| Make | Knu-Vise |
|---|---|
| Model | Vintage P-400-1 Welding Aviation Aircraft |
| Condition | Used |
| Location | Salisbury, MD , US |
| Date Listed | Aug 11, 2026 |
| Expires | Sep 10, 2026 |
Description
Vintage special-purpose squeeze-action clamp / fixture tool , marked 31M890352-1 . Heavy compound-action construction with long bronze-colored linkage members and specially formed opposed fixture jaws, indicating a tool designed for a particular installation, clamping, holding, or assembly operation.
Individual linkage components are separately stamped 99431 and 99433 ; these appear to be component markings rather than the primary tool number. Exact manufacturer, aircraft application, and intended maintenance procedure have not been confirmed. Believed to be specialized aviation maintenance tooling based on its construction and source context.
A distinctive, heavily built vintage specialty tool suitable for aviation maintenance-tool collections, restoration reference, or identification by a knowledgeable shop or collector.
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