IMSCREWS 5/16"-18 x 2-1/2" Heavy-Duty 304 Stainless Steel Carriage Bolts (10 PCS)

Substantial Strength for Heavy Structural Wood Connections
The IMSCREWS 5/16" x 2-1/2" carriage bolt is engineered for structural projects requiring reliable shear resistance and a professional finish. With a robust 5/16-inch diameter and a precision 2.5-inch length, these bolts are the ideal choice for securing deck railings, fencing main-posts, and children's play sets. The full thread design ensures maximum versatility, providing a snug and secure connection across different material combinations. Built for durability, they offer the stability required for long-term use in demanding residential and DIY applications.

High Durability and Safety-Focused Design
Forged from premium 18-8 (304) stainless steel, these fasteners are highly resistant to rust and corrosion in coastal or humid environments. The smooth round head offers a clean, low-profile appearance that reduces snagging hazards, making them a safe choice for playground equipment, benches, and residential gates. The integrated square neck prevents the bolt from spinning during installation, allowing for easy, one-sided fastening with a single wrench from the nut side.

Specifications:
- Thread Size: 5/16"-18 Coarse (UNC); Length: 2-1/2" (Measured from Under Head)
- Material: 304 (18-8) Stainless Steel; Full Thread

Pro-Tips:
1. Use a 5/16" drill bit to ensure a snug, structural fit for the square neck.
2. Pair with stainless steel flat washers and hex nuts on the nut side to distribute structural load and protect wood fibers.

Key Features

• Extended 2.5-Inch Reach: Designed forly sized for through-bolting two layers of 2x4 timber (1.5 thickness) while providing enough clearance for heavy-duty metal brackets and nuts.
• Reinforced 5/16 Strength: The 5/16-inch diameter offers a significant upgrade in shear resistance over standard 1/4 bolts, ensuring structural stability for load-bearing joints.
• Weather-Shield 304 Stainless: Forged from premium 18-8 (304) stainless steel, providing exceptional rust protection in rain, humidity, and corrosive ACQ pressure-treated wood.
• Safety-First Snag-Free Head: The low-profile round head eliminates sharp protrusions, making it the safest choice for child-friendly play sets, picnic tables, and garden benches.
• Self-Locking Square Neck: The precision square shoulder bites firmly into wood fibers, locking the bolt so you can tighten the nut from the back with just one wrench.

Specifications

• ASIN: B0F2F48JGC
• Internal SKU: IMS0802
• Size: 5/16"-18 x 2-1/2"
• Material: Stainless Steel
• Finish: Stainless Steel
• Head Style: Round
• Package Quantity: 10