SG TZH 1/2" x 6" Hex Head Lag Screws 20-Pack — 304 Stainless Steel, Partial Thread for Heavy-Duty Wood

These are 1/2" x 6" hex-head lag screws made from 304 (18-8) stainless steel, sold in a 20-piece pack for heavy-duty wood and exterior fastening tasks.

Designed for demanding carpentry and outdoor projects, SG TZH's lag screws combine corrosion-resistant 18-8 (304) stainless steel with a partial-thread profile and hexagon head for strong mechanical hold and easy installation with a wrench or socket. Their longer 6" length and robust 1/2" diameter provide deep bite into thick timbers, posts, and structural lumber where strength and longevity matter.

How do these lag screws perform in outdoor and marine conditions?

Made from 304 stainless steel (18-8), these lag screws resist rust and staining better than standard steel fasteners, making them suited for exterior use. They won’t corrode quickly when exposed to rain, humidity, or treated wood, though 316 stainless is preferred for severe saltwater exposure.

• Material: 304 (18-8) stainless steel for good corrosion resistance
• Thread type: partial thread for clamping strength and shear support
• Head: hexagon head allows high torque with socket or wrench
• Best use: decks, pergolas, fence posts, structural lumber in typical outdoor settings

What size and fit should I expect for 1/2" x 6" lag screws?

Each screw measures 1/2" in diameter and 6" overall length, with a wrench size of 3/4" for the hex head. The partial-thread design leaves a smooth shank portion to draw wood members together while the threaded tip bites into the receiving timber for a secure hold.

• Diameter: 1/2" (0.5") for heavy-load applications
• Length: 6" overall, suitable for thick timbers and double-lap joints
• Wrench/socket: 3/4" hex drive for power or manual installation
• Pack size: 20 pieces for project-ready quantities

How do I install these hex-head lag screws correctly and safely?

For best results, pre-drill a pilot hole sized to the screw’s minor diameter to prevent wood splitting and ensure proper seating. Use a socket or wrench on the 3/4" hex head, apply steady torque, and avoid over-tightening which can crush wood fibers or strip threads.

• Pre-drill pilot hole to the screw’s root diameter for hardwoods
• Use a 3/4" socket or wrench; power drivers with torque control work well
• Drive until the hex head seats flush; do not exceed recommended torque
• Consider washers where needed to distribute load on softer materials

Are these lag screws a reliable value for construction and DIY projects?

Offered in a 20-piece pack, SG TZH provides a balance of quality and quantity that fits both professional jobs and weekend builds. The combination of sturdy 304 stainless construction and precise hex-head machining makes them a dependable choice where long-lasting hardware is required.

• Quantity: 20 screws per pack for small to medium projects
• Durability: forged and machined for consistent strength and fit
• Usability: hex head resists slippage and allows higher torque
• Applications: structural connections, deck ledger bolts, post anchoring

Who is this for? These SG TZH 1/2" x 6" 304 stainless steel hex-head lag screws are aimed at carpenters, contractors, and serious DIYers who need durable, weather-resistant fasteners for structural woodwork, decks, pergolas, and outdoor fixtures. If you require heavy-duty timber connections with long-term corrosion resistance and easy wrench-driven installation, this 20-piece set provides an efficient, reliable solution.