3/8 In 16 Carriage Bolts, 2-1/2 In Long, Smooth Round Head With Square Shoulder, A307 Grade Zinc Plated Steel, 25 Pack, Durable Fasteners For Furniture, Rails, And Heavy Duty DIY Projects

3/8 x 2-1/2 in Zinc Carriage Bolts A307 for Furniture Projects
✔️ 25-pack; smooth round head with square shoulder; UNC-2A threads

These carriage bolts are designed for wood-to-wood or wood-to-metal assemblies, offering strong fastening for furniture, rails, decks, and heavy-duty DIY projects. The 25-pack keeps you stocked for multiple builds and repairs.

✅ Size: 3/8 in (9.5 mm) dia, 2-1/2 in (63.5 mm) long, 16 TPI
✅ Thread: UNC-2A coarse; blunt point
✅ Head: smooth rounded with square shoulder
✅ Material: zinc plated steel, A307 grade
✅ Use: wood-to-wood or wood-to-metal; requires nuts & washers

💡 What is a carriage bolt with a square neck used for?

Handy for wood-to-wood joinery and preventing bolt rotation during tightening. - wood-to-wood joinery for decks and outdoor furniture - prevents turning during installation with square shoulder - pairs with matching nuts and washers for strong load distribution - zinc-plated steel resists corrosion in outdoor settings