The Union,pipe, cataloged under National Stock Number 4730-00-012-7961, 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 Quality Die Casting Corp. Government technical data includes 13 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-012-7961 |
| Primary Part Number | D40421PC10UN |
| Item Name | Union,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Quality Die Casting Corp |
| Status | ACTIVE |
| Furnished Items and Quantity | 1 PREFORMED PACKING |
| Nominal Pipe Size Accommodated | 0.500 INCHES SECOND END IN |
| Nominal Pipe Size Accommodated | 0.500 INCHES FIRST END IN |
| Connection Style | SOCKET (PIPE) ALL ENDS |
| Coupling Flange Shape | HEXAGON |
| Nominal Overall Length | 2.468 INCHES IN |
| Style Designator | SCREWED |
| Seat Type | RECESSED |
| Pipe Wall Thickness Designation for Which Designed | SCHEDULE STD ALL ENDS |
| Material | COPPER ALLOY TAILPIECE |
| Material | STEEL THREAD PIECE |
| Material | COPPER ALLOY NUT |
| Reducer Type | CONCENTRIC |
| 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 |
|---|---|
| D40421PC10UN | Quality Die Casting Corp (USA) |
| D40375PC10UN | Quality Die Casting Corp (USA) |
| Reference | Meaning |
|---|---|
| 71R3-70N3-76T3 | 5/9 Secondary reference Peterson Harry S Co Inc |
| 52R-3X50N-3X52T-3 | 3/2 Design control — primary reference U.S. Government activity |
| 52R-3X50N-3X51T-3 | 5/9 Secondary reference U.S. Government activity |
NSN 4730-00-012-7961 is a Union,pipe, manufactured by Quality Die Casting Corp, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-012-7961 has 2 manufacturer part numbers on file: D40421PC10UN (Quality Die Casting Corp), D40375PC10UN (Quality Die Casting Corp).
Key specifications for D40421PC10UN: Furnished Items and Quantity: 1 PREFORMED PACKING; Nominal Pipe Size Accommodated: 0.500 INCHES SECOND END IN; Nominal Pipe Size Accommodated: 0.500 INCHES FIRST END IN; Connection Style: SOCKET (PIPE) ALL ENDS. 13 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.