The Bolt,fluid Passage, cataloged under National Stock Number 4730-01-274-0425, 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 21 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-274-0425 |
| 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 | 0.621 INCHES NOMINAL IN |
| First End Thread Direction | RIGHT-HAND |
| Length From Bearing Surface of Wrenching Feature to End of First Diameter | 1.250 INCHES NOMINAL IN |
| Body Style | SHOULDER |
| First End Thread Class | 2A A |
| First End Style Designator | PLAIN |
| Second Diameter From Wrenching Feature | 0.360 INCHES NOMINAL IN |
| Concentric Hole Depth | 0.680 INCHES NOMINAL IN |
| Wrenching Feature Height | 0.250 INCHES NOMINAL IN |
| First End Thread Length | 0.610 INCHES NOMINAL IN |
| Wrenching Feature Style | HEXAGON |
| Length From Bearing Surface of Wrenching Feature to End of Second Diameter | 1.310 INCHES NOMINAL IN |
| Length From Bearing Surface of Wrenching Feature to Bolt End | 1.670 INCHES NOMINAL IN |
| First End Connection Type | THREADED EXTERNAL TUBE |
| Concentric Hole Diameter | 0.096 INCHES NOMINAL IN |
| First Radial Fluid Hole Diameter | 0.096 INCHES NOMINAL IN |
| Distance From First Radial Hole Center to End of Bolt | 0.990 INCHES NOMINAL IN |
| Material | STEEL |
| First Diameter From Wrenching Feature | 0.4367 INCHES NOMINAL IN |
| First End Nominal Thread Size | 0.4375 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 |
|---|---|
| 6-59280-1 | 3/2 Design control — primary reference U.S. Government activity |
| 6-59280 | D/9 Drawing number reference only U.S. Government activity |
NSN 4730-01-274-0425 is a Bolt,fluid Passage, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
Key specifications for 4730-01-274-0425: First End Thread Series Designator: UNF; Width Across Flats: 0.621 INCHES NOMINAL IN; First End Thread Direction: RIGHT-HAND; Length From Bearing Surface of Wrenching Feature to End of First Diameter: 1.250 INCHES NOMINAL IN. 21 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.