100 degree flat countersunk Phillips machine screw.
A machine screw with a 100 degree flat countersunk head and cross (Phillips type) recess, UNC-2A or UNF-2A threads. The C code is passivated corrosion resistant steel, S is cadmium plated steel and BB is brass; the dash number sets thread and length.
| Where it's used | Flush fastening of panels, brackets and access covers. |
| Spec status | NASM24693 (supersedes MS24693, 2000). |
A sample of what we've quoted and shipped under this spec. If your dash number isn't here, send it anyway. Every order ships with a Certificate of Conformance and lot records.
Need MS24693 parts quoted?Send the part numbers and quantities. We usually quote within two business days.
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