The Reducer,boss, cataloged under National Stock Number 4730-00-187-3586, 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 Sae International Dba Sae International. 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through both NSN and commercial part number lookups. 14 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4730-00-187-3586 |
| Primary Part Number | AS5174D1004 |
| Item Name | Reducer,boss |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Sae International Dba Sae International |
| Status | ACTIVE |
| Nominal Overall Length | 1.656 INCHES IN |
| Connection Type | THREADED EXTERNAL BOSS ALL ENDS |
| Material Document and Classification | QQ-A-225/,T6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Operating Pressure | 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Nominal Thread Size | 0.438 INCHES SECOND END IN |
| Nominal Thread Size | 0.875 INCHES FIRST END IN |
| Specification/standard Data | 81343-AS5174 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Maximum Operating Temp | 275.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Surface Treatment | ANODIZE OVERALL |
| Thread Class | 3A ALL ENDS A |
| Material | ALUMINUM ALLOY OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) FIRST END |
| Thread Series Designator | UNF SECOND 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 |
|---|---|
| AS5174D1004 PRIMARY | Sae International Dba Sae International (USA) |
| AS5174D1004 | Satair A/s (DNK) |
| Reference | Meaning |
|---|---|
| AS5174 | 5/9 Secondary reference U.S. Government activity |
| 273-0089-014 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| AS4841 | 5/9 Secondary reference Sae International Dba Sae International |
| AS5174D1004 | 5/9 Secondary reference Designed Metal Connections Inc Dba Permaswage Usa Div Permaswage, a Pcc Company |
| AS5174D1004 | C/1 Advisory reference — outside the item-of-supply concept Faber Enterprises, Inc. Div Faber Enterprise Inc |
| AS5174D1004 | 5/9 Secondary reference U.S. Government activity |
| AS5174D1004 | C/1 Advisory reference — outside the item-of-supply concept Hydro-Fitting Manufacturing Corporation |
| AS5174D1004 | C/1 Advisory reference — outside the item-of-supply concept Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution |
| AS4841 | 5/9 Secondary reference U.S. Government activity |
| AS5174 | 5/9 Secondary reference Sae International Dba Sae International |
| AS5174D1004 | C/1 Advisory reference — outside the item-of-supply concept Allan Aircraft Supply Co., Llc Dba Allan Aircraft Supply |
| SAE-AS4841 | 3/1 Design control — primary reference Sae International Dba Sae International |
| AN919-13D | 5/9 Secondary reference U.S. Government activity |
| AN919-13D | 5/9 Secondary reference Satair A/s |
NSN 4730-00-187-3586 is a Reducer,boss, manufactured by Sae International Dba Sae International, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-187-3586 has 2 manufacturer part numbers on file: AS5174D1004 (Sae International Dba Sae International), AS5174D1004 (Satair A/s).
2 possible matches (shared part number, not a government interchangeability claim): 4730-00-684-7452, 4730-01-271-0220. Verify interchangeability with system specifications before substitution.
Key specifications for AS5174D1004: Nominal Overall Length: 1.656 INCHES IN; Connection Type: THREADED EXTERNAL BOSS ALL ENDS; Material Document and Classification: QQ-A-225/,T6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Operating Pressure: 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS. 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.