Heat Treated One Way Lag Screw 5/16" x 4"

Use for safes, security gates, public restroom fixtures/enclosures, and other applications that call for greater security Heat-treated and hardened to prevent breaking or snapping Slotted drive for simple installation with a standard slotted screwdriver Use in pre-drilled hole to prevent snapping Contains 50 pieces, Weight: 6.25E-4 pounds, Manufacturer: The Hillman Group