The Elbow,tube to Boss, cataloged under National Stock Number 4730-01-281-0989, 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 19 specifications, cited from the U.S. Government catalog. The record lists 5 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 9 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-281-0989 |
| Primary Part Number | 20-C5OLO-S-C0873 |
| Item Name | Elbow,tube to 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 |
| Flow Angle | 90.0 DEGREES |
| Connection Style | EXTERNAL SEAT FOR GASKET SEAL (BOSS) SECOND END |
| Connection Style | GASKET SEAL (TUBE) FIRST END |
| Criticality Code Justification | FEAT |
| Connection Type | THREADED EXTERNAL TUBE FIRST END |
| Connection Type | THREADED EXTERNAL BOSS SECOND END |
| Nominal Outside Diameter Tube Accommodated | 1.250 INCHES FIRST END IN |
| Operating Pressure | 4000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Leg Length | 1.760 INCHES NOMINAL FIRST END IN |
| Leg Length | 2.453 INCHES NOMINAL SECOND END IN |
| Nominal Thread Size | 1.625 INCHES SECOND END IN |
| Nominal Thread Size | 1.688 INCHES FIRST END IN |
| Maximum Operating Temp | 250.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Surface Treatment | CADMIUM OVERALL |
| Thread Class | 2A ALL ENDS A |
| Thread Quantity Per Inch | 12 ALL ENDS |
| Material | STEEL OVERALL |
| Thread Series Designator | UN ALL ENDS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| FF1868T-2020S | Danfoss Power Solutions II, Llc (USA) |
| 20C5L-S | Parker Hannifin Canada Div Fluid Connectors Canada (CAN) |
| 1781420 | Oshkosh Defense Llc (USA) |
| GD520220S-20-20 | General Dynamics Land Systems Canadacorp (CAN) |
| 20-C5OLO-S-C0873 PRIMARY | Parker-Hannifin Corporation Dba Pneutronics Div Tube Fittings Division (USA) |
| Reference | Meaning |
|---|---|
| 20C5L-S | 5/9 Secondary reference U.S. Government activity |
| 1781420 | 5/9 Secondary reference Oshkosh Corp |
| 17-2-0278-7 | 7/2 Vendor item drawing reference U.S. Government activity |
| 20C5OLO-S | 5/9 Secondary reference Parker-Hannifin Corporation Dba Pneutronics Div Tube Fittings Division |
| 849-TTO-20X20 | 5/9 Secondary reference Parker Hannifin Corp Hose Products Div |
| 7-447-202003 | 5/9 Secondary reference Grove U.s. Llc Dba Grove Us Llc |
| 20C5OLO-S | 5/9 Secondary reference U.S. Government activity |
| 849-TTO-20X20 | 5/9 Secondary reference Imperial |
| 7-447-202003 | 5/9 Secondary reference Minnpar, Llc Dba Minnpar |
NSN 4730-01-281-0989 is a Elbow,tube to 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 4730-01-281-0989 has 5 manufacturer part numbers on file: FF1868T-2020S (Danfoss Power Solutions II, Llc), 20C5L-S (Parker Hannifin Canada Div Fluid Connectors Canada), 1781420 (Oshkosh Defense Llc), GD520220S-20-20 (General Dynamics Land Systems Canadacorp), 20-C5OLO-S-C0873 (Parker-Hannifin Corporation Dba Pneutronics Div Tube Fittings Division).
1 possible match (shared part number, not a government interchangeability claim): 4730-01-576-1203. Verify interchangeability with system specifications before substitution.
Key specifications for 20-C5OLO-S-C0873: Furnished Items and Quantity: 1 PREFORMED PACKING; Flow Angle: 90.0 DEGREES; Connection Style: EXTERNAL SEAT FOR GASKET SEAL (BOSS) SECOND END; Connection Style: GASKET SEAL (TUBE) FIRST END. 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.