The Coupling,pipe, cataloged under National Stock Number 4730-00-021-3020, 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 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. Government technical data includes 10 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-021-3020 |
| Primary Part Number | 2146437 |
| Item Name | Coupling,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| Status | ACTIVE |
| Surface Treatment Document and Classification | MIL-P-16232, TY M,CL 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Nominal Overall Length | 2.125 INCHES IN |
| Style Designator | PLAIN |
| Material Document and Classification | QQ-S-624,8640 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Size | 0.313 INCHES ALL ENDS IN |
| Surface Treatment | PHOSPHATE OVERALL |
| Thread Class | 3B ALL ENDS |
| Thread Quantity Per Inch | 24 ALL ENDS |
| Material | STEEL OVERALL |
| Thread Series Designator | UNF ALL ENDS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 2146437 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| BUWEPSDWG2146437 | Bae Systems Land & Armaments L.p. (USA) |
NSN 4730-00-021-3020 is a Coupling,pipe, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-021-3020 has 2 manufacturer part numbers on file: 2146437 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), BUWEPSDWG2146437 (Bae Systems Land & Armaments L.p.).
Key specifications for 2146437: Surface Treatment Document and Classification: MIL-P-16232, TY M,CL 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Nominal Overall Length: 2.125 INCHES IN; Style Designator: PLAIN; Material Document and Classification: QQ-S-624,8640 FED SPEC SINGLE MATERIAL RESPONSE OVERALL. 10 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.
NSN 4730-00-021-3020 has DEMIL Code D. 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.