The Adapter,straight,tube to Boss, cataloged under National Stock Number 4730-00-391-3589, 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 Dana Off Highway Products, Llc. Government technical data includes 15 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-391-3589 |
| Primary Part Number | 691949 |
| Item Name | Adapter,straight,tube to Boss |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Dana Off Highway Products, Llc |
| Status | ACTIVE |
| Connection Style | INVERTED FLARE (TUBE) FIRST END |
| Connection Style | EXTERNAL SEAT FOR GASKET SEAL (BOSS) SECOND END |
| Nominal Overall Length | 0.953 INCHES IN |
| Connection Type | THREADED EXTERNAL BOSS SECOND END |
| Connection Type | THREADED INTERNAL TUBE FIRST END |
| Nominal Outside Diameter Tube Accommodated | 0.250 INCHES FIRST END IN |
| Reduced Passage Nominal Inside Diameter | 0.216 INCHES FIRST END IN |
| Nominal Thread Size | 0.500 INCHES SECOND END IN |
| Nominal Thread Size | 0.438 INCHES FIRST END IN |
| Seat Angle | 45.0 DEGREES FIRST END |
| Thread Class | 2A ALL ENDS A |
| Thread Quantity Per Inch | 24 FIRST END |
| Material | COPPER ALLOY OVERALL |
| Thread Series Designator | UNS FIRST END |
| Thread Series Designator | UNF 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 |
|---|---|
| 691949 | Dana Off Highway Products, Llc (USA) |
| Reference | Meaning |
|---|---|
| 691949 | 5/9 Secondary reference Clark Equipment Co |
| 373710 | 5/9 Secondary reference Honeywell International Inc Div Aerospace-South Bend (bendix Dr) |
| 373710 | 3/9 Design control — primary reference Bendix Corp the Brake and Steering Div |
NSN 4730-00-391-3589 is a Adapter,straight,tube to Boss, manufactured by Dana Off Highway Products, Llc, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-391-3589 has 1 manufacturer part number on file: 691949 (Dana Off Highway Products, Llc).
3 possible matches (shared part number, not a government interchangeability claim): 2840-00-477-4187, 5985-01-175-8405, 4730-01-355-4768. Verify interchangeability with system specifications before substitution.
Key specifications for 691949: Connection Style: INVERTED FLARE (TUBE) FIRST END; Connection Style: EXTERNAL SEAT FOR GASKET SEAL (BOSS) SECOND END; Nominal Overall Length: 0.953 INCHES IN; Connection Type: THREADED EXTERNAL BOSS SECOND END. 15 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.