The Union,pipe, cataloged under National Stock Number 4730-00-079-0501, 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 Crane Co Div Valve Div. Government technical data includes 14 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-079-0501 |
| Primary Part Number | 1281-2IN |
| Item Name | Union,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Crane Co Div Valve Div |
| Status | ACTIVE |
| Nominal Pipe Size Accommodated | 2.000 INCHES SECOND END IN |
| Nominal Pipe Size Accommodated | 2.000 INCHES FIRST END IN |
| Connection Style | PLAIN (PIPE) FIRST END |
| Connection Style | PLAIN (PIPE) SECOND END |
| Nominal Overall Length | 4.250 INCHES IN |
| Operating Pressure | 150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Seat Type | GROUND-JOINT |
| Nominal Thread Size | 2.000 INCHES SECOND END IN |
| Nominal Thread Size | 2.000 INCHES FIRST END IN |
| Surface Treatment | ZINC INSIDE |
| Surface Treatment | ZINC OUTSIDE |
| Material | IRON OVERALL |
| Thread Series Designator | NPT SECOND END |
| Thread Series Designator | NPT FIRST END |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 551 | Anvil International, Inc. Dba Beck Manufacturing Div Beck Manufacturing (USA) |
| 1281-2IN PRIMARY | Crane Co Div Valve Div (USA) |
| Reference | Meaning |
|---|---|
| 416312-1 | 7/2 Vendor item drawing reference U.S. Government activity |
| M4 | 5/2 Secondary reference U.S. Government activity |
NSN 4730-00-079-0501 is a Union,pipe, manufactured by Crane Co Div Valve Div, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-079-0501 has 2 manufacturer part numbers on file: 551 (Anvil International, Inc. Dba Beck Manufacturing Div Beck Manufacturing), 1281-2IN (Crane Co Div Valve Div).
Key specifications for 1281-2IN: Nominal Pipe Size Accommodated: 2.000 INCHES SECOND END IN; Nominal Pipe Size Accommodated: 2.000 INCHES FIRST END IN; Connection Style: PLAIN (PIPE) FIRST END; Connection Style: PLAIN (PIPE) SECOND END. 14 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.