Stainless Phillips pan head screw with captive lock and flat washers.
Pan head machine screw with a Phillips recess and a split helical lock washer plus flat washer pre-assembled on the shank (a SEMS screw). The C version is corrosion resistant steel.
| Where it's used | Fast assembly of panels and equipment where washers must not be lost. |
| Spec status | NAS1301 (AIA National Aerospace Standard). |
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 NAS1301 parts quoted?Send the part numbers and quantities. We usually quote within two business days.
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