5/16-18x2-1/4" Star Drive Flat Head Trailer Floorboard Deck Scews Phos & Oil

Part Number: 31C225SFBP
Diameter/Pitch: 5/16"-18
Length: 2-1/4"
Grade: Case Hardened Steel
Finish: Phosphate & Oil
Coarse / Fine Threads: Coarse
Partial / Full Threads: Full
Point Type : Type F - Thread Cutting