IMSCREWS 3/8-16 x 2-3/4 Carriage Bolts, 304 Stainless Steel (18-8), Heavy-Duty Structural Fasteners, 20 PCS

Structural Shear Resistance: Engineered with a 3/8 diameter to handle high-stress timber joints in decks and docks where standard bolts fail. The 2.75 Precision Span: Designed to penetrate 1.5 lumber plus thick steel brackets, leaving the Designed for amount of thread for a secure nut seat. Weather-Resistant 304 SS: Forged from 18-8 (304) stainless steel, offering high resistance to rust in coastal air and with treated lumber. Tamper-Proof Safety Head: The drive-free round head offers a smooth, professional finish that prevents snagging and unauthorized removal. Biting Square Neck: The anti-spin square shoulder locks into wood fibers for easy, one-sided tightening—no second wrench required.

IMSCREWS 3/8"-16 x 2-3/4" Heavy-Duty 304 Stainless Steel Carriage Bolts (20 PCS)

Substantial Strength for Heavy Structural and Marine Connections
The IMSCREWS 3/8" x 2-3/4" carriage bolt is engineered for structural projects requiring significant load-bearing capacity and professional durability. With a robust 3/8-inch diameter and a precise 2.75-inch length, these bolts are the ideal choice for securing industrial brackets, dock hardware, and heavy timber-to-metal connections. The length is perfectly suited for passing through 1.5-inch actual thickness lumber while leaving sufficient thread for heavy-duty washers and nuts to ensure a snug, permanent connection. Built for longevity, they offer the structural stability required for outdoor pergolas, heavy fencing, and commercial-grade timber framing.

Superior Durability and Safety-Focused Design
Forged from premium 18-8 (304) stainless steel, these fasteners offer superior resistance to rust and corrosion in coastal or humid environments. The smooth round head creates a clean, tamper-resistant look that reduces snagging hazards, making them a safe choice for high-traffic areas like boardwalks, playground sets, and residential decks. The integrated square neck locks the bolt into place during installation, preventing spinning and allowing for easy, one-sided tightening from the nut side with a single wrench.

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

Pro-Tips:
1. Use a 3/8" drill bit to ensure a snug, structural fit for the square neck.
2. Pair with 304 SS flat washers and hex nuts to distribute heavy structural loads and protect wood fibers.