5/16-18 x 4 Six Lobe Flat Floor Board Screw Type F Black Phosphate KPOHC they are suitable for both

they are suitable for both indoor and outdoor use

such as in marine environments or outdoor settings

Its zinc yellow coating offers corrosion resistance

Introducing the M10-1

The 3/8-24 NE Nylon Insert Hex Lock Nut Zinc is a type of nut that is used to secure bolts and screws in place

5/16-18 x 4 Six Lobe Flat Floor Board Screw Type F Black Phosphate KPOHC they are suitable for both5 16 18 x 4 Six Lobe Flat Floor Board Screw Type F Black Phosphate Size: 5 16 18 x 4 inches Material: Steel Finish: Black Phosphate Head Type: Six Lobe Flat Floor Board Drive Type: Type F Features: Six lobe drive head for increased torque and reduced cam out Flat floor board head for a flush finish Black phosphate finish for corrosion resistance Ideal for use in flooring, decking, and other wood to wood applications