Military Standard Machine Screw
- Pan head
- Cruciform recess
- Drive: Philips
- Fine threads
- Material: Alloy steel
- Finish: Cadmium plated
- Thread class: 3A
- Threads per inch (TPI): 28
- Tensile strength: 4550 lbf
- Maximum shear load: 7360 lbf
- Industry standard certification: AIA/NAS NASMS27039