The Plug,tube Fitting,threaded, cataloged under National Stock Number 4730-01-464-9389, 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 Honeywell International Inc. Div Aerospace - Torrance. Government technical data includes 12 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4730-01-464-9389 |
| Primary Part Number | 681599-1 |
| Item Name | Plug,tube Fitting,threaded |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Honeywell International Inc. Div Aerospace - Torrance |
| Status | ACTIVE |
| Head Height | 0.220 INCHES MINIMUM IN |
| Surface Treatment Document and Classification | MIL-A-8625, TYPE I MIL SPEC ALL TREATMENT RESPONSES OVERALL |
| Connection Style | FLARED |
| Style Designator | PLUG, TUBE FITTING FLARED (NOTE: DRILLED HOLE IS OPTIONAL, SHOULD NOT BE CONSIDERED AS A SEPARATING CHARACTERISTIC) |
| Material Document and Classification | AN815 ASSN STD ALL MATERIAL RESPONSES OVERALL |
| Thread Direction | RIGHT-HAND EXTERNAL |
| Nominal Thread Size | 0.250 INCHES EXTERNAL IN |
| Seat Angle | 37.0 DEGREES |
| Surface Treatment | ANODIZE OVERALL |
| Thread Class | 3A EXTERNAL A |
| Material | ALUMINUM ALLOY OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) EXTERNAL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 4730-01-464-9389 is a Plug,tube Fitting,threaded, manufactured by Honeywell International Inc. Div Aerospace - Torrance, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-464-9389 has 2 manufacturer part numbers on file: 681599-1 (Honeywell International Inc. Div Aerospace - Torrance), 681599-1 (Hoosier Industrial Supply, Inc).
1 possible match (shared part number, not a government interchangeability claim): 5331-01-541-3064. Verify interchangeability with system specifications before substitution.
Key specifications for 681599-1: Head Height: 0.220 INCHES MINIMUM IN; Surface Treatment Document and Classification: MIL-A-8625, TYPE I MIL SPEC ALL TREATMENT RESPONSES OVERALL; Connection Style: FLARED; Style Designator: PLUG, TUBE FITTING FLARED (NOTE: DRILLED HOLE IS OPTIONAL, SHOULD NOT BE CONSIDERED AS A SEPARATING CHARACTERISTIC). 12 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.