The Bolt,fluid Passage, cataloged under National Stock Number 4730-00-164-9277, 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21 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4730-00-164-9277 |
| 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 | 1.875 INCHES NOMINAL IN |
| First End Thread Direction | RIGHT-HAND |
| Length From Bearing Surface of Wrenching Feature to End of First Diameter | 3.562 INCHES NOMINAL IN |
| Body Style | PLAIN |
| First End Thread Class | 2A A |
| First End Thread Quantity Per Inch | 12 |
| Concentric Hole Depth | 3.250 INCHES NOMINAL IN |
| Wrenching Feature Height | 0.500 INCHES NOMINAL IN |
| First End Thread Length | 1.250 INCHES NOMINAL IN |
| Wrenching Feature Style | HEXAGON |
| Length From Bearing Surface of Wrenching Feature to Bolt End | 5.938 INCHES NOMINAL IN |
| First End Connection Type | THREADED EXTERNAL TUBE |
| Concentric Hole Diameter | 0.312 INCHES NOMINAL IN |
| First Radial Fluid Hole Diameter | 0.250 INCHES NOMINAL IN |
| Distance From First Radial Hole Center to End of Bolt | 2.688 INCHES NOMINAL IN |
| Material | STEEL |
| Second Radial Fluid Hole Diameter | 0.250 INCHES NOMINAL IN |
| Distance From Second Radial Hole Center to End of Bolt | 1.438 INCHES NOMINAL IN |
| First Diameter From Wrenching Feature | 1.250 INCHES NOMINAL IN |
| First End Nominal Thread Size | 1.125 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 |
|---|---|
| 500791K1 | 3/9 Design control — primary reference Lucas Western Inc |
| 1X13251 | 5/9 Secondary reference Lucas Western Inc |
NSN 4730-00-164-9277 is a Bolt,fluid Passage, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
Key specifications for 4730-00-164-9277: First End Thread Series Designator: UNF; Width Across Flats: 1.875 INCHES NOMINAL IN; First End Thread Direction: RIGHT-HAND; Length From Bearing Surface of Wrenching Feature to End of First Diameter: 3.562 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.