The Screw,adjusting,mirror, cataloged under National Stock Number 5305-01-221-4388, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-221-4388 |
| Item Name | Screw,adjusting,mirror |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| General Characteristics Item Description | ITEM SHAPED FROM CORROSION RESISTING STEEL BAR 0.531 IN. DIA,1.187 IN. LG,TO HAVE ONE END REDUCED TO 0.164 IN. DIA WITH EXTERNAL THREADS 32 UNC-3A 0.445 IN. LG,FOLLOWED BY 0.062 UNDERCUT TO 0.118 DIA,TO 0.0620 IN. THICK DISK,0.093 IN. UNDERCUT TO 0.130 IN. DIA,AND THEN TO 0.190 IN. DIA EXTERNAL THREADS 0.625 IN. TO THE END WHERE THERE IS A CENTERED SLOT 0.094 IN. DEEP,0.050 TO 0.060 IN. WIDE; 30 DEG GR00VE,0.031 IN. DEEP IN DISK PERIMETER,FILLED WITH BLACK ENGRAVING FILLER A |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 424532-1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-01-221-4388 is a Screw,adjusting,mirror, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-01-221-4388: General Characteristics Item Description: ITEM SHAPED FROM CORROSION RESISTING STEEL BAR 0.531 IN. DIA,1.187 IN. LG,TO HAVE ONE END REDUCED TO 0.164 IN. DIA WITH EXTERNAL THREADS 32 UNC-3A 0.445 IN. LG,FOLLOWED BY 0.062 UNDERCUT TO 0.118 DIA,TO 0.0620 IN. THICK DISK,0.093 IN. UNDERCUT TO 0.130 IN. DIA,AND THEN TO 0.190 IN. DIA EXTERNAL THREADS 0.625 IN. TO THE END WHERE THERE IS A CENTERED SLOT 0.094 IN. DEEP,0.050 TO 0.060 IN. WIDE; 30 DEG GR00VE,0.031 IN. DEEP IN DISK PERIMETER,FILLED WITH BLACK ENGRAVING FILLER A. 1 specification is documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.