The Guide,valve Stem, cataloged under National Stock Number 4820-01-056-1667, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 2 specifications, cited from the U.S. Government catalog. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-056-1667 |
| Item Name | Guide,valve Stem |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Criticality Code Justification | ZZZY |
| Reference Number Differentiating Characteristics | QUALITY CONTROL IAW NAVSHIP 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR LEVEL 1 ITEMS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Reference | Meaning |
|---|---|
| 2620-906X09 PIECE 3 | 5/9 Secondary reference U.S. Government activity |
| 2620-906X09 PIECE 3L1 | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| 2621-906X13 PIECE 23 | 5/1 Secondary reference Circor Instrumentation Technologies, Inc. Dba Hoke Gyrolok |
| 2621-906X13 PIECE 23L1 | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| SS845-2110224 PIECE 3 | 3/1 Design control — primary reference U.S. Government activity |
| 2621-906X13 PIECE 23 | 5/9 Secondary reference U.S. Government activity |
| SS845-2110224 PIECE 3L1 | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| 2620-906X09 PIECE 3 | 5/1 Secondary reference Circor Instrumentation Technologies, Inc. Dba Hoke Gyrolok |
NSN 4820-01-056-1667 is a Guide,valve Stem, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-01-056-1667: Criticality Code Justification: ZZZY; End Item Identification: VALVE,GLOBE; Reference Number Differentiating Characteristics: QUALITY CONTROL IAW NAVSHIP 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR LEVEL 1 ITEMS. 2 specifications are 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.