"IMSCREWS 3/8"" x 1-1/4"" Professional Fully Threaded Heavy-Duty Lag Screws - 304 Stainless Steel (10 PCS Pack)
High-Strength Anchoring for Compact Structural Nodes
When you need massive holding power in limited depths—such as mounting heavy-duty casters, gate hinges, or steel brackets to 2x lumber—the IMSCREWS 3/8 x 1-1/4 inch Lag Screw is the engineered choice. This compact ""powerhouse"" combines a thick 3/8-inch diameter with a fully threaded profile for maximum grip where space is tight.

The Advantage of Full Threading
In shorter fasteners, every millimeter of grip counts. Our fully threaded design provides 100% thread engagement from the tip to the base of the hex head. This ensures superior pull-out resistance and ensures the screw remains rock-solid in the wood, making it ideal for high-vibration applications like moving carts or heavy doors.

Uncompromising 304 (18-8) Stainless Defense
Forged from premium 304 Stainless Steel, these screws offer a permanent shield against rust and environmental corrosion. They are chemically immune to ACQ pressure-treated lumber, ensuring your outdoor fixtures remain secure and free from ""rust streaks"" for decades.

INSTALLATION & TECHNICAL FAQ
¡ñ Why choose 3/8"" diameter for a short screw? It provides extreme shear resistance for heavy loads that thinner screws simply cannot handle.
¡ñ What tools are needed? Fits a standard 9/16"" hex socket. Pre-drilling is recommended: use a 1/4"" bit for softwoods or a 9/32"" bit for hardwoods.
Product Specifications:
- Size: 3/8"" x 1-1/4""
- Thread Type: Fully Threaded (Maximum Grip)
- Material: Premium 304 (18-8) Stainless Steel
- Drive: External Hex (9/16"" Socket Size)"

Key Features

• [Full-Thread Grip] Featuring a fully threaded design, these bolts ensure extensive engagement with wood fibers. They offer strong pull-out resistance for shallow-depth anchoring.
• [HEAVY-DUTY SHEAR STRENGTH] The 3/8-inch diameter offers high shear resistance for mounting steel connectors, joist hangers, and deck post bases. A reliable alternative to standard wood screws for critical hardware attachments.
• [304 STAINLESS WEATHER PROTECTION] Manufactured from 304 (18-8) stainless steel for outdoor use. Compatible with ACQ pressure-treated lumber and resistant to oxidation in high-moisture garden or coastal environments.
• [HARDWARE MOUNTING SPECIALIST] The 1-1/4 inch length is dimensioned for securing thick metal brackets to wooden posts without over-penetrating the structure. Suitable for dock hardware, gate latches, and heavy-duty hinges.
• [INSTALLATION SPECIFICATIONS] Drive with a 9/16" hex socket. To prevent timber splitting and ensure thread integrity, pre-drilling a pilot hole (1/4" for softwoods, 9/32" for hardwoods) is required.

Specifications

• ASIN: B0F21C1K23
• Internal SKU: IMS0661
• Size: 3/8" x 1-1/4"
• Material: Stainless Steel
• Finish: Stainless Steel
• Head Style: Hex
• Package Quantity: 10