The Reducer,pipe, cataloged under National Stock Number 4730-01-112-1820, 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 Div Instrumentation Products Division. Government technical data includes 11 specifications, cited from the U.S. Government catalog. The record lists 3 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4730-01-112-1820 |
| Primary Part Number | 8-4FHC-SS |
| Item Name | Reducer,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Parker-Hannifin Corporation Div Instrumentation Products Division |
| Status | ACTIVE |
| Connection Style | PLAIN (PIPE) ALL ENDS |
| Nominal Overall Length | 1.750 INCHES IN |
| Connection Type | THREADED INTERNAL PIPE ALL ENDS |
| Operating Pressure | 4900.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Nominal Thread Size | 0.250 INCHES SECOND END IN |
| Nominal Thread Size | 0.500 INCHES FIRST END IN |
| Surface Treatment | PASSIVATE OVERALL |
| Media for Which Designed | HYDRAULIC FLUID SINGLE RESPONSE |
| Material | STEEL COMP 316 OVERALL |
| Thread Series Designator | NPT 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 |
|---|---|
| 8-4FHC-SS PRIMARY | Parker-Hannifin Corporation Div Instrumentation Products Division (USA) |
| 1/2X1/4HC | Ssp Fittings Corp (USA) |
| SS-8-HRCG-4 PRIMARY | Swagelok Co (USA) |
| Reference | Meaning |
|---|---|
| 1/2X1/4HRC | 5/9 Secondary reference Ssp Fittings Corp |
| SS-8-HRCG-4 | 5/9 Secondary reference Cajon Co |
NSN 4730-01-112-1820 is a Reducer,pipe, manufactured by Parker-Hannifin Corporation Div Instrumentation Products Division, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-112-1820 has 3 manufacturer part numbers on file: 8-4FHC-SS (Parker-Hannifin Corporation Div Instrumentation Products Division), 1/2X1/4HC (Ssp Fittings Corp), SS-8-HRCG-4 (Swagelok Co).
Key specifications for 8-4FHC-SS: Connection Style: PLAIN (PIPE) ALL ENDS; Nominal Overall Length: 1.750 INCHES IN; Connection Type: THREADED INTERNAL PIPE ALL ENDS; Operating Pressure: 4900.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS. 11 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.