5/16-18 x 2 MS51959, NASM51959 Phil Flat Machine Screw Full Thread 300 Series S/S DFAR D7500CY It features a hex washer

It features a hex washer head with an indent

These 18-8 stainless steel fender washers are designed to evenly distribute the load of a bolt or screw over a wider surface area

It is designed to prevent loosening of nuts and bolts due to vibration or other factors

**10-24 x 1 1/4 Thumb Screw Plain Fully Thread Zinc**

98 x 5 Metric Phillips Pan Head PT Alternative Fully Threaded Zinc & Bake is a type of screw that is used in a variety of applications

5/16-18 x 2 MS51959, NASM51959 Phil Flat Machine Screw Full Thread 300 Series S/S DFAR D7500CY It features a hex washerThe 5 16 18 x 2 MS51959, NASM51959 Phil Flat Machine Screw Full Thread 300 Series S S DFAR is a high quality fastener designed for use in demanding applications. It is manufactured from 300 series stainless steel, which provides excellent corrosion resistance and strength. The full thread design allows for maximum holding power, while the Phil flat head provides a flush, low profile finish. This screw meets the requirements of MS51959 and NASM51959