The Analog Readout,valv, cataloged under National Stock Number 4820-01-238-0440, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Avitest Llc. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Analog Readout,valv |
| FSC / FSG | 4820 — Valves, Nonpowered (FSG 48) |
| Manufacturers | Avitest Llc (CAGE 7VM91) |
| Parameter | Value |
|---|---|
| NSN | 4820-01-238-0440 |
| Primary Part Number | B-M 1200 PIECE 71 |
| Item Name | Analog Readout,valv |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Avitest Llc |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| B-M 1200 PIECE 71 PRIMARY | Avitest Llc (USA) |
| Reference | Meaning |
|---|---|
| B-M 1200 PIECE 71 | 3/9 Design control — primary reference Aviation Technology, Inc. |
| LM-100-1 | C/1 Advisory reference — outside the item-of-supply concept Webster Industries, Inc |
NSN 4820-01-238-0440 is a Analog Readout,valv, manufactured by Avitest Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-238-0440 has 1 manufacturer part number on file: B-M 1200 PIECE 71 (Avitest Llc).
1 possible match (shared part number, not a government interchangeability claim): 5365-01-543-1823. Verify interchangeability with system specifications before substitution.
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.