Key Takeaways

• Match the strap to the EMT trade size; do not select by measuring only the strap’s outside width.
• Choose material and finish for the installation environment and compatibility with adjacent components.
• Confirm hole dimensions, strap profile, and required fasteners against the product drawing and project specifications.
• For bulk sourcing, request a dimensional drawing, material details, packaging information, and a written quotation.

Who This Guide Is For

This guide is for electrical contractors, distributors, project buyers, and OEM purchasing teams sourcing metal EMT supports. It is also useful when comparing products from different suppliers or preparing a request for quotation. A strap may look simple, but small differences in fit, finish, or hole placement can affect installation and procurement. Our aim is to help buyers define the requirement clearly before placing an order.

What Is a Metal EMT Two Hole Strap?

A two hole strap is a metal conduit support shaped to follow part of an EMT conduit’s circumference. The strap is placed over the conduit and fixed to a wall, ceiling, or other suitable surface through its two mounting holes. It is a support component, not a conduit connector, coupling, or electrical junction fitting. The correct fastening method depends on the mounting material and the applicable installation requirements.

How It Differs from a One Hole Strap

The main visible difference is the number of mounting holes: a two hole strap has two, while a one hole strap has one. Two mounting points can help keep the strap aligned during installation, but they do not by themselves establish a particular load rating or spacing requirement. Buyers should use the product’s technical information and the project’s governing requirements to determine suitability. Do not assume that two holes make one strap a substitute for another support system.

Sizes, Materials, and Key Specifications

Strap sizing is generally tied to the EMT trade size it is designed to hold. Trade size is a standardized nominal designation, not a direct statement of the conduit’s measured outside diameter. For procurement, specify the EMT trade size and request confirmation that the strap profile is intended for that size. A product drawing can help verify the fit before production or shipment.

Size and Dimensional Checks

Common EMT trade sizes include 1/2 in, 3/4 in, 1 in, and larger sizes, with some product ranges extending to 4 in. This range is a general market reference, not a guarantee that every supplier stocks every size. Check the strap’s inside profile, overall width, thickness, hole diameter, and center-to-center hole spacing when those dimensions matter to your installation. Confirm whether the supplier’s size designation follows the same trade-size convention used in your project documents.

Material and Finish Options

Metal straps may be offered in materials such as steel, stainless steel, or aluminum, depending on the supplier’s range and application. Finishes can include protective coatings or other treatments, but their availability and performance should be verified for the specific product. Consider moisture, exposure, the mounting surface, and contact with neighboring metals when selecting a material and finish. For outdoor, corrosive, or otherwise demanding locations, ask the project engineer or specifier to confirm the required corrosion protection rather than relying on a generic product description.

Specifications to Confirm

• EMT trade size and strap profile
• Base material and material thickness
• Surface finish or coating description
• Hole diameter, hole spacing, and overall dimensions
• Compatible fastener type, where specified
• Packaging quantity, labeling, and any inspection requirements

Where Two Hole EMT Straps Are Used

These straps are used to support EMT runs on suitable building surfaces in commercial, industrial, and residential projects. Typical locations include walls, ceilings, and equipment areas where the conduit route needs to remain secured and orderly. The specific support arrangement depends on the installation design, substrate, conduit size, and applicable electrical requirements. A strap should not be selected as a replacement for a specialized clamp or support where the project calls for one.

Installation spacing is not a universal product dimension: it is governed by the applicable code, project specification, and installation conditions. For this reason, buyers should not rely on a general strap listing to establish support intervals. Confirm spacing and fastening requirements with the responsible designer or qualified installer. This distinction helps separate product selection from installation design.

A Practical Selection Framework

1. Identify the EMT Trade Size

Start with the conduit schedule, drawing, or purchase specification. Record the EMT trade size rather than estimating from a photograph or measuring only the strap opening. If the conduit size is uncertain, verify it with the project team before ordering. This is the first check for avoiding a mismatch between strap and conduit.

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2. Match the Material to the Environment

Define whether the installation is indoors, outdoors, exposed to moisture, or subject to other conditions that may affect material choice. Then compare the strap material and finish with the project specification and adjacent components. If dissimilar metals will be in contact, request technical guidance on compatibility. When requirements are unclear, obtain approval from the project’s technical authority before substitution.

3. Verify Fit and Mounting Details

Review a dimensioned drawing or sample to confirm the strap profile and mounting-hole layout. Check that the intended fasteners suit the substrate and that the holes work with the installation method. A nominal size match is important, but it may not resolve differences in profile or manufacturing dimensions. Ask the supplier to identify the exact model or drawing revision quoted.

4. Align the Product with Project Requirements

Compare the proposed strap with the bill of materials, approved submittal, and any specified material or finish requirements. Do not infer a load rating, certification, or code approval from appearance alone. If the project requires documentation, state that requirement in the inquiry and ask which documents are available for the offered product. Keep the accepted specification with the purchase order to reduce ambiguity.

Pricing, MOQ, and Lead-Time Considerations

Pricing can vary with material, thickness, finish, size, order quantity, packaging, and customization. Minimum order quantities and lead times also depend on the supplier’s production schedule, stock position, and order details, so they should be confirmed for each inquiry. For a meaningful comparison, ask suppliers to quote the same size, material, finish, dimensions, and packaging basis. A lower unit price is not a useful comparison if the specifications differ.

For repeat or project orders, provide a forecast or release schedule where possible. Clarify whether the quotation covers standard products or custom dimensions, and ask how revisions to drawings will be handled. Buyers should also confirm shipment terms, carton quantities, labeling needs, and inspection expectations before order approval. These details can affect total sourcing cost and delivery planning.

Supplier Evaluation Checklist

Before choosing a supplier, check that its offer is specific enough to evaluate and reorder. Request the product description, size range, material and finish details, and a drawing or dimensional confirmation. Ask how the supplier identifies products by size and whether packaging can be labeled for warehouse or project use. If your procurement process requires quality or compliance documents, list them explicitly and confirm availability before ordering.

As a supplier serving buyers in the aluminum pipe and conduit supply chain, SIOSAN can discuss product requirements and sourcing details for metal EMT two hole straps. Share the required trade sizes, material preferences, finish, quantity, destination, and any drawing or documentation needs. We can then confirm the applicable product details, quotation basis, and order conditions for your inquiry. Availability, customization, and lead time should be confirmed against the specific request.

Conclusion: How to Choose the Right Strap

The right metal EMT two hole strap is the one that matches the EMT trade size, suits the installation environment, and meets the project’s dimensional and documentation requirements. Start with the specified conduit size, then verify material, finish, hole layout, and mounting details against a drawing or approved specification. Do not treat a general size range or product photo as proof of fit, load capacity, or compliance. Confirm installation spacing and fastening requirements with the project’s qualified technical team.

For your next step, prepare a concise inquiry with size, material, finish, quantity, destination, and any documentation requirements. SIOSAN can review those details and confirm the available sourcing options and quotation conditions. Clear specifications make supplier comparison easier and help prevent avoidable mismatches during purchasing and installation.