5/16-18 x 4 Six Lobe Flat Floor Board Screw Type F Black Phosphate KPOHC The 3/8-24 NE Nylon Insert

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

The 3/8-24 x 1 1/2 Hex Cap Screw Grade 9 DFAR EcoGuard USA is a high-quality fastener designed for use in demanding applications

They have a trim head that sits flush with the drywall surface

this screw is an ideal choice for both indoor and outdoor projects

The screw is RoHS compliant

5/16-18 x 4 Six Lobe Flat Floor Board Screw Type F Black Phosphate KPOHC The 3/8-24 NE Nylon Insert5 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