The Reducer,boss, cataloged under National Stock Number 4730-00-133-5547, 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 Parker-Hannifin Corporation Dba Pneutronics Div Tube Fittings Division. Government technical data includes 15 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4730-00-133-5547 |
| Primary Part Number | 12-8F50G5SS |
| Item Name | Reducer,boss |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Parker-Hannifin Corporation Dba Pneutronics Div Tube Fittings Division |
| Status | ACTIVE |
| Furnished Items and Quantity | 1 PREFORMED PACKING |
| Connection Style | EXTERNAL SEAT FOR GASKET SEAL (BOSS) SECOND END |
| Connection Style | GASKET SEAL (BOSS) FIRST END |
| Nominal Overall Length | 1.000 INCHES IN |
| Material Document and Classification | 66 FED STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Size | 0.750 INCHES FIRST END IN |
| Nominal Thread Size | 1.062 INCHES SECOND END IN |
| Surface Treatment | PASSIVATE OVERALL |
| Thread Class | 2A SECOND END A |
| Thread Class | 2B FIRST END |
| Thread Quantity Per Inch | 12 FIRST END |
| Material | STEEL COMP 316 OVERALL |
| Thread Series Designator | UN SECOND END |
| Thread Series Designator | UNF FIRST END |
| 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 |
|---|---|
| 10556049-3 | General Dynamics Land Systems Canadacorp (CAN) |
| 12-8F50G5SS PRIMARY | Parker-Hannifin Corporation Dba Pneutronics Div Tube Fittings Division (USA) |
| 125546 PRIMARY | Omark Industries Inc Hydraulic Materials Handling Div (USA) |
| 125650 | Omark Industries Inc Hydraulic Materials Handling Div (USA) |
| Reference | Meaning |
|---|---|
| 7245167-2 | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
| 12-8F50G5SS | 5/9 Secondary reference U.S. Government activity |
| SMA778196-22 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| 7245167-1 | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
| 12-8F50G5SS | C/1 Advisory reference — outside the item-of-supply concept Parker-Hannifin Corporation Div Gas Turbine Fuel Systems |
| 12-8F50G5SS | 5/9 Secondary reference Parker-Hannifin Corporation Dba Pneutronics Div Corporate Headquarters |
| 7237738-3 | 7/2 Vendor item drawing reference Lockheed Martin Corporation Div Rms |
NSN 4730-00-133-5547 is a Reducer,boss, manufactured by Parker-Hannifin Corporation Dba Pneutronics Div Tube Fittings Division, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-133-5547 has 4 manufacturer part numbers on file: 10556049-3 (General Dynamics Land Systems Canadacorp), 12-8F50G5SS (Parker-Hannifin Corporation Dba Pneutronics Div Tube Fittings Division), 125546 (Omark Industries Inc Hydraulic Materials Handling Div), 125650 (Omark Industries Inc Hydraulic Materials Handling Div).
2 possible matches (shared part number, not a government interchangeability claim): 5120-01-088-0026, 5340-01-680-3530. Verify interchangeability with system specifications before substitution.
Key specifications for 12-8F50G5SS: Furnished Items and Quantity: 1 PREFORMED PACKING; Connection Style: EXTERNAL SEAT FOR GASKET SEAL (BOSS) SECOND END; Connection Style: GASKET SEAL (BOSS) FIRST END; Nominal Overall Length: 1.000 INCHES IN. 15 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.