IMSCREWS 3/8"-16 x 2-1/4" Heavy-Duty 304 Stainless Steel Carriage Bolts (5 PCS)

Substantial Support for Structural Timber Connections
The IMSCREWS 3/8" x 2-1/4" carriage bolt is designed for projects requiring reliable shear resistance and stable structural support. With a 2.25-inch length, these bolts are well-suited for high-load joints, such as joining two 1-inch thick boards or reinforcing deck-to-post connections. Built for framing, they offer the stability necessary for long-term use in gazebos, pergolas, and industrial garden structures.

High Durability and Safety-Focused Design
Forged from 18-8 (304) stainless steel, these fasteners are highly resistant to corrosion in outdoor environments and are compatible with pressure-treated lumber. The smooth round head offers a clean appearance that reduces snagging hazards, making them an ideal choice for railings, play sets, and benches. The integrated square neck prevents the bolt from spinning, allowing for easy, one-sided installation with a single wrench from the nut side.

Specifications:
- Thread: 3/8"-16 Coarse; Length: 2-1/4" (Under Head)
- Material: 304 (18-8) Stainless Steel; Full Thread

FAQ:
Q: Drill bit size? A: A 3/8" bit provides a snug, structural fit.
Q: Coastal safe? A: Yes, 304 SS offers high resistance to salt air corrosion.

Pro-Tips:
1. Ensure the pilot hole is perfectly perpendicular to the wood surface to avoid alignment issues.
2. Pair with a heavy-duty flat washer on the nut side to distribute load and protect wood fibers.

Key Features

• PREMIUM 304 STAINLESS STEEL Crafted from high-quality 18-8 (304) stainless steel, these carriage bolts provide exceptional rust and corrosion resistance. Well-suited for outdoor projects, ensuring your structures stay safe without unsightly rust stains on wood.
• ADJUSTABLE FULL THREAD DESIGN The 2-1/4 length combined with a full thread design offers maximum versatility. It allows for secure fastening across various material thicknesses, ensuring the nut can be tightened even on thinner board combinations.
• SELF-LOCKING SQUARE NECK Features a smooth rounded mushroom head and a precision square neck that bites into wood to prevent spinning. This self-locking mechanism allows for easy one-sided tightening during installation.
• IDEAL FOR HEAVY-DUTY PROJECTS With a robust 3/8 large diameter, these bolts offer massive shear strength. Well-suited for securing deck posts, garden gazebos, playground equipment, and heavy furniture repair.
• NOTE ON ACCESSORIES This package includes 5 pieces of 3/8-16 x 2-1/4 carriage bolts only. Nuts and washers are NOT included. We recommend pre-drilling a 3/8 hole and using manual tools for installation.

Specifications

• ASIN: B0F2F684M1
• Internal SKU: IMS0846
• Size: 3/8"-16 x 2-1/4"
• Material: Stainless Steel
• Finish: Stainless Steel
• Head Style: Round
• Package Quantity: 5