GRK 10221 UberGrade Rugged Structural Screw, 5/16" x 3-1/8", 500-Count BF15 3/4" x 400'

3/4" x 400'

Not for overhead use

Operating temperature: 32 to 140F (0 to 60C)

5" 5 hole Hook & Loop Pad

Faces are replaceable durable plastic that won’t mar finely finished surfaces

GRK 10221 UberGrade Rugged Structural Screw, 5/16" x 3-1/8", 500-Count BF15 3/4" x 400'GRK's RSS Rugged Structural Screw is made of specially hardened steel to provide you with high tensile, torque and shear strength. The sharp threads and points bite instantly into the material (including hardwood), reducing the splitting effect due to smaller shanks. RSS screws which are 3 1 8" and longer have a six threaded CEE thread that enlarges the screw hole for the non threaded portion of the fastener, allowing the wood to settle easily and