Bulk 5/16"-18 Grade A Hex Bolts (A307, Coarse Thread, Hot-Dipped Galvanized) Length:400 Qty - 5/16"-18 x 4-1/2" (PT) Pre-drilling the correct pilot hole

Pre-drilling the correct pilot hole size is crucial for preventing wood splitting and ensuring maximum holding power

Equip your projects with the strength and reliability of our Class 10 Metric Hex Cone Locknuts in Zinc CR+3 & Wax finish

Standards: Manufactured to DIN 7991 / ISO 10642 for true countersunk geometry

making these machine screws perfect for metal-to-metal or metal-to-wood connections where a secure

The wax coating provides lubrication for smoother installation

Bulk 5/16"-18 Grade A Hex Bolts (A307, Coarse Thread, Hot-Dipped Galvanized) Length:400 Qty - 5/16"-18 x 4-1/2" (PT) Pre-drilling the correct pilot holeBulk 5 16" 18 Grade A Hex Bolts (A307, Coarse Thread, Hot Dipped Galvanized) Heavy Duty Corrosion Resistant Fasteners for Industrial & Structural Use For high strength, corrosion resistant fastening, trust 5 16" 18 ASTM A307 Grade A Hex Bolts. Manufactured from low carbon steel with a Hot Dipped Galvanized (HDG) finish, these bolts provide enhanced durability and protection against rust and corrosion. Ideal for outdoor, marine, infrastructure, and