Finding reliable 5/16 inch thick steel plates for construction, welding, or mounting can be challenging. The selections below focus on hot-rolled A36 steel and plain-milled mill finish plates with precise hole patterns for easy installation. Each product offers strong load bearing, good weldability, and consistent dimensions to support a variety of projects from boards to industrial structures. The list includes single and multi-pack options to fit different workloads and budgets.
Summary Table
| Product | Size (in) | Material | Holes | Quantity |
|---|---|---|---|---|
| Rocaris 1 Pcs 8 X 8 X 5/16 | 8 x 8 x 5/16 | A36 Hot-Rolled | 4 | 1 |
| eoere 2 PCS 12″ x 4″ | 12 x 4 x 5/16 | Carbon Steel | — | 2 |
| Weldable 12 x 12 Inch 5/16 | 12 x 12 x 5/16 | A36 Mild | — | 1 |
| Rocaris 2 Pcs 8 X 8 X 5/16 | 8 x 8 x 5/16 | A36 Hot-Rolled | 4 | 2 |
| eoere 6″ x 6″ 5/16 | 6 x 6 x 5/16 | Hot Rolled Carbon | — | 2 |
Rocaris 8 x 8 x 5/16 Inch A36 Plate
This hot-rolled A36 steel plate provides strong load-bearing capacity with smooth edges and rounded corners for secure fixing. The 8 x 8 inch footprint suits mounting on boards, concrete, or structural supports, delivering stable performance under vibration and heavy use. The 5/16 inch thickness supports welding, machining, and painting workflows, and the plate is designed to stay durable across long-term installations. Four pre-drilled holes enable straightforward alignment and secure fastening to various surfaces.
eoere 12″ x 4″ Hot Rolled Plate
Measuring 12 by 4 inches and 5/16 inch thick, this carbon steel plate is ready for welding and machining. The plain finish preserves a neutral base for coating or treatment. With a high load capacity of up to 660 pounds, it suits backing spacers, base plates, or structural supports in light-to-moderate duty applications. Its straightforward dimensions support quick fabrication and predictable performance for DIY or professional projects.
Weldable 12 x 12 Inch 5/16 Plate Mill Finish
This pack features a full-size 12 by 12 inch A36 mild steel plate at 5/16 inch thickness. It ships with a mill finish suitable for welding, grinding, and coating, making it a versatile option for construction boards, structure supports, or industrial fixtures. The uniform thickness and dimensions support consistent fit across multiple installation points, aiding stable assembly in larger projects.
Rocaris 2 Pcs 8 x 8 x 5/16 Inch Plates
Two 8 by 8 inch plates at 5/16 inch thickness provide extra versatility for double-leg mounts, paired supports, or additional backing in larger assemblies. Made from A36 hot-rolled steel, these plates are designed for durability and reliable joining. Their four pre-drilled holes simplify securing to brick, concrete, or metal frameworks and help maintain precise alignment during installation.
eoere 6″ x 6″ 5/16″ Hot Rolled Plate
This 6 by 6 inch square plate in 5/16 inch thickness is ideal as a backing base or mounting plate for compact installations. Its hot-rolled finish provides robust strength while maintaining a straightforward, pre-drilled-ready option when applicable. The plate can be integrated into small equipment frames or used as a support pad in assemblies where space is at a premium.
Buying Guide: Key Considerations For 5/16 Inch Steel Plates
- Material quality: Look for A36 hot-rolled steel for durability, weldability, and predictable behavior under load. Consider plain finish options if coatings will be added later.
- Size and hole pattern: Match plate dimensions to your project footprint. Pre-drilled holes simplify mounting and alignment; verify hole size and spacing for compatible fasteners.
- Thickness balance: A 5/16 inch thickness offers good strength-to-weight for many structural and repair tasks, while still remaining workable for cutting and welding.
- Finish and coating: Mill finish plates accept paints and primers readily; bare hot-rolled plates may require surface prep for corrosion resistance in exposed environments.
- Quantity and cost per unit: Consider whether you need single plates or multi-packs for bulk projects to optimize cost and reduce procurement time.
- Application environment: For construction boards, supports, and industrial fixtures, ensure the plate’s dimensions and hole placements align with mounting suraces and load requirements.
- Machinability: If precise machining or stamping is required, verify tolerances and machining recommendations from manufacturer specifications or data sheets.
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