The Guide,isolation Valve, cataloged under National Stock Number 1680-01-081-5590, 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1 specification, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 1680-01-081-5590 |
| Item Name | Guide,isolation Valve |
| FSC / FSG | 1680 / 16 — Miscellaneous Aircraft Accessories and Components |
| Status | ACTIVE |
| General Characteristics Item Description | STEEL CRES,300 SERIES,QQ-S-763,PASSIVATE,MIL-S-5002; O/A H IS 0.495 IN.,O/A DIA IS 0.673 IN.; SHAFT DIA IS 0.078 IN.,AND AT 0.110 IN H SHAFT ENLARGES TO 0.190 IN. DIA,THEN 0.250 IN. UP SHAFT IT AGAIN ENLARGES TO 0.406 IN. DIA WHICH IS 0.145 IN. D; 0.625-24UNEF-2A,L OF THREAD IS 0.220 A |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | N |
| Reference | Meaning |
|---|---|
| 2775512-101 | 3/2 Design control — primary reference U.S. Government activity |
NSN 1680-01-081-5590 is a Guide,isolation Valve, classified under FSC 1680, Miscellaneous Aircraft Accessories and Components. Status: active.
Key specifications for 1680-01-081-5590: General Characteristics Item Description: STEEL CRES,300 SERIES,QQ-S-763,PASSIVATE,MIL-S-5002; O/A H IS 0.495 IN.,O/A DIA IS 0.673 IN.; SHAFT DIA IS 0.078 IN.,AND AT 0.110 IN H SHAFT ENLARGES TO 0.190 IN. DIA,THEN 0.250 IN. UP SHAFT IT AGAIN ENLARGES TO 0.406 IN. DIA WHICH IS 0.145 IN. D; 0.625-24UNEF-2A,L OF THREAD IS 0.220 A; End Item Identification: C141 ACFT. 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 1680-01-081-5590 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.