The Nipple,pipe, cataloged under National Stock Number 4730-00-784-8498, 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 Meggitt (north Hollywood), Inc. Dba Meggitt Control Systems Div Meggitt Defense Systems, Inc.. Government technical data includes 11 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-784-8498 |
| Primary Part Number | 23591 |
| Item Name | Nipple,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Meggitt (north Hollywood), Inc. Dba Meggitt Control Systems Div Meggitt Defense Systems, Inc. |
| Status | ACTIVE |
| Connection Style | PLAIN (PIPE) ALL ENDS |
| Nominal Overall Length | 2.031 INCHES IN |
| Connection Type | THREADED EXTERNAL PIPE ALL ENDS |
| Style Designator | SHORT |
| Leg Length | 0.719 INCHES MINIMUM AND 0.781 INCHES MAXIMUM SECOND END IN |
| Leg Length | 0.781 INCHES MAXIMUM FIRST END IN |
| Nominal Thread Size | 0.750 INCHES ALL ENDS IN |
| Surface Treatment | ANODIZE OVERALL |
| Media for Which Designed | FLUID SINGLE RESPONSE |
| Material | ALUMINUM ALLOY OR ALUMINUM 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 |
| Part Number | Manufacturer |
|---|---|
| 23591 PRIMARY | Meggitt (north Hollywood), Inc. Dba Meggitt Control Systems Div Meggitt Defense Systems, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 23591 | 5/9 Secondary reference Howden Fluid Systems |
NSN 4730-00-784-8498 is a Nipple,pipe, manufactured by Meggitt (north Hollywood), Inc. Dba Meggitt Control Systems Div Meggitt Defense Systems, Inc., classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-784-8498 has 1 manufacturer part number on file: 23591 (Meggitt (north Hollywood), Inc. Dba Meggitt Control Systems Div Meggitt Defense Systems, Inc.).
5 possible matches (shared part number, not a government interchangeability claim): 3510-01-036-7530, 5962-01-180-3448, 5998-01-216-0995. Verify interchangeability with system specifications before substitution.
Key specifications for 23591: Connection Style: PLAIN (PIPE) ALL ENDS; Nominal Overall Length: 2.031 INCHES IN; Connection Type: THREADED EXTERNAL PIPE ALL ENDS; Style Designator: SHORT. 11 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.