Strain plates are hardware components used in utility pole applications to protect wood poles from damage caused by guy wires or messenger strands. The plates provide a reinforced bearing surface that distributes loads and protects wood fibers, ensuring secure attachment and preventing strand slippage or pole cutting in wrapped guy installations.
Common dimensions include widths of 4 to 6 inches and lengths of 7 to 8 inches, with thickness ranging from 13 to 14 gauge. The plates feature a curved design with radii of 4.5 or 5 inches to conform to pole surfaces, enhancing contact and stability. Four nail holes, typically 3/16 inch in diameter and located at each corner, facilitate secure fastening to wood poles using standard nails or bolts.
Strain plates are manufactured from high-quality steel and hot-dip galvanized according to American Society for Testing and Materials (ASTM) Specification A153, providing corrosion resistance and durability in various environmental conditions. Products may be designated as Buy America Qualified and Rural Utilities Service (RUS) listed, confirming their suitability for utility infrastructure projects.
Standard packaging includes cartons of 100 pieces, with unit weights of approximately 0.7 to 0.73 pounds. Bulk orders are available in pallet quantities up to 3200 units.
Strain Plate Manufacturer
RaxPower Strain Plates are used for fixing the insulators to the overhead power transmission line or substation. As a specialized hardware supplier for the utility power industry, RaxPower leverages its 21 years of manufacturing expertise and advanced processes like hot forging to produce these plates with greater strength and precise sizing.
Made from Carbon Steel and Hot Dip Galvanized to meet ASTM A153 specification, they ensure durability and corrosion resistance. Installation is performed by utility workers using bolts or other hardware for secure attachment.
Available in a full selection of sizes, including thicknesses of 1/2″, 5/8″, and 3/4″ with 3 or 4 hole options, our Strain Plates are backed by strict quality control, including raw material selection and multi-stage testing.
We offer them in a comprehensive range; simply provide the size, diameter, or part number to receive a quote. Contact us via email, call, or message for orders and further assistance.
| Parameter | Specification |
|---|---|
| Width | 4 – 6 in |
| Length | 7 – 8 in |
| Thickness | 13 – 14 gauge |
| Radius | 4.5 – 5 in |
| Nail Holes | 4 holes, 3/16 in diameter |
| Material | Steel |
| Coating | Hot-dip galvanized |
| Galvanization Standard | ASTM A153 |
| Certifications | ASTM A153, RUS listed, Buy America Qualified (valid through December 2025) |
| Unit Weight | 0.7 – 0.73 lb |
| Standard Pack Quantity | 100 pieces |
| Pallet Quantity | 3200 pieces |
Frequently Asked Questions (FAQS)
What is a strain plate used for?
Strain plates prevent strand from damaging wood utility poles, prevent pole cutting by guy or messenger strand, and provide a bearing surface for the strand in wrap type guying installations.
What material and corrosion protection do your strain plates have?
Our strain plates are constructed from high-quality steel and are hot-dip galvanized per ASTM A153, providing a protective coating that withstands environmental exposure and extends product life. This meets rigorous utility industry standards, with products referenced in RUS listings for guy plates.
How many strain plates are needed per pole and how are they installed?
Typically, 2 to 4 strain plates are required per pole, depending on the pole diameter. Each corner of the plate has 3/16 inch diameter nail holes for secure attachment to the wood pole using nails.
What dimensions are available for strain plates?
Strain plates are available in various dimensions to accommodate diverse application needs, such as 6 inches wide by 7 inches long by 13 gauge thick with a 4-1/2 inch radius, or 4 inches wide by 8 inches long by 14 gauge with a 5 inch radius.
What certifications do your strain plates have?
Our strain plates are hot-dip galvanized to meet ASTM A153 and may be RUS listed and Buy America Compliant, adhering to industry standards.
What is the standard packaging for strain plates?
Standard packaging varies by model; for example, some strain plates come in packs of 100 with a carton weight of approximately 83 pounds, or in pallet quantities of 3200.
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