The Adapter,check Valve, cataloged under National Stock Number 4730-01-437-5303, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Preci-Manufacturing, Incorporated. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 6 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-437-5303 |
| Primary Part Number | 524436-3 |
| Item Name | Adapter,check Valve |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Preci-Manufacturing, Incorporated |
| Status | ACTIVE |
| Criticality Code Justification | FEAT |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| 524436-3 | Preci-Manufacturing, Incorporated (USA) |
| 524436-3 | Capy Machine Shop Inc. Dba Capy Machine Shop Inc (USA) |
| 524436-3 | Bay City Shovels, Inc (USA) |
| 524436-3 | Costa Precision Manufacturing Corp (USA) |
| 524436-3 | Bec Systems Llc Dba Bec Machine Products (USA) |
| 524436-3 | Duhadaway Tool & Die Shop Inc (USA) |
| Reference | Meaning |
|---|---|
| 524436-3 | 5/9 Secondary reference Computa-Base-Machining, Inc. |
| 524436-3 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4730-01-437-5303 is a Adapter,check Valve, manufactured by Preci-Manufacturing, Incorporated, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-437-5303 has 6 manufacturer part numbers on file: 524436-3 (Preci-Manufacturing, Incorporated), 524436-3 (Capy Machine Shop Inc. Dba Capy Machine Shop Inc), 524436-3 (Bay City Shovels, Inc), 524436-3 (Costa Precision Manufacturing Corp), 524436-3 (Bec Systems Llc Dba Bec Machine Products) and 1 more.
Key specifications for 524436-3: Criticality Code Justification: FEAT; Special Features: ITEM IS A NON-AVIATION CRITICAL SAFETY ITEM (CSI) WHOSE FAILURE WILL RESULT IN SERIOUS DAMAGE TO EQUIPMENT OR SERIOUS INJURY OR DEATH TO PERSONNEL.; End Item Identification: PREPROVISIONING SUPPORT NAVICP IS POE. 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.