The Rod,inboard Valve, cataloged under National Stock Number 4820-01-085-1851, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-085-1851 |
| Item Name | Rod,inboard Valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| General Characteristics Item Description | MATERIAL NICKEL-COPPER ALUMINUM ALLOY PER QQ-N-286 CLASS A; LENGTH OVERALL 46.060 IN.; 1ST END EXTERNALLY THREADED; UN 2.250-12 3A FIT; THREAD LENGTH 2.250 IN.; 2ND STEP 2.498 DIA LENGTH 27.810 IN.; 3RD STEP 2.750 IN. DIA LENGTH 8.578 IN.; 4TH STEP DIA 2.498 IN.; LENGTH 1.500 IN.; 5TH STEP 1.997 IN. DIA LENGTH 4.062 IN.; 2ND END EXTERNALLY THREADED UN 1.500-12 3A FIT; THREAD LENGTH 1.610 IN. 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 |
|---|---|
| 87552-0607 ITEM 9 | 3/2 Design control — primary reference U.S. Government activity |
| 515-4674115 ITEM 9 | 3/2 Design control — primary reference U.S. Government activity |
| 515-4674115 | D/9 Drawing number reference only U.S. Government activity |
NSN 4820-01-085-1851 is a Rod,inboard Valve, classified under FSC 4820, Valves, Nonpowered. Status: active.
4 possible matches (shared part number, not a government interchangeability claim): 4730-01-085-4960, 4710-01-085-7747, 4820-01-117-9626. Verify interchangeability with system specifications before substitution.
Key specifications for 4820-01-085-1851: General Characteristics Item Description: MATERIAL NICKEL-COPPER ALUMINUM ALLOY PER QQ-N-286 CLASS A; LENGTH OVERALL 46.060 IN.; 1ST END EXTERNALLY THREADED; UN 2.250-12 3A FIT; THREAD LENGTH 2.250 IN.; 2ND STEP 2.498 DIA LENGTH 27.810 IN.; 3RD STEP 2.750 IN. DIA LENGTH 8.578 IN.; 4TH STEP DIA 2.498 IN.; LENGTH 1.500 IN.; 5TH STEP 1.997 IN. DIA LENGTH 4.062 IN.; 2ND END EXTERNALLY THREADED UN 1.500-12 3A FIT; THREAD LENGTH 1.610 IN. 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.