The Bolt,fluid Passage, cataloged under National Stock Number 4730-01-312-1896, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 19 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4730-01-312-1896 |
| Primary Part Number | 803-5959174 PC 56 |
| Item Name | Bolt,fluid Passage |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| First End Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Width Across Flats | 1.100 INCHES MINIMUM AND 1.125 INCHES MAXIMUM IN |
| First End Thread Direction | RIGHT-HAND |
| Length From Bearing Surface of Wrenching Feature to End of First Diameter | 0.250 INCHES NOMINAL IN |
| Body Style | PLAIN |
| First End Thread Class | 2A A |
| First End Style Designator | PLAIN |
| Concentric Hole Depth | 3.875 INCHES NOMINAL IN |
| Wrenching Feature Height | 0.625 INCHES NOMINAL IN |
| First End Thread Length | 0.937 INCHES NOMINAL IN |
| Wrenching Feature Style | HEXAGON |
| Length From Bearing Surface of Wrenching Feature to Bolt End | 4.875 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 | 3.750 INCHES NOMINAL IN |
| Material | STEEL CORROSION RESISTING |
| First Diameter From Wrenching Feature | 0.997 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN |
| First End Nominal Thread Size | 0.875 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 |
| Part Number | Manufacturer |
|---|---|
| 803-5959174 PC 56 PRIMARY | Naval Sea Systems Command (USA) |
| 803-5959182 PC 56 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 803-5959174 | D/9 Drawing number reference only Naval Sea Systems Command |
| 803-5959182 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 4730-01-312-1896 is a Bolt,fluid Passage, manufactured by Naval Sea Systems Command, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-312-1896 has 2 manufacturer part numbers on file: 803-5959174 PC 56 (Naval Sea Systems Command), 803-5959182 PC 56 (Naval Sea Systems Command).
2 possible matches (shared part number, not a government interchangeability claim): 2040-01-358-1557, 2040-01-359-5636. Verify interchangeability with system specifications before substitution.
Key specifications for 803-5959174 PC 56: First End Thread Series Designator: UNIFIED NATIONAL COARSE (UNC); Width Across Flats: 1.100 INCHES MINIMUM AND 1.125 INCHES MAXIMUM IN; First End Thread Direction: RIGHT-HAND; Length From Bearing Surface of Wrenching Feature to End of First Diameter: 0.250 INCHES NOMINAL IN. 19 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.