The Regulator Assy,precision Pneumat, cataloged under National Stock Number 4820-01-073-8987, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Hamilton Sundstrand Corporation Dba Collins Aerospace. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-073-8987 |
| Primary Part Number | AD31351-1 |
| Item Name | Regulator Assy,precision Pneumat |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Hamilton Sundstrand Corporation Dba Collins Aerospace |
| Status | ACTIVE |
| General Characteristics Item Description | ASSEMBLY CONSISTS OF 1 EACH PRESSURE REGULATOR; 1 EACH PLUNGER; 1 EACH COUPLING; 4 EACH SCREW,CAP SOC HD; 1 EACH AIR CYLINDER; 1 EACH SPACER |
| 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 |
| Part Number | Manufacturer |
|---|---|
| AD31351-1 PRIMARY | Hamilton Sundstrand Corporation Dba Collins Aerospace (USA) |
NSN 4820-01-073-8987 is a Regulator Assy,precision Pneumat, manufactured by Hamilton Sundstrand Corporation Dba Collins Aerospace, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-073-8987 has 1 manufacturer part number on file: AD31351-1 (Hamilton Sundstrand Corporation Dba Collins Aerospace).
Key specifications for AD31351-1: General Characteristics Item Description: ASSEMBLY CONSISTS OF 1 EACH PRESSURE REGULATOR; 1 EACH PLUNGER; 1 EACH COUPLING; 4 EACH SCREW,CAP SOC HD; 1 EACH AIR CYLINDER; 1 EACH SPACER; End Item Identification: F100-PW100 ENGINE TEST STAND. 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 4820-01-073-8987 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.