The Coupling,pipe, cataloged under National Stock Number 4730-00-899-9787, 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 Naval Inventory Control Point Mechanicsburg. Government technical data includes 12 specifications, 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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.
| Parameter | Value |
|---|---|
| NSN | 4730-00-899-9787 |
| Primary Part Number | 803-1385941 PC3 3/4INL1 |
| Item Name | Coupling,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Nominal Pipe Size Accommodated | 0.750 INCHES FIRST END IN |
| Connection Style | SOCKET W/ GROVE (PIPE) FIRST END |
| Nominal Overall Length | 2.125 INCHES IN |
| Criticality Code Justification | ZZZY |
| Connection Type | UNTHREADED INTERNAL PIPE FIRST END |
| Style Designator | PLAIN |
| Material Document and Classification | MIL-B-16541,GR A MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Operating Pressure | 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Pipe Wall Thickness Designation for Which Designed | SCHEDULE STD FIRST END |
| Media for Which Designed | WATER-OIL-GAS SINGLE RESPONSE |
| Material | COPPER ALLOY OVERALL |
| Reference Number Differentiating Characteristics | QUALITY CONTROL IAW NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR LEVEL 1 ITEMS |
| 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 |
|---|---|
| 803-1385941 PC3 3/4INL1 | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| 810-1385941PC3L1 | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| 803-1385941 PC3 3/4IN | 5/1 Secondary reference U.S. Government activity |
| 810-1385941PC3 | 3/1 Design control — primary reference U.S. Government activity |
NSN 4730-00-899-9787 is a Coupling,pipe, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-899-9787 has 1 manufacturer part number on file: 803-1385941 PC3 3/4INL1 (Naval Inventory Control Point Mechanicsburg).
1 possible match (shared part number, not a government interchangeability claim): 4730-00-899-9790. Verify interchangeability with system specifications before substitution.
Key specifications for 803-1385941 PC3 3/4INL1: Nominal Pipe Size Accommodated: 0.750 INCHES FIRST END IN; Connection Style: SOCKET W/ GROVE (PIPE) FIRST END; Nominal Overall Length: 2.125 INCHES IN; Criticality Code Justification: ZZZY. 12 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.
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.