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IMSCREWS

IMSCREWS 5/16 x 1-1/4 Hex Head Lag Screws, 304 Stainless Steel 18-8, Fully Threaded, Pack of 5 - Heavy Duty Wood Screws

IMSCREWS 5/16 x 1-1/4 Hex Head Lag Screws, 304 Stainless Steel 18-8, Fully Threaded, Pack of 5 - Heavy Duty Wood Screws

Regular price $5.99
Regular price Sale price $5.99
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Product Specifications

Fastener Type
Lag Screws
Diameter / Thread Size
5/16
Material
304 Stainless Steel
Head Style
Hex Head
Application
Woodworking

Confirm every listed dimension and the intended application before ordering.

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"IMSCREWS 5/16 x 1-1/4 Heavy-Duty Lag Screws - 304 Stainless Steel (5 pcs)

Superior Shear Strength for Daily Hardware
Upgrade your fastening with the 5/16 industrial diameter. These bolts provide significantly higher lateral stability than standard 1/4 screws. Perfectly sized at 1.25 inches for securing heavy gate latches, steel brackets, or wall mounts to standard 2x lumber without piercing the other side.

Fully Threaded for Maximum Grip
Features a fully threaded design to ensure total engagement from the tip to the hex head. This maximizes surface area contact in medium depths, providing elite pull-out resistance and immediate structural bite in both softwoods and hardwoods.

304 Stainless Exterior Defense
Forged from premium 18-8 (304) stainless steel for professional-grade rust protection. compatible with ACQ pressure-treated lumber. Prevents unsightly rust streaks on high-value cedar, redwood, or outdoor structural projects.

FAQ
• Tools: Fits a standard 1/2 hex socket or wrench.
• Pre-drilling: Recommended. Use a 3/16 bit for softwoods or 7/32 bit for hardwoods to prevent timber splitting.
• Why 1-1/4 length? Ideal for maximizing thread engagement in 1.5 thick boards (like 2x4s) while maintaining a clean, flush finish.

Specs:
- Size: 5/16 x 1-1/4
- Thread: Fully Threaded (Max Grip)
- Material: 304 Stainless Steel
- Drive: 1/2 Hex Head
- Qty: 5 pcs"

Key Features

  • Versatile Mounting Strength: The 5/16 diameter offers a balance of shear strength and adaptability. At 1.25 inches long, these screws are ideal for mounting hardware to 2x boards without the tip protruding.
  • 304 Stainless Steel: Made from premium 18-8 (304) Stainless Steel, providing effective protection against rust and corrosion. Compatible with ACQ pressure-treated lumber for outdoor or humid environments.
  • Full Thread Maximum Grip: Featuring a fully threaded design, these bolts ensure extensive engagement with wood fibers. This provides reliable pull-out resistance for brackets and exterior fixtures.
  • Outdoor Wood Protection: These fasteners help maintain the appearance of cedar and redwood by reducing the likelihood of rust staining common with standard zinc-plated hardware.
  • Professional Installation: Designed for use with a standard 1/2 hex socket. To prevent wood splitting, pre-drilling a pilot hole (recommended 5/32 for softwoods or 7/32 for hardwoods) is required.

Specifications

  • ASIN: B0F21D1CJQ
  • Internal SKU: IMS0630
  • Size: 5/16" x 1-1/4"
  • Material: Stainless Steel
  • Finish: Stainless Steel
  • Head Style: Hex
  • Package Quantity: 5
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  • Confirm the Fit

    Check thread size, length, head style and drive type before ordering.

  • Choose the Material

    Select stainless, alloy or coated steel based on the environment and application.

  • Install Correctly

    Use the matching driver and pilot-hole guidance for a secure installation.

  • Need Help?

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