The Bolt,fluid Passage, cataloged under National Stock Number 4730-01-595-7457, 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 7 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-595-7457 |
| Primary Part Number | NAS551-6D |
| Item Name | Bolt,fluid Passage |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Honeywell International Inc. Div Aerospace - Torrance |
| Status | ACTIVE |
| First End Thread Series Designator | UNIFIED NATIONAL JOINT (UNJ) |
| Width Across Flats | 1.609 INCHES MINIMUM AND 1.641 INCHES MAXIMUM IN |
| Body Style | PLAIN |
| First End Style Designator | PLAIN |
| Wrenching Feature Style | HEXAGON |
| First End Connection Type | THREADED EXTERNAL PIPE |
| Material | ALUMINUM ALLOY |
| 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 |
|---|---|
| NAS551-6D PRIMARY | Honeywell International Inc. Div Aerospace - Torrance (USA) |
NSN 4730-01-595-7457 is a Bolt,fluid Passage, manufactured by Honeywell International Inc. Div Aerospace - Torrance, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-595-7457 has 1 manufacturer part number on file: NAS551-6D (Honeywell International Inc. Div Aerospace - Torrance).
Key specifications for NAS551-6D: First End Thread Series Designator: UNIFIED NATIONAL JOINT (UNJ); Width Across Flats: 1.609 INCHES MINIMUM AND 1.641 INCHES MAXIMUM IN; Body Style: PLAIN; First End Style Designator: PLAIN. 7 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.