The Adapter,straight,tube to Hose, cataloged under National Stock Number 4730-01-291-8475, 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 13 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-291-8475 |
| Primary Part Number | EF-1602A-0606 |
| Item Name | Adapter,straight,tube to Hose |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Hydrasearch Company, Llc |
| Status | ACTIVE |
| Connection Style | SWIVEL NUT, FLARE (TUBE) STYLE 3 OPTIONAL END FIRST END |
| Connection Style | GRIPPING NIPPLE (NOSE) SECOND END |
| Nominal Inside Diameter Hose Accommodated | 0.375 INCHES SECOND END IN |
| Nominal Overall Length | 2.984 INCHES IN |
| Connection Type | UNTHREADED EXTERNAL HOSE SECOND END |
| Connection Type | THREADED INTERNAL TUBE FIRST END |
| Material Document and Classification | QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Outside Diameter Tube Accommodated | 0.375 INCHES FIRST END IN |
| Nominal Thread Size | 0.375 INCHES FIRST END IN |
| Seat Angle | 37.0 DEGREES FIRST END |
| Thread Class | 2B FIRST END |
| Material | NICKEL ALLOY OVERALL |
| Thread Series Designator | UNF FIRST 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 |
|---|---|
| EF-1602A-0606 PRIMARY | Hydrasearch Company, Llc (USA) |
| 4-4730-6-6 PRIMARY | Hydrasearch Company, Llc (USA) |
| CMC-4-5503-6-6 | Custom Hydraulic & Machine, Inc. Dba Custom Hydraulic & Machine Inc (USA) |
| Reference | Meaning |
|---|---|
| 20634-6-6M | 5/9 Secondary reference U.S. Government activity |
| 4-4730-6-6 | 3/9 Design control — primary reference Danfoss Power Solutions II, Llc |
| MIL-F-24787 | 4/1 Identification reference U.S. Government activity |
| MIL-H-24135 | 5/9 Secondary reference U.S. Government activity |
NSN 4730-01-291-8475 is a Adapter,straight,tube to Hose, manufactured by Hydrasearch Company, Llc, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-291-8475 has 3 manufacturer part numbers on file: EF-1602A-0606 (Hydrasearch Company, Llc), 4-4730-6-6 (Hydrasearch Company, Llc), CMC-4-5503-6-6 (Custom Hydraulic & Machine, Inc. Dba Custom Hydraulic & Machine Inc).
Key specifications for EF-1602A-0606: Connection Style: SWIVEL NUT, FLARE (TUBE) STYLE 3 OPTIONAL END FIRST END; Connection Style: GRIPPING NIPPLE (NOSE) SECOND END; Nominal Inside Diameter Hose Accommodated: 0.375 INCHES SECOND END IN; Nominal Overall Length: 2.984 INCHES IN. 13 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.