IMSCREWS 1/2"-13 x 4-1/2" Heavy-Duty 304 Stainless Steel Carriage Bolts (5 PCS)

Substantial Support for Deep Structural Connections
The IMSCREWS 1/2" x 4-1/2" carriage bolt is engineered for heavy-duty projects requiring extended reach and maximum structural support. With a robust 1/2-inch diameter and a 4.5-inch length, these bolts are well-suited for high-load joints, such as joining triple-layered 2x lumber or through-bolting 4x4 posts for deck railings and beams. Built for heavy framing, they offer the stability necessary for long-term use in docks, retaining walls, 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 high-traffic areas like benches, playgrounds, and railings. The integrated square neck prevents rotation, allowing for easy, one-sided installation with a single wrench from the nut side.

Specifications:
- Thread: 1/2"-13 Coarse; Length: 4-1/2" (Under Head)
- Material: 304 (18-8) Stainless Steel; Full Thread

FAQ:
Q: Drill bit size? A: A 1/2" 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 for 4.5" bolts to avoid alignment issues in thick timber.
2. Pair with a heavy-duty flat washer on the nut side to distribute structural load and protect wood fibers.

Key Features

• PREMIUM 304 STAINLESS STEEL Crafted from high-quality 18-8 (304) stainless steel, these bolts offer superior rust and corrosion resistance. Well-suited for long-term outdoor, garden, and marine structural applications.
• INDUSTRIAL STRENGTH 1/2 DIAMETER With a robust 1/2 inch large diameter, these bolts provide massive shear strength and loading capacity. Engineered for structural projects where safety and stability are paramount.
• VERSATILE FULL THREAD DESIGN The 4-1/2 length features a full thread design, providing maximum flexibility for various material thicknesses. It ensures a secure, tight fit whether joining thick beams or layered timber.
• SELF-LOCKING SQUARE NECK Features a smooth rounded mushroom head and a precision square neck that bites into wood to prevent spinning. This allows for easy one-sided tightening during installation.
• SPECIFICATIONS & NOTE Package includes 5 pieces of 1/2-13 x 4-1/2 carriage bolts only. Nuts and washers are NOT included. We recommend pre-drilling a 1/2 hole for a professional fit.

Specifications

• ASIN: B0F2F6WCD7
• Internal SKU: IMS0908
• Size: 1/2"-13 x 4-1/2"
• Material: Stainless Steel
• Finish: Stainless Steel
• Head Style: Round
• Package Quantity: 5