An EMT two hole conduit strap is a metal support fitting used to secure Electrical Metallic Tubing (EMT) to a wall, ceiling, panel, or other structural surface. Its two mounting holes provide more stable attachment than a single-hole strap, especially where the conduit may experience vibration, movement, or mechanical contact. To select the correct strap, I recommend matching the strap size to the outside diameter of the EMT, confirming the mounting surface and fastener type, and checking the applicable project or electrical-code requirements before installation.
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In this guide, I explain common sizes, materials, applications, installation steps, purchasing considerations, and supplier evaluation points. I also identify situations where a two hole strap may not be the best choice. My goal is to help electrical contractors, wholesalers, OEM buyers, and project engineers make a practical and informed sourcing decision.
An EMT two hole conduit strap is a shaped metal clamp with two pre-punched mounting holes. The curved body holds one section of EMT conduit against a surface, while screws, bolts, or other approved fasteners pass through the holes to secure the assembly. The two-point attachment helps distribute the holding force across a wider area than a single mounting point.
These straps are commonly used with thin-wall EMT in commercial, industrial, institutional, and residential electrical installations. They can support conduit runs along concrete, masonry, wood, metal framing, equipment structures, and electrical enclosures when the selected fasteners are suitable for the substrate. The strap is a support component, not a replacement for a connector, coupling, grounding component, or expansion fitting.
EMT two hole straps are normally identified by the nominal trade size of the conduit they are designed to hold. Common EMT sizes include 1/2 inch, 3/4 inch, 1 inch, 1-1/4 inches, 1-1/2 inches, 2 inches, and larger sizes, although availability depends on the manufacturer and market. The strap must fit the actual outside diameter and profile of the conduit rather than being selected only by appearance.
Material selection depends on the installation environment, expected service life, appearance requirements, and compatibility with adjacent metals. Galvanized steel is widely used where mechanical strength and economical sourcing are priorities. Stainless steel may be considered for corrosive or high-moisture environments, while aluminum can be useful when low weight and compatibility with aluminum conduit or structures are important.
| Specification | Why It Matters | Buyer Check |
|---|---|---|
| Nominal conduit size | Determines whether the strap properly surrounds the EMT. | Confirm the size range and actual dimensions. |
| Material and finish | Influences corrosion resistance, weight, appearance, and cost. | Request material details and surface-treatment information. |
| Hole spacing and diameter | Must match the planned fasteners and mounting surface. | Check drawings or samples before mass purchasing. |
| Thickness and forming quality | Affects rigidity, fit, and installation consistency. | Define tolerances and inspection requirements. |
| Packaging quantity | Influences warehouse handling and project planning. | Confirm pieces per box and carton dimensions. |
As practical reference points, a project may use 1/2-inch EMT, fasteners with a nominal 1/4-inch diameter, and installation spacing measured in feet rather than inches. These are examples of common planning values, not universal requirements. The final spacing, fastener type, and support method should follow the applicable electrical code, engineering specification, and site conditions.
Two hole straps are suitable for straight conduit runs where the installer needs a firm, repeatable attachment to the supporting structure. Typical locations include exposed conduit on walls, overhead runs, equipment rooms, electrical rooms, workshops, manufacturing facilities, and service areas. They are also useful when the installation requires a more stable fixing point near a box, panel, bend, or transition.
For outdoor or corrosive locations, the strap material and finish should be selected together with the conduit, fasteners, and supporting hardware. Dissimilar-metal contact can create compatibility concerns in some environments, so I recommend reviewing the complete assembly rather than judging the strap alone. Where the conduit must accommodate thermal movement, vibration, or structural movement, a rigid two hole strap may need to be combined with a suitable expansion or flexible support solution.
First, identify the EMT trade size and inspect the route for bends, couplings, boxes, and obstructions. Measure or verify the outside diameter if the conduit source is unfamiliar, because nominal sizing and actual dimensions are not always interchangeable across products. Then check whether the mounting surface is concrete, masonry, wood, steel, or another material that requires a specific fastener.
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Mark the intended strap positions along the conduit route before drilling. Keep the conduit aligned and allow sufficient room for fittings, covers, access, and maintenance. The exact support interval should be determined by the applicable code or project specification; I do not recommend using a generic interval as a substitute for those requirements.
Place the strap over the EMT and use its two holes to mark the mounting points. Drill or prepare the substrate according to the selected anchor or screw manufacturer’s instructions, then remove debris that could prevent full seating. Use fasteners with suitable diameter, length, head style, corrosion resistance, and load capacity for the surface.
Install both fasteners and tighten them evenly so the strap holds the conduit firmly without crushing or distorting it. The strap should sit naturally against the conduit, with no sharp edge cutting into the tubing. Over-tightening can damage thin-wall conduit, strip the fastener, deform the strap, or weaken the substrate.
After installation, verify that the conduit remains aligned and that the strap does not rotate, loosen, or interfere with fittings. Check the complete run for unsupported sections, excessive movement, sharp edges, and clearance problems. Where the installation is part of a regulated electrical system, final inspection should be performed by the responsible qualified professional.
For a small repair, stock availability may be the main concern. For a commercial or industrial project, I recommend evaluating dimensional consistency, material traceability, packaging, quality-control procedures, production capacity, and communication speed. A supplier should be able to provide product drawings, sample approval, packing information, and a clear explanation of available finishes without making claims that cannot be documented.
At SIOSAN, we support B2B buyers who need aluminum pipes and related metal components with clear product communication and project-oriented sourcing assistance. Depending on the specification, we can discuss material selection, dimensions, surface treatment, packaging, sample review, and production coordination. Buyers should provide the EMT size, required quantity, application environment, drawings, finish preference, and delivery destination so that we can assess the most suitable supply arrangement.
The unit price of an EMT two hole strap is influenced by material, thickness, finish, tooling, order quantity, packaging, and inspection requirements. Small standard orders may have a higher per-piece cost because setup and packing are spread across fewer units. Custom hole spacing, special stamping, private labeling, or non-standard materials may also affect minimum order quantity and lead time.
To compare quotations fairly, I recommend requesting the same dimensional specification from every supplier. The quotation should state material, finish, size range, tolerance expectations, packing quantity, sample terms, production schedule, and shipping basis. This approach reduces the risk of comparing a low-priced standard item with a higher-specification custom component.
An EMT two hole conduit strap is a practical support fitting for securing EMT to a stable surface through two mounting points. The correct choice depends on conduit size, actual dimensions, material compatibility, hole configuration, substrate, fastener selection, environmental exposure, and project requirements. A two hole strap offers stable attachment, but it is not automatically suitable for every moving, vibrating, corrosive, or expansion-prone installation.
Before purchasing, confirm the conduit size and drawing, define the material and finish, select compatible fasteners, and verify support spacing against the applicable requirements. If you are sourcing for a larger project, prepare your quantity forecast and packaging needs before requesting quotations. Contact SIOSAN with your specifications so we can review the required aluminum or metal component solution, discuss sample and production options, and help you move from product selection to a more reliable B2B order.
Contact us to discuss your requirements of EMT Two Hole Conduit Strap. Our experienced sales team can help you identify the options that best suit your needs.
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