The Bolt,fluid Passage, cataloged under National Stock Number 4730-01-085-1329, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. Government technical data includes 25 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-085-1329 |
| Item Name | Bolt,fluid Passage |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| First End Thread Series Designator | UNF |
| Pressure Rating | 3000.000 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS |
| Width Across Flats | 0.750 INCHES NOMINAL IN |
| First End Thread Direction | RIGHT-HAND |
| Length From Bearing Surface of Wrenching Feature to End of First Diameter | 0.875 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | MIL-A-8625,TYPE 2 MIL SPEC SINGLE TREATMENT RESPONSE |
| Body Style | PLAIN |
| First End Thread Class | 3A A |
| First End Thread Quantity Per Inch | 20 |
| First End Style Designator | PLAIN |
| Concentric Hole Depth | 0.968 INCHES NOMINAL IN |
| Wrenching Feature Height | 0.172 INCHES NOMINAL IN |
| First End Thread Length | 0.300 INCHES NOMINAL IN |
| Wrenching Feature Style | HEXAGON |
| First End Seat Angle | 45.0 DEGREES NOMINAL |
| Specification/standard Data | 80205-NAS551 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Length From Bearing Surface of Wrenching Feature to Bolt End | 1.250 INCHES NOMINAL IN |
| First End Connection Type | THREADED EXTERNAL TUBE |
| Concentric Hole Diameter | 0.234 INCHES NOMINAL IN |
| Surface Treatment | ANODIZE |
| First Radial Fluid Hole Diameter | 0.219 INCHES NOMINAL IN |
| Distance From First Radial Hole Center to End of Bolt | 0.812 INCHES NOMINAL IN |
| Material | ALUMINUM |
| First Diameter From Wrenching Feature | 0.498 INCHES NOMINAL IN |
| First End Nominal Thread Size | 0.500 INCHES IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| NAS551-5DH | 3/2 Design control — primary reference U.S. Government activity |
NSN 4730-01-085-1329 is a Bolt,fluid Passage, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
Key specifications for 4730-01-085-1329: First End Thread Series Designator: UNF; Pressure Rating: 3000.000 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS; Width Across Flats: 0.750 INCHES NOMINAL IN; First End Thread Direction: RIGHT-HAND. 25 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.