The Union,pipe, cataloged under National Stock Number 4730-01-313-7277, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. Government technical data includes 9 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Union,pipe |
| FSC / FSG | 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings (FSG 47) |
| Parameter | Value |
|---|---|
| NSN | 4730-01-313-7277 |
| Item Name | Union,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Connection Style | PLAIN (PIPE) ALL ENDS |
| Nominal Overall Length | 2.500 INCHES IN |
| Connection Type | THREADED INTERNAL PIPE ALL ENDS |
| Style Designator | THREADED |
| Operating Pressure | 150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Seat Type | GROUND-JOINT |
| Nominal Thread Size | 1.250 INCHES ALL ENDS IN |
| Material | IRON AND COPPER ALLOY OVERALL |
| Thread Series Designator | NPT ALL ENDS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 51299-7 | 5/2 Secondary reference U.S. Government activity |
| 51299-7 | 5/9 Secondary reference Drs Environmental Systems Inc |
| 463-1-1/4 | 3/9 Design control — primary reference Grinnell Corp Sub of Tyco Intl Us Inc |
| 51299-7 | 5/9 Secondary reference U.S. Government activity |
NSN 4730-01-313-7277 is a Union,pipe, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
Key specifications for 4730-01-313-7277: Connection Style: PLAIN (PIPE) ALL ENDS; Nominal Overall Length: 2.500 INCHES IN; Connection Type: THREADED INTERNAL PIPE ALL ENDS; Style Designator: THREADED. 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.