There are 3 drawings for part 21-9839 available in AirCorps Library

Manufacturer's Drawing

Boeing Aircraft Corporation,   B-17 Drawings - Late,   Page: --,   Revision: ac  

STOP ASSY. RETRACTING SCREW UPPER

Associated Aircraft:   B-17  

Manufacturer's Drawing

Boeing Aircraft Corporation,   B-17 Drawings - Late,   Page: 1,   Revision: aa  

STOP ASSY. RETRACTING SCREW UPPER

Associated Aircraft:   B-17  

Manufacturer's Drawing

Boeing Aircraft Corporation,   B-17 Drawings - Late,   Page: 2,   Revision: aa  

STOP ASSY. RETRACTING SCREW UPPER

Associated Aircraft:   B-17