The Elbow,hose to Boss, cataloged under National Stock Number 4730-00-906-1778, 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 Hydrasearch Company, Llc. Government technical data includes 18 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-906-1778 |
| Primary Part Number | 4-191301-1-20 |
| Item Name | Elbow,hose to Boss |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Hydrasearch Company, Llc |
| Status | ACTIVE |
| Furnished Items and Quantity | 1 HOSE COUPLING NUT |
| Flow Angle | 90.0 DEGREES |
| Connection Style | GRIPPING NIPPLE (NOSE) FIRST END |
| Connection Style | EXTERNAL SEAT FOR GASKET SEAL (BOSS) SECOND END |
| Nominal Inside Diameter Hose Accommodated | 1.125 INCHES FIRST END IN |
| Nominal Outside Diameter Hose Accommodated | 1.500 INCHES FIRST END IN |
| Connection Type | THREADED EXTERNAL BOSS SECOND END |
| Connection Type | THREADED EXTERNAL HOSE GRIPPING FIRST END |
| Material Document and Classification | QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Leg Length | 3.170 INCHES NOMINAL SECOND END IN |
| Leg Length | 4.270 INCHES NOMINAL FIRST END IN |
| Nominal Thread Size | 2.312 INCHES SECOND END IN |
| Specification/standard Data | 81349-MIL-F-24787/3 GOVERNMENT SPECIFICATION |
| Nondefinitive Spec/std Data | VIII GRADE AND CL TYPE |
| Thread Class | 3A SECOND END A |
| Thread Quantity Per Inch | 12 SECOND END |
| Material | NICKEL ALLOY A OVERALL |
| Thread Series Designator | UNS SECOND END |
| 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 |
|---|---|
| 4-191301-1-20 PRIMARY | Hydrasearch Company, Llc (USA) |
| CMC-4-5701-1-20 | Custom Hydraulic & Machine, Inc. Dba Custom Hydraulic & Machine Inc (USA) |
| 90EF-1488CL-1620 | Hydrasearch Company, Llc (USA) |
| Reference | Meaning |
|---|---|
| 4-191301-1-20 | 3/9 Design control — primary reference Danfoss Power Solutions II, Llc |
| MIL-F-24787/3 | 5/9 Secondary reference U.S. Government activity |
| MIL-DTL-24787/3 | 4/1 Identification reference U.S. Government activity |
NSN 4730-00-906-1778 is a Elbow,hose to Boss, manufactured by Hydrasearch Company, Llc, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-906-1778 has 3 manufacturer part numbers on file: 4-191301-1-20 (Hydrasearch Company, Llc), CMC-4-5701-1-20 (Custom Hydraulic & Machine, Inc. Dba Custom Hydraulic & Machine Inc), 90EF-1488CL-1620 (Hydrasearch Company, Llc).
Key specifications for 4-191301-1-20: Furnished Items and Quantity: 1 HOSE COUPLING NUT; Flow Angle: 90.0 DEGREES; Connection Style: GRIPPING NIPPLE (NOSE) FIRST END; Connection Style: EXTERNAL SEAT FOR GASKET SEAL (BOSS) SECOND END. 18 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.