The Nipple,pipe, cataloged under National Stock Number 4730-01-304-2809, 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 Amz Alabama Inc.. Government technical data includes 9 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-304-2809 |
| Primary Part Number | 2521 2123-261 |
| Item Name | Nipple,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Amz Alabama Inc. |
| Status | ACTIVE |
| Thread Tolerance Class | 6G EXTERNAL ALL ENDS G |
| Connection Style | PLAIN (PIPE) ALL ENDS |
| Thread Pitch in Millimeters | 1.5 ALL ENDS |
| Nominal Overall Length | 39.0 MILLIMETERS MM |
| Connection Type | THREADED EXTERNAL PIPE ALL ENDS |
| Style Designator | PLAIN W/ CENTER WRENCHING FACILITY |
| Nominal Thread Size | 26.0 MILLIMETERS ALL ENDS MM |
| Material | STEEL OVERALL |
| Thread Series Designator | ISO S 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 |
| Part Number | Manufacturer |
|---|---|
| 2521 2123-261 | Amz Alabama Inc. (USA) |
| 91001-991 | Amz Alabama Inc. (USA) |
| 2521 2123-261 | Bae Systems Hagglunds Aktiebolag (SWE) |
| Reference | Meaning |
|---|---|
| 2512123-262 | 5/9 Secondary reference Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings) |
| 91001-991 | 5/9 Secondary reference Bae Systems Hagglunds Ab |
| 25212123 | D/9 Drawing number reference only Bae Systems Hagglunds Ab |
| 25212123-262 | 5/9 Secondary reference Bae Systems Hagglunds Ab |
| 91001-991 | 3/9 Design control — primary reference U.s. Defense Services, Inc. Dba Usds |
NSN 4730-01-304-2809 is a Nipple,pipe, manufactured by Amz Alabama Inc., classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-304-2809 has 3 manufacturer part numbers on file: 2521 2123-261 (Amz Alabama Inc.), 91001-991 (Amz Alabama Inc.), 2521 2123-261 (Bae Systems Hagglunds Aktiebolag).
Key specifications for 2521 2123-261: Thread Tolerance Class: 6G EXTERNAL ALL ENDS G; Connection Style: PLAIN (PIPE) ALL ENDS; Thread Pitch in Millimeters: 1.5 ALL ENDS; Nominal Overall Length: 39.0 MILLIMETERS MM. 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.