5/16" x 4" Large Diameter Concrete Screw 25 Pack - Heavy Duty Concrete Anchors, Masonry Screws for Brick, Block, Wood & Framing - Zinc Plated Hex Screws
- Tired of Anchors That Fail Under Pressure? Our large-diameter concrete screws are engineered to tackle the toughest anchoring challenges. With a large 5/16-inch diameter and 4-inch length, each screw delivers enhanced load-bearing capacity and a secure grip in hard substrates. You can trust these concrete anchors for heavy-duty fixing applications.
- Install with Speed and Ease—No Special Tools or Extra Parts Needed. Save time and simplify every job. These Concrete Screws feature a one-piece, fully threaded design—no separate sleeves, no complex steps. Just drill, drive, and achieve full load capacity immediately, even in dense masonry.
- Built to Last in Tough Conditions. Made from galvanized carbon steel, these hex screws offer strong corrosion and oxidation resistance, making them ideal for both indoor and outdoor use—even in damp environments—for a reliable, long-term hold.
- Versatile for Almost Any Heavy-Duty Task. Whether you’re installing scaffolding, guardrails, wall brackets, or securing items to concrete, brick, or stone, these anchors provide a trusted solution for both home and industrial applications. Their corrosion-resistant coating ensures reliable performance indoors and out.
- Choose Your Exact Size and Quantity—No Waste, No Shortages. Available in diameters from 5/16” to 1/2” and lengths of 3”or 4”, packed in practical 25- or 50-piece sets. Match the right Concrete Anchors to your project scale—from quick repairs to full-scale construction—without overbuying or running short.
Estimated shipping
Select a product to estimate shipping.Need a reliable way to secure materials to concrete, brick, or wood? Our 5/16" x 4" Large Diameter Concrete Screws provide a robust and easy-to-use anchoring solution for a variety of projects. These heavy-duty screws are designed to deliver lasting strength and stability where you need it most.
Key Highlights
- Enhanced Load-Bearing Capacity: The large diameter and length provide superior grip and stability in hard materials.
- Simple Installation: No special tools or sleeves are required – just drill, drive, and secure.
- Corrosion Resistance: Galvanized carbon steel construction ensures durability and long-lasting performance in various conditions.
- Versatile Use: Suitable for securing wood, brick, block, and framing applications.
- One-Piece Design: Fully threaded for immediate full load capacity, eliminating the need for additional components.
Useful Facts
- Thread Size: 5/16"
- Fastener Size: 5/16" x 4"
- Pack Size: 25 Screws
- Material: Galvanized Carbon Steel
- Head Style: Hex
Good Fit For
- DIY Home Improvement Projects
- Construction and Building Trades
- Woodworking and Framing
- Securing Outdoor Structures
Product details






Specifications
| Main Specification | |
|---|---|
| Manufacturer | RVSurve |
| Unit Count | 25 Count |
| Exterior Finish | Zinc |
| Thread Coverage | Fully Threaded |
| Outside Diameter | 0.31 inches |
| Brand | RVSurve |
| Head Type | Hex |
| UPC | 719559914675 |
| Number of Items | 1 |
| Fastener Type | Concrete screws |
| Item Diameter | 0.31 Inches |
| Fastener Size | 5/16" x 4" |
| Thread Size | 5/16" |
| Colour | silver/metallic |
| Thread Type | 60° V-thread |
| Drive System | External Hex |
| Product information | |
|---|---|
| Set Name | RVSurve 5/16" x 4" Large Diameter Concrete Screw Set (25 Pack) |
| Technical Details | |
|---|---|
| Part Number | HMAMZJ0011-SNMS-5/16"x4"-25 |
| Material Type | galvanized_steel |
| Thread Style | Fully Threaded |
| Compatible groove diameter | 0.31 Inches |
| Style | |
|---|---|
| Finish Types | Zinc Plated |
| Others | |
|---|---|
| Product Type | Concrete Screws |
| Size Name | 5/16" x 4" - 25PACK |
| Screw Head Style | Hex |
| Screw Point Style | Type G Point |
| Tags | |
|---|---|
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