The Stop,spring,valve, cataloged under National Stock Number 1680-00-446-4254, is classified within Federal Supply Class 1680 (Miscellaneous Aircraft Accessories and Components) of the Aircraft Components and Accessories 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1 specification, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 1680-00-446-4254 |
| Item Name | Stop,spring,valve |
| FSC / FSG | 1680 / 16 — Miscellaneous Aircraft Accessories and Components |
| Status | ACTIVE |
| General Characteristics Item Description | CRES,QQ-S-763,PASSIVATED,0.500 IN. DIA LARGE END,0.368 IN. MIN,0.370 IN. DIA SMALL END,0.065 W FLANGE,TWO 0.094 IN. DIA THROUGH HOLESSPACED 0.220 IN. C TO C,ONE 0.076 IN. MIN,0.078 IN. MAX DIA BY 0.058IN. MIN,0.060 IN. MAX DEEP HOLE IN CENTER OF STOP WITH 118 DEGREEPOINT ANGLE,0.130 IN. O/A LG W |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 30001289 | 3/2 Design control — primary reference U.S. Government activity |
NSN 1680-00-446-4254 is a Stop,spring,valve, classified under FSC 1680, Miscellaneous Aircraft Accessories and Components. Status: active.
Key specifications for 1680-00-446-4254: General Characteristics Item Description: CRES,QQ-S-763,PASSIVATED,0.500 IN. DIA LARGE END,0.368 IN. MIN,0.370 IN. DIA SMALL END,0.065 W FLANGE,TWO 0.094 IN. DIA THROUGH HOLESSPACED 0.220 IN. C TO C,ONE 0.076 IN. MIN,0.078 IN. MAX DIA BY 0.058IN. MIN,0.060 IN. MAX DEEP HOLE IN CENTER OF STOP WITH 118 DEGREEPOINT ANGLE,0.130 IN. O/A LG W. 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.
NSN 1680-00-446-4254 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.