Lag Screws 8 in #14 x 8 50-PCS - Heavy Duty Structural Wood Screws

In this review of the 50-PCS 8 in lag screws, the bottom line is simple: these are built for heavy timber work where strength and corrosion resistance matter. A reviewer who needs reliable fastening for decks, log construction or large framing will appreciate that these screws are heat treated and designed to resist rust after a 1000 hour salt spray test. The included T30 star bit and washer head make installation neat, and the knurled, type 17 point helps reduce pre-drilling and effort on dense wood.

Key Features

• Dimension and strength: The 0.25 in thread diameter and 8 in length deliver deep embedment and hold for structural connections in large timbers.
• Heat treated steel: Heat treatment gives the screws increased shear and tensile strength for long-term load bearing uses.
• Anti-corrosion coatings: Double coatings that passed a 1000 hour salt spray test provide durable protection for exterior and harsh environment projects.
• Knurl thread and self-tapping point: The knurled shank lowers torque required while the type 17 notched point eases driving into wood without excessive splitting.
• Modified truss washer head and T30 drive: The washer head yields a flush, finished appearance and the star drive reduces cam-out during installation.
• Included T30 bit: The supplied bit means you can start work immediately without searching for the correct driver.

Who It's For

This pack is aimed at contractors, carpenters and serious DIYers working on outdoor structures such as decks, timber framing, laminated beams and pole barns where long screws and proven corrosion resistance are required. The 50-piece quantity suits medium to large projects or keeping spares on site.

Those who need very small quantities, specialized stainless steel fasteners for extremely corrosive marine environments, or fasteners with countersunk heads for concealed trim should consider other options. For typical exterior timber work, these lag screws balance strength and longevity well.

Pros & Cons

Pros

• High structural strength from heat treated steel provides confidence in load-bearing connections.
• Durable double anti-corrosion coating passed extended salt spray testing for outdoor use.
• Knurled shank and type 17 point reduce drilling effort and help protect timber integrity during installation.
• Washer head with T30 star drive gives a neat finish and reduces slipping while driving.

Cons

• Some users report mixed ease of use; larger timbers drive well but dense hardwoods may still require pilot holes or heavy-duty tools.

Specifications

Length	8 in
Thread Diameter	0.25 in
Head Diameter	0.55 in
Drive Type	T30 star drive (bit included)
Point Type	Type 17 notched extra sharp point
Coating	Double anti-corrosion coating, passed 1000 hour salt spray
Pack Count	50 pieces

Our Verdict

These 8 in, #14 lag screws offer a strong, corrosion resistant fastener option for outdoor and heavy timber projects. They are good value for builders who need reliable hold, a neat washer head finish and a supplied T30 bit, though very dense hardwoods may still benefit from pilot holes. Overall a solid choice for decks, beams and framing work.

Frequently Asked Questions

Do these lag screws resist rust?
Yes, they feature double coatings and passed a 1000 hour salt spray test for enhanced corrosion resistance.

Is a pilot hole required?
The knurled shank and type 17 point reduce the need for pre-drilling in many timbers, but very dense hardwoods may still require pilot holes or higher torque drivers.

What driver bit is needed?
They use a T30 star drive and the package includes a T30 bit so you can begin installation right away.