The Reducer,boss, cataloged under National Stock Number 4730-00-928-3453, 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 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through both NSN and commercial part number lookups. 13 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-928-3453 |
| Primary Part Number | AS5174K2016 |
| Item Name | Reducer,boss |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Sae International Dba Sae International |
| Status | ACTIVE |
| Surface Treatment Document and Classification | MIL-S-5002 MIL SPEC 1ST TREATMENT RESPONSE AND QQ-P-35,TY 1 FED SPEC 2ND TREATMENT RESPONSE OVERALL |
| Connection Style | FLARED W/ GASKET SEAL (BOSS) ALL ENDS |
| Nominal Overall Length | 2.250 INCHES IN |
| Connection Type | THREADED EXTERNAL BOSS ALL ENDS |
| Material Document and Classification | 66,AISI 316/SAE 30316 FED STD 1ST MATERIAL RESPONSE OR 66,AISI 304/SAE 304 FED STD 2ND MATERIAL RESPONSE OR 66,AISI 347/SAE 30347 FED STD 3RD MATERIAL RESPONSE OVERALL |
| Operating Pressure | 1500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Nominal Thread Size | 1.625 INCHES FIRST END IN |
| Nominal Thread Size | 1.312 INCHES SECOND END IN |
| Specification/standard Data | 96906-MS24399 GOVERNMENT STANDARD |
| Maximum Operating Temp | 71.0 CELSIUS SINGLE RESPONSE DEGC |
| Surface Treatment | PASSIVATE OVERALL |
| Media for Which Designed | OXYGEN, GASEOUS SECOND RESPONSE |
| Media for Which Designed | HYDRAULIC FLUID FIRST RESPONSE |
| Media for Which Designed | AERONAUTICAL FLUID THIRD RESPONSE |
| Thread Class | 3A ALL ENDS A |
| Thread Quantity Per Inch | 12 ALL ENDS |
| Material | STEEL COMP 316 OR STEEL COMP 304 OR STEEL COMP 347 OVERALL |
| Thread Series Designator | UN ALL ENDS |
| 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 |
|---|---|
| AS5174K2016 PRIMARY | Sae International Dba Sae International (USA) |
| Reference | Meaning |
|---|---|
| AN919-26K | 5/9 Secondary reference Collins Engineering Corp |
| AS4841 | 5/9 Secondary reference U.S. Government activity |
| AN919-26K | 5/9 Secondary reference U.S. Government activity |
| AS5174 | 5/9 Secondary reference U.S. Government activity |
| AS4841 | 5/9 Secondary reference Sae International Dba Sae International |
| AN919-26K | 5/9 Secondary reference Faber Enterprises, Inc. Div Faber Enterprise Inc |
| MS24399K27 | 5/9 Secondary reference U.S. Government activity |
| AN919-26K | 5/9 Secondary reference Acra Aerospace, Llc |
| AN919-26K | 5/9 Secondary reference Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution |
| AN919-26K | 5/9 Secondary reference Crown Fitting Co Inc |
| SAE-AS4841 | 3/1 Design control — primary reference Sae International Dba Sae International |
| AS5174K2016 | 5/9 Secondary reference U.S. Government activity |
| AS5174 | 5/9 Secondary reference Sae International Dba Sae International |
NSN 4730-00-928-3453 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 4730-00-928-3453 has 1 manufacturer part number on file: AS5174K2016 (Sae International Dba Sae International).
Key specifications for AS5174K2016: Surface Treatment Document and Classification: MIL-S-5002 MIL SPEC 1ST TREATMENT RESPONSE AND QQ-P-35,TY 1 FED SPEC 2ND TREATMENT RESPONSE OVERALL; Connection Style: FLARED W/ GASKET SEAL (BOSS) ALL ENDS; Nominal Overall Length: 2.250 INCHES IN; Connection Type: THREADED EXTERNAL BOSS ALL ENDS. 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.