21 Screws per Order HandyPak 5/16 by 4-Inch Structural Screws GRK ICC-ESR-244

GRK 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 screw which is 3-1/8″ and longer have CEE thread that enlarges the screw hole for the non-threaded portion of the fastener, allowing the wood to settle easily and increasing the screw’s drawing strength. The CEE thread also reduces the friction on the screw shank which can result in lowering the driving torque and the likelihood of splitting the wood. This is why the RSS screw is an efficient lag screw alternative.

21 count PER ORDERSize: 5/16″ x 4″Recessed Star Drive zero stripping, with 6 points of contactCEE Thread for a clean finished lookW-Cut: Low torque, smoother driveZIP-TIP: No pre-drilling faster penetrationWasher Head for immense holding powerUses T-30 star bitCutting Pockets provide a clean hole and reduces splitting, and bore with precisionESR-3201 Approved for structural applicationCase Hardened Steel for high tensile, torque and shear strengthClimatek Coated AC257 approved for use in treated lumberFor interior/exterior use in carrying beams, ledger boards, stair rails, deck posts, playground equipment and other professional applications.

Specifications

Screw size: 5/16″Length under head: 4″Thread type: CEE
Finish: Climatek coatingDrive size: T-30.