Military Standard Machine Screw
- Cruciform recess
- 100° Flat countersunk head
- Fine threads
- Drive: Philips
- Thread class: 3A
- Material: Alloy steel
- Finish: Cadmium plated
- Threads per inch (TPI): 28
- Tensile strength: 4550 lbf
- Industry standard specification: AIA/NAS NASMS24694