The Bolt,fluid Passage, cataloged under National Stock Number 4730-01-341-4958, 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 29 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-341-4958 |
| Item Name | Bolt,fluid Passage |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| First End Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Width Across Flats | 0.492 INCHES MINIMUM AND 0.502 INCHES MAXIMUM IN |
| First End Thread Direction | RIGHT-HAND |
| Second End Nominal Thread Size | 0.250 INCHES IN |
| Length From Bearing Surface of Wrenching Feature to End of First Diameter | 1.199 INCHES MINIMUM AND 1.209 INCHES MAXIMUM IN |
| Second End Thread Class | 3B |
| Body Style | PLAIN |
| First End Thread Class | 3A A |
| First End Style Designator | PLAIN |
| Concentric Hole Depth | 1.713 INCHES MINIMUM AND 1.758 INCHES MAXIMUM IN |
| Wrenching Feature Height | 0.156 INCHES MINIMUM AND 0.171 INCHES MAXIMUM IN |
| Second End Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| First End Thread Length | 0.593 INCHES MINIMUM AND 0.613 INCHES MAXIMUM IN |
| Wrenching Feature Style | HEXAGON |
| Second End Thread Direction | RIGHT-HAND |
| Second End Style Designator | DOUBLE COMPRESSION |
| Length From Bearing Surface of Wrenching Feature to Bolt End | 1.822 INCHES NOMINAL IN |
| Second End Seat Radius | 0.062 INCHES NOMINAL IN |
| First End Connection Type | THREADED EXTERNAL TUBE |
| Concentric Hole Diameter | 0.311 INCHES NOMINAL IN |
| First Radial Fluid Hole Diameter | 0.107 INCHES MINIMUM AND 0.114 INCHES MAXIMUM IN |
| Distance From First Radial Hole Center to End of Bolt | 1.756 INCHES NOMINAL IN |
| Material | NICKEL ALLOY |
| Second Radial Fluid Hole Diameter | 0.107 INCHES MINIMUM AND 0.114 INCHES MAXIMUM IN |
| Distance From Second Radial Hole Center to End of Bolt | 0.235 INCHES NOMINAL IN |
| Second End Thread Length | 0.762 INCHES MINIMUM AND 0.787 INCHES MAXIMUM IN |
| Second End Connection Type | THREADED INTERNAL TUBE |
| First Diameter From Wrenching Feature | 0.606 INCHES MINIMUM AND 0.616 INCHES MAXIMUM IN |
| First End Nominal Thread Size | 0.312 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 |
|---|---|
| 17P6W8248-513 | 3/2 Design control — primary reference U.S. Government activity |
| 17P6W8248 | D/9 Drawing number reference only U.S. Government activity |
NSN 4730-01-341-4958 is a Bolt,fluid Passage, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 4730-01-377-6611, 4730-01-377-6613. Verify interchangeability with system specifications before substitution.
Key specifications for 4730-01-341-4958: First End Thread Series Designator: UNIFIED NATIONAL JOINT FINE (UNJF); Width Across Flats: 0.492 INCHES MINIMUM AND 0.502 INCHES MAXIMUM IN; First End Thread Direction: RIGHT-HAND; Second End Nominal Thread Size: 0.250 INCHES IN. 29 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.