5/16 in. x 4 in. Star Drive Round Head Rugged Structural Wood Screw (45-Piece per-Pack)

GRK’s RSS screw is made out of Climate coated and hardened steel. Its sharp threads and point bite instantly into material (including hardwood), reducing the splitting effect caused by smaller shanks. Its washer type head has no sharp edges like conventional lag screws and the added shoulder underneath the washer has the ability to center the RSS screw in predrilled hardware.”,”highlights”:[“Easy to install lag screw alternative”,”Integrated washer head allows for maximum clamping force”,”For interior / exterior use”

Drive Style:Torx

Fastener Color:Brass

Fastener Material:Carbon Steel

Fastener Plating:Zinc

Fastener Type:Lag Screws

Features:ACQ Rated,Self Tapping

Head Style:Round Head

Included:Driver Bit

Interior/Exterior:Exterior,Interior

Materials Fastened:Wood to Wood

Measurement Standard:SAE

Package Quantity:45

Product Weight (lb.):.043 lb

Returnable:90-Day

Thread Style:W-Cut

Manufacturer Warranty:No

Screw Length:4 in

Size:5/16 in

Thread Pitch (mm):3.5 mm

Threads Per Inch (TPI):7.2