5/16 In x 3 In Galvanized Lag Screws Kit Grade A307 With 100 Count 5/16 In USS Flat Washers, Hot Dip Galvanized For Exterior Use, Partially Threaded, Heavy Duty Outdoor Fasteners Set

Heavy-Duty Galvanized Lag Screws Kit with 100 Washers
✔️ 5/16 in dia x 3 in long, 2 in threaded, 1/2 in drive

These heavy-duty lag screws are designed for exterior wood projects. The kit includes 100 lag screws and 100 USS flat washers, hot-dip galvanized for superior corrosion resistance in outdoor environments. Ideal for decks, fences, pergolas, and other outdoor framing tasks.

✅ Diameter: 5/16 in (7.94 mm); length 3 in (76.2 mm)
✅ Threaded portion: 2 in (50.8 mm) for strong grip
✅ Drive: external hex fits 1/2 in sockets
✅ Coating: hot-dip galvanized per ASTM A153/A153M
✅ Material: steel, ASTM A307 Grade A
✅ Kit contents: 100 lag screws and 100 USS flat washers
✅ Coating min thickness: 0.0017 in (0.043 mm)

💡 What is a heavy-duty galvanized lag screw used for in outdoor decks and wood projects?

- Handy for securing thick lumber in decks, pergolas, and outdoor framing - The galvanized coating resists moisture and corrosion in coastal or damp areas - External hex drive allows easy driving with typical tools - 2 in threaded portion provides strong pull-out in hardwoods