The Reducer,boss, cataloged under National Stock Number 4730-00-992-9843, 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 Caprice Engineering Company, Inc.. Government technical data includes 14 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-992-9843 |
| Primary Part Number | 683C115P2 |
| Item Name | Reducer,boss |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Caprice Engineering Company, Inc. |
| Status | ACTIVE |
| FSC Application Data | ACFT HYDRAULIC,VACUUM,AND DEICING SYSTEMS COMPONENTS |
| Connection Style | DOUBLE THREADED SECTION W/ GASKET AND LOCKNUT SEALING (BOSS) SECOND END |
| Nominal Overall Length | 0.530 INCHES IN |
| Connection Type | THREADED INTERNAL BOSS FIRST END |
| Connection Type | THREADED EXTERNAL BOSS SECOND END |
| Nominal Thread Size | 0.750 INCHES SECOND END BULKHEAD IN |
| Nominal Thread Size | 0.938 INCHES FIRST END IN |
| Thread Class | 2A FIRST END A |
| Thread Class | 3B SECOND END |
| Thread Quantity Per Inch | 16 FIRST END |
| Material | STEEL OVERALL |
| Thread Series Designator | UN FIRST END |
| Thread Series Designator | UNF SECOND END BULKHEAD |
| 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 |
|---|---|
| 683C115P2 | Caprice Engineering Company, Inc. (USA) |
| 683C115P2 | B-C-D Metal Products, Inc (USA) |
| Reference | Meaning |
|---|---|
| 683C115P2 | 5/9 Secondary reference General Electric Company |
| 683C115P2 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4730-00-992-9843 is a Reducer,boss, manufactured by Caprice Engineering Company, Inc., classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-992-9843 has 2 manufacturer part numbers on file: 683C115P2 (Caprice Engineering Company, Inc.), 683C115P2 (B-C-D Metal Products, Inc).
Key specifications for 683C115P2: FSC Application Data: ACFT HYDRAULIC,VACUUM,AND DEICING SYSTEMS COMPONENTS; Connection Style: DOUBLE THREADED SECTION W/ GASKET AND LOCKNUT SEALING (BOSS) SECOND END; Nominal Overall Length: 0.530 INCHES IN; Connection Type: THREADED INTERNAL BOSS FIRST END. 14 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.