The Bolt,fluid Passage, cataloged under National Stock Number 4730-01-424-3992, 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 27 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4730-01-424-3992 |
| 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 | 1.052 INCHES MINIMUM AND 1.065 INCHES MAXIMUM IN |
| First End Thread Direction | RIGHT-HAND |
| Second End Nominal Thread Size | 0.2500 INCHES IN |
| Length From Bearing Surface of Wrenching Feature to End of First Diameter | 7.062 INCHES NOMINAL IN |
| Second End Thread Class | 3B |
| Body Style | PLAIN |
| First End Thread Class | 3A A |
| Cotter Pin Hole Diameter | 0.131 INCHES MINIMUM AND 0.151 INCHES MAXIMUM IN |
| First End Style Designator | PLAIN |
| Concentric Hole Depth | 3.984 INCHES NOMINAL IN |
| Wrenching Feature Height | 0.375 INCHES MINIMUM AND 0.390 INCHES MAXIMUM IN |
| Second End Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| First End Thread Length | 0.790 INCHES NOMINAL 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 | 7.852 INCHES NOMINAL IN |
| First End Connection Type | THREADED EXTERNAL TUBE |
| Concentric Hole Diameter | 0.160 INCHES NOMINAL IN |
| Distance From Bolt End to Hole Center | 0.172 INCHES MINIMUM AND 0.192 INCHES MAXIMUM IN |
| First Radial Fluid Hole Diameter | 0.125 INCHES NOMINAL IN |
| Distance From First Radial Hole Center to End of Bolt | 4.250 INCHES NOMINAL IN |
| Material | TITANIUM |
| Second End Thread Length | 0.188 INCHES NOMINAL IN |
| Second End Connection Type | THREADED INTERNAL TUBE |
| First Diameter From Wrenching Feature | 0.7499 INCHES NOMINAL 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 |
|---|---|
| 17P6W6053 | D/9 Drawing number reference only U.S. Government activity |
| 17P6W6053-503 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4730-01-424-3992 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): 4730-01-424-4675, 4730-01-425-7678. Verify interchangeability with system specifications before substitution.
Key specifications for 4730-01-424-3992: First End Thread Series Designator: UNIFIED NATIONAL JOINT FINE (UNJF); Width Across Flats: 1.052 INCHES MINIMUM AND 1.065 INCHES MAXIMUM IN; First End Thread Direction: RIGHT-HAND; Second End Nominal Thread Size: 0.2500 INCHES IN. 27 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.