5/16-18 x 2 1/2 MS51959, NASM51959 Phil Flat Machine Screw Full Thread 300 Series S/S DFAR KHS The nut has a hexagonal

The nut has a hexagonal shape and is tightened using a wrench

The 1/2 x 6 Hex Lag Screw 18-8 Stainless Steel is a versatile and durable fastener designed for heavy-duty applications

these screws offer a convenient and reliable solution for your fastening needs

The coarse thread type 17 point effortlessly penetrates even the toughest materials

- **Undercut:** Yes

5/16-18 x 2 1/2 MS51959, NASM51959 Phil Flat Machine Screw Full Thread 300 Series S/S DFAR KHS The nut has a hexagonal**5 16 18 x 2 1 2 MS51959, NASM51959 Phil Flat Machine Screw, Full Thread, 300 Series S S, DFAR** This screw is a 5 16 18 x 2 1 2 inch, full thread, flat head machine screw made of 300 series stainless steel. It meets the specifications of MS51959 and NASM51959 and is compliant with the DFAR (Defense Federal Acquisition Regulation Supplement). The screw is designed for use in a variety of applications, including aerospace, automotive, and industrial.