The Adapter,straight,tube to Hose, cataloged under National Stock Number 4730-00-187-0883, 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 Piper Industrial Manufacturing Company, Llc Div Piper Industrial Manufacturing Company. Government technical data includes 19 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through both NSN and commercial part number lookups. 13 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-187-0883 |
| Primary Part Number | 451 921 |
| Item Name | Adapter,straight,tube to Hose |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Piper Industrial Manufacturing Company, Llc Div Piper Industrial Manufacturing Company |
| Status | ACTIVE |
| Surface Treatment Document and Classification | MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Connection Style | BEADED (HOSE) SECOND END |
| Connection Style | FLARED (TUBE) FIRST END |
| Nominal Inside Diameter Hose Accommodated | 0.500 INCHES SECOND END IN |
| Nominal Overall Length | 3.109 INCHES IN |
| Connection Type | THREADED EXTERNAL TUBE FIRST END |
| Connection Type | UNTHREADED EXTERNAL HOSE SECOND END |
| Material Document and Classification | QQ-A-225/6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Outside Diameter Tube Accommodated | 0.500 INCHES FIRST END IN |
| Nominal Thread Size | 0.750 INCHES FIRST END BULKHEAD IN |
| Nominal Thread Size | 0.750 INCHES FIRST END IN |
| Seat Angle | 37.0 DEGREES FIRST END |
| Specification/standard Data | 88044-AN807 GOVERNMENT STANDARD AND 81343-AS4843/1 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Surface Treatment | ANODIZE OVERALL |
| Thread Class | 3A FIRST END A |
| Thread Class | 3A FIRST END BULKHEAD A |
| Material | ALUMINUM ALLOY 2024 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) FIRST END BULKHEAD |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) 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 |
|---|---|
| 451 921 | Piper Industrial Manufacturing Company, Llc Div Piper Industrial Manufacturing Company (USA) |
| Reference | Meaning |
|---|---|
| AN807-8D | 5/9 Secondary reference Designed Metal Connections Inc Dba Permaswage Usa Div Permaswage, a Pcc Company |
| AN807-8D | 2/2 Government specification standardization U.S. Government activity |
| AS4843/1 | 5/9 Secondary reference U.S. Government activity |
| AN807-8D | 5/9 Secondary reference Crown Fitting Co Inc |
| AN807-8D | 5/9 Secondary reference Faber Enterprises, Inc. Div Faber Enterprise Inc |
| AS4843/1 | 5/1 Secondary reference Sae International Dba Sae International |
| AN841-8D | 5/9 Secondary reference U.S. Government activity |
| AN807-8D | 5/1 Secondary reference Allan Aircraft Supply Co., Llc Dba Allan Aircraft Supply |
| AN807-8D | 5/1 Secondary reference Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution |
| AN807-8D | 5/1 Secondary reference Hydro-Fitting Manufacturing Corporation |
| MIL-F-5509 | 5/9 Secondary reference U.S. Government activity |
| AN807-8D | 5/9 Secondary reference Collins Engineering Corp |
| AN807-8D | 5/1 Secondary reference Acra Aerospace, Llc |
NSN 4730-00-187-0883 is a Adapter,straight,tube to Hose, manufactured by Piper Industrial Manufacturing Company, Llc Div Piper Industrial Manufacturing Company, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-187-0883 has 1 manufacturer part number on file: 451 921 (Piper Industrial Manufacturing Company, Llc Div Piper Industrial Manufacturing Company).
1 possible match (shared part number, not a government interchangeability claim): 7025-00-702-2767. Verify interchangeability with system specifications before substitution.
Key specifications for 451 921: Surface Treatment Document and Classification: MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Connection Style: BEADED (HOSE) SECOND END; Connection Style: FLARED (TUBE) FIRST END; Nominal Inside Diameter Hose Accommodated: 0.500 INCHES SECOND END IN. 19 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.