1/4-20 x 3/4 Six Lobe Flat Floor Board Screw Type F Black Phosphate NHB This castle nut is commonly

This castle nut is commonly used in automotive

The 1/4-20 x 3 Phillips Flat Undercut Full Thread Self Drill Screw Machine Screw is a versatile and durable screw designed for various applications

They feature a combination slot and Phillips drive head for easy installation

The 10-24 x 3/4 6-Lobe Pan Machine Screw is a fully threaded screw made of 18-8 stainless steel with a black oxide and oil finish

1/4-20 x 3/4 Six Lobe Flat Floor Board Screw Type F Black Phosphate NHB This castle nut is commonlyThe 1 4 20 x 3 4 Six Lobe Flat Floor Board Screw Type F Black Phosphate is a versatile and durable screw designed for securing floorboards in various applications. It features a 1 4 inch diameter and a 3 4 inch length, providing ample holding power. The six lobe drive design offers a secure grip, preventing cam out during installation. The flat head sits flush with the surface, creating a clean and professional finish. The black phosphate coating