Assy Ecofast Screw - 5/16X 8 75/BX

Ecofast Wood Screw: Self-Countersinking ASSY-Screw. Allows for faster driving while still providing a 40% stronger hold! High quality case hardened construction strongly deters head damage. The Patented AW Drive System combines all the advantages of Phillips, Square, Torx", & Pozi Drive Bits. Best torque transfer due to the number of contact points. Easy to insert AND extract. Self- Centering of the bit in the screw head allows accurate screw placement. No Come Out Drive prevents damage to screw head, enables easier driving into tough materials.