The Bolt,fluid Passage, cataloged under National Stock Number 4730-00-450-1990, 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 26 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4730-00-450-1990 |
| Item Name | Bolt,fluid Passage |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| First End Thread Series Designator | UNF |
| Width Across Flats | 0.375 INCHES NOMINAL IN |
| First End Thread Direction | RIGHT-HAND |
| Second End Nominal Thread Size | 0.344 INCHES IN |
| Length From Bearing Surface of Wrenching Feature to End of First Diameter | 0.440 INCHES MINIMUM AND 0.460 INCHES MAXIMUM IN |
| Second End Thread Class | 3A A |
| Body Style | BODY WRENCHING |
| First End Thread Class | 3A A |
| First End Style Designator | PLAIN |
| Wrenching Feature Height | 0.255 INCHES NOMINAL IN |
| Second End Thread Series Designator | UNF |
| First End Thread Length | 10.000 INCHES NOMINAL IN |
| Wrenching Feature Style | HEXAGON |
| Material Document and Classification | MIL-S-7720 MIL SPEC SINGLE MATERIAL RESPONSE |
| Second End Thread Direction | RIGHT-HAND |
| Second End Style Designator | PLAIN |
| Length From Bearing Surface of Wrenching Feature to Bolt End | 0.800 INCHES NOMINAL IN |
| First End Connection Type | THREADED EXTERNAL TUBE |
| Concentric Hole Diameter | 0.061 INCHES MINIMUM AND 0.069 INCHES MAXIMUM IN |
| First Radial Fluid Hole Diameter | 0.061 INCHES MINIMUM AND 0.064 INCHES MAXIMUM IN |
| Distance From First Radial Hole Center to End of Bolt | 0.664 INCHES NOMINAL IN |
| Material | STEEL CORROSION RESISTING |
| Second End Thread Length | 10.000 INCHES NOMINAL IN |
| Second End Connection Type | THREADED EXTERNAL TUBE |
| First Diameter From Wrenching Feature | 0.146 INCHES NOMINAL IN |
| First End Nominal Thread Size | 0.344 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 |
|---|---|
| 364492-1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4730-00-450-1990 is a Bolt,fluid Passage, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
Key specifications for 4730-00-450-1990: First End Thread Series Designator: UNF; Width Across Flats: 0.375 INCHES NOMINAL IN; First End Thread Direction: RIGHT-HAND; Second End Nominal Thread Size: 0.344 INCHES IN. 26 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.