | 3" ≈ 76mm | 3-1/2" ≈ 90mm | 4-1/2" ≈ 114mm | 6-5/16" ≈ 161mm

What thread size do M6 and M8 refer to?

M6 refers to a 6mm metric thread diameter and M8 refers to an 8mm metric thread diameter. M6 U-bolts are typically used for lighter-duty clamping on smaller pipes, while M8 U-bolts provide greater clamping force and are suited for larger or heavier pipes. Both use standard ISO metric coarse-pitch threads, and the matching hex nuts are included.

How strong are these U-bolts — can they handle vibration from an exhaust system?

304 stainless steel generally provides good tensile strength and fatigue resistance under cyclic loading, making these U-bolt exhaust clamps suitable for typical automotive exhaust applications. For high-performance or heavy-duty exhaust systems with extreme heat cycles, we recommend confirming the load requirements with a qualified mechanic before installation.

Are these U-bolts suitable for outdoor or marine use?

Yes. 304 stainless steel offers good corrosion resistance in most outdoor environments, including rain, humidity, and mild salt air. For direct saltwater immersion or highly corrosive marine environments, 316 stainless steel is generally recommended. These stainless steel pipe clamps are well-suited for outdoor plumbing, fence post mounting, and general exterior DIY projects.

What thread standard do these U-bolts use — are they compatible with standard hex nuts?

These U-bolts use standard ISO metric coarse-pitch threads (M6 or M8). The two hex nuts included in each set are matched to the thread. They are compatible with any standard M6 or M8 metric hex nut, washer, or flange nut available at hardware stores, so replacements are easy to source if needed.

How many pieces come in each order, and what's included?

You can select 1pc, 2pc, 5pc, or 10pc per order. Each piece includes one U-bolt body plus two hex nuts. Buying in larger quantities (5pc or 10pc) reduces the per-unit cost, which is useful for projects requiring multiple clamp points such as securing a run of pipe along a wall or replacing several exhaust clamps at once.

Can I use these U-bolts to mount pipes to a wall or structural support?

Yes. U-bolts are commonly used to secure pipes, conduit, and round tubes to flat surfaces such as wall brackets, beams, or mounting plates. Pass the threaded legs through holes in your mounting plate and tighten the hex nuts evenly on both sides. Ensure the mounting surface and bracket are rated for the load you intend to apply.

🛒 Select your thread size, tube OD, and quantity above, then add to cart — ships from our US warehouse.

M6 M8 U-Bolt Exhaust Clamp with Hex Nuts — 304 Stainless Steel Pipe Tube Clip

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Beschreibung

U-Bolt Exhaust Clamp in 304 Stainless Steel — Secure Any Pipe from 14mm to 161mm OD

✅ Key Features of These 304 Stainless Steel U-Bolt Pipe Clamps

📐 Technical Specifications — U-Bolt Pipe Tube Clamp

❓ Frequently Asked Questions

M6 M8 U-Bolt Exhaust Clamp with Hex Nuts — 304 Stainless Steel Pipe Tube Clip

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