Jake Sales 5/16 in x 14 in Construction Lag Screw - Heavy Duty

In this review the Jake Sales 5/16 in x 14 in construction lag screw is examined for builders and serious DIYers who need durable, corrosion-resistant fasteners for outdoor structural work. The single biggest reason to buy is its combination of a Type 17 notched point for quick starts and a triple-coated, heat-treated steel body that passed a 1200 hour salt spray test, giving confidence when fastening ACQ-treated lumber or building long-lasting decks and structures.

Key Features

• Type 17 Notched Point: The extra sharp point starts quickly and reduces walking, which makes driving into timber faster and often removes the need for pre-drilling.
• Triple Coated Finish: The heavy coating provides strong corrosion resistance so fasteners remain secure in outdoor and ACQ-treated lumber applications.
• Heat Treated Steel: Manufactured from high quality heat treated steel to deliver superior shear and compression strength compared with standard lag bolts.
• Large Head Diameter: The 11/16 in head diameter combined with a modified truss washer head design helps distribute load and pull-down force on wood members.
• Long 14 in Length: With a 14 in length and ~5/16 in thread diameter, these screws reach deep into structural members for strong connections in deck posts, beams, and heavy framing.

Who It's For

These lag screws are aimed at professional contractors, deck builders, and serious DIYers who regularly work with heavy timber, 4x6 posts, and pressure treated lumber where long-lasting, high-strength fasteners are essential. The product suits projects that require deep penetration and strong shear/compression resistance, such as ledger attachments and heavy framing.

If you only need small interior screws or short fasteners for light carpentry, these heavy 14 in lag screws are overkill; choose shorter or lighter fasteners for trim and non-structural tasks where the extra length and strength are unnecessary.

Pros & Cons

Pros

• Exceptional corrosion resistance confirmed by a 1200 hour salt spray test, making them reliable for outdoor builds.
• Type 17 notched point reduces pre-drilling and speeds installation with less walking.
• High quality heat treated steel provides superior strength for shear and compression loads on structural connections.
• Customers report strong pull-down performance, able to tightly secure 4x6 lumber.

Cons

• At 14 in length these are specialized for heavy structural work and are not practical for light carpentry or finishing tasks.
• The larger head and triple coating can make them more expensive than standard lag bolts, though buyers note good long-term value.

Specifications

Thread Diameter	~5/16 in
Head Diameter	11/16 in
Length	14 in
Material	Heat treated steel
Drive Type	Torx/Star drive
Point Type	Type 17 notched extra sharp point
Coating	Triple coated, passed 1200 hour salt spray test

Our Verdict

The Jake Sales 5/16 in x 14 in lag screw is a robust choice for anyone building decks, heavy frames, or working with ACQ-treated lumber; its Type 17 point and triple coating deliver reliable installation and long-term corrosion resistance, making it a cost-effective option for structural fastening where strength and durability matter.

Frequently Asked Questions

Do these screws require pre-drilling?
The Type 17 notched point reduces the need for pre-drilling in many timbers, though pre-drilling may still be wise for very dense hardwoods or to ensure precise alignment.

Are these compatible with pressure treated lumber?
Yes, the triple coated finish is specified as ACQ treated lumber compatible and the screws passed a 1200 hour salt spray test for corrosion resistance.

What drive is used to install them?
They use a Torx/Star drive which provides good bit engagement and lowers the chance of cam-out during installation.