The Elbow,flange to Tube, cataloged under National Stock Number 4730-01-042-0508, 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 Oshkosh Defense Llc. Government technical data includes 20 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-042-0508 |
| Primary Part Number | 1SR29 |
| Item Name | Elbow,flange to Tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Oshkosh Defense Llc |
| Status | ACTIVE |
| Flange Shape | RECTANGULAR WITH HOLES SECOND END |
| Flow Angle | 90.0 DEGREES |
| Flange Face Design | PLAIN SECOND END |
| Connection Style | GROOVED (TUBE) FIRST END |
| Nominal Length | 3.990 INCHES SECOND END IN |
| Tubing Wall Nominal Thickness for Which Designed | 0.125 INCHES FIRST END IN |
| Connection Type | FLANGE SECOND END |
| Connection Type | UNTHREADED EXTERNAL TUBE FIRST END |
| Bolt Hole Nominal Diameter | 0.250 INCHES SECOND END IN |
| Nominal Outside Diameter Tube Accommodated | 2.125 INCHES FIRST END IN |
| Leg Length | 2.125 INCHES MINIMUM AND 2.391 INCHES MAXIMUM FIRST END IN |
| Leg Length | 3.141 INCHES MINIMUM AND 3.250 INCHES MAXIMUM SECOND END IN |
| Center to Center Nominal Distance Between Bolt Holes Along Width | 1.125 INCHES SECOND END IN |
| Bolt Hole Quantity | 6 SECOND END |
| Surface Treatment | CHROMIUM OVERALL |
| Nominal Width | 2.719 INCHES SECOND END IN |
| Center to Center Nominal Distance Between Bolt Holes Along Length | 1.625 INCHES SECOND END IN |
| Media for Which Designed | HYDRAULIC FLUID SINGLE RESPONSE |
| Material | ALUMINUM ALLOY OR ALUMINUM OVERALL |
| Nominal Thickness | 0.391 INCHES SECOND END IN |
| 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 |
|---|---|
| 1SR29 | Oshkosh Defense Llc (USA) |
| Reference | Meaning |
|---|---|
| 1SR29 | 5/9 Secondary reference Oshkosh Corp |
| RM1-143 | 3/9 Design control — primary reference Santa Rosa Mfg Co Inc |
| RMI-143 | C/1 Advisory reference — outside the item-of-supply concept Santa Rosa Mfg Co Inc |
NSN 4730-01-042-0508 is a Elbow,flange to Tube, manufactured by Oshkosh Defense Llc, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-042-0508 has 1 manufacturer part number on file: 1SR29 (Oshkosh Defense Llc).
Key specifications for 1SR29: Flange Shape: RECTANGULAR WITH HOLES SECOND END; Flow Angle: 90.0 DEGREES; Flange Face Design: PLAIN SECOND END; Connection Style: GROOVED (TUBE) FIRST END. 20 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.