The Adapter,straight,pipe to Tube, cataloged under National Stock Number 4730-01-633-7464, 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 9 specifications, cited from the U.S. Government catalog. The record lists 8 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 10 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-633-7464 |
| Primary Part Number | ERH821-0702B59L1 |
| Item Name | Adapter,straight,pipe to Tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Criticality Code Justification | ZZZW |
| Nominal Thread Size | 0.750 INCHES SECOND END IN |
| Nominal Thread Size | 1.312 INCHES FIRST END IN |
| Departure From Cited Document | MATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMS |
| Thread Class | 2A FIRST END A |
| Thread Quantity Per Inch | 12 FIRST END |
| Material | NICKEL ALLOY OVERALL |
| Thread Series Designator | UN FIRST END |
| Thread Series Designator | NPS SECOND END |
| 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 |
|---|---|
| ERH821-0702B59L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| 2633-021-01 PC 90AL1 | Naval Inventory Control Point Mechanicsburg (USA) |
| 751-7108123-78L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| 801-6640820 PC90AL1 | Naval Inventory Control Point Mechanicsburg (USA) |
| H821-0701-78L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| 751-7108124-78L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| H821-0702-78L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| H821-0703L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| 801-6640820 PC90A | 5/1 Secondary reference Naval Sea Systems Command |
| H821-0701-78 | 5/1 Secondary reference U.S. Government activity |
| H821-0702-78 | 5/1 Secondary reference U.S. Government activity |
| ERH821-0702B59 | 3/1 Design control — primary reference U.S. Government activity |
| 2633-021-01 PC 90A | 5/2 Secondary reference U.S. Government activity |
| H821-0703-78 | 5/1 Secondary reference U.S. Government activity |
| 1.312-12UN-2A X 0.750NPS NICU | 4/1 Identification reference U.S. Government activity |
| 751-7108124-78 | 5/1 Secondary reference Naval Sea Systems Command |
| 1.312-12UN-2A X 0.750NPS NICUL1 | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| 751-7108123-78 | 5/1 Secondary reference Naval Sea Systems Command |
NSN 4730-01-633-7464 is a Adapter,straight,pipe to Tube, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-633-7464 has 8 manufacturer part numbers on file: ERH821-0702B59L1 (Naval Inventory Control Point Mechanicsburg), 2633-021-01 PC 90AL1 (Naval Inventory Control Point Mechanicsburg), 751-7108123-78L1 (Naval Inventory Control Point Mechanicsburg), 801-6640820 PC90AL1 (Naval Inventory Control Point Mechanicsburg), H821-0701-78L1 (Naval Inventory Control Point Mechanicsburg) and 3 more.
Key specifications for ERH821-0702B59L1: Criticality Code Justification: ZZZW; Nominal Thread Size: 0.750 INCHES SECOND END IN; Nominal Thread Size: 1.312 INCHES FIRST END IN; Departure From Cited Document: MATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMS. 9 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.