The Bolt,fluid Passage, cataloged under National Stock Number 4730-01-153-1428, 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 28 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4730-01-153-1428 |
| 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 COARSE (UNC) |
| Width Across Flats | 1.125 INCHES NOMINAL IN |
| First End Thread Direction | RIGHT-HAND |
| Second End Nominal Thread Size | 0.125 INCHES IN |
| Length From Bearing Surface of Wrenching Feature to End of First Diameter | 1.711 INCHES NOMINAL IN |
| Body Style | SHOULDER |
| First End Thread Class | 3A A |
| First End Style Designator | PLAIN |
| Second Diameter From Wrenching Feature | 0.380 INCHES NOMINAL IN |
| Concentric Hole Depth | 1.055 INCHES NOMINAL IN |
| Wrenching Feature Height | 0.430 INCHES NOMINAL IN |
| Second End Thread Series Designator | NPTF |
| First End Thread Length | 0.652 INCHES NOMINAL IN |
| Wrenching Feature Style | HEXAGON |
| Material Document and Classification | QQ-N-281,CL A,FORM 1 FED SPEC SINGLE MATERIAL RESPONSE |
| Second End Thread Direction | RIGHT-HAND |
| Length From Bearing Surface of Wrenching Feature to End of Second Diameter | 1.830 INCHES NOMINAL IN |
| Second End Style Designator | PLAIN |
| Length From Bearing Surface of Wrenching Feature to Bolt End | 2.070 INCHES NOMINAL IN |
| First End Connection Type | THREADED EXTERNAL TUBE |
| Concentric Hole Diameter | 0.060 INCHES NOMINAL IN |
| First Radial Fluid Hole Diameter | 0.060 INCHES NOMINAL IN |
| Distance From First Radial Hole Center to End of Bolt | 1.445 INCHES NOMINAL IN |
| Material | COPPER ALLOY |
| Second End Thread Length | 1.130 INCHES NOMINAL IN |
| Second End Connection Type | THREADED INTERNAL PIPE |
| First Diameter From Wrenching Feature | 0.742 INCHES NOMINAL IN |
| First End Nominal Thread Size | 0.500 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 |
|---|---|
| 87539-3702 | 3/2 Design control — primary reference U.S. Government activity |
| 600-4789161 ITEM 9 | 5/2 Secondary reference U.S. Government activity |
NSN 4730-01-153-1428 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): 3950-01-211-5333, 3950-01-211-5334. Verify interchangeability with system specifications before substitution.
Key specifications for 4730-01-153-1428: First End Thread Series Designator: UNIFIED NATIONAL COARSE (UNC); Width Across Flats: 1.125 INCHES NOMINAL IN; First End Thread Direction: RIGHT-HAND; Second End Nominal Thread Size: 0.125 INCHES IN. 28 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.