The Bolt,fluid Passage, cataloged under National Stock Number 4730-01-172-0596, 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 27 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-172-0596 |
| Primary Part Number | 123-4642962 ITEM 12 |
| 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 | 1.875 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 | 3.515 INCHES NOMINAL IN |
| Body Style | SHOULDER |
| First End Thread Class | 3A A |
| First End Style Designator | PLAIN |
| Second Diameter From Wrenching Feature | 1.030 INCHES NOMINAL IN |
| Concentric Hole Depth | 2.535 INCHES NOMINAL IN |
| Wrenching Feature Height | 0.785 INCHES NOMINAL IN |
| Second End Thread Series Designator | NPT |
| First End Thread Length | 1.480 INCHES NOMINAL IN |
| Wrenching Feature Style | HEXAGON |
| Second End Thread Direction | RIGHT-HAND |
| Length From Bearing Surface of Wrenching Feature to End of Second Diameter | 3.895 INCHES NOMINAL IN |
| Second End Style Designator | PLAIN |
| Length From Bearing Surface of Wrenching Feature to Bolt End | 5.375 INCHES NOMINAL IN |
| First End Connection Type | THREADED EXTERNAL TUBE |
| Concentric Hole Diameter | 0.187 INCHES NOMINAL IN |
| First Radial Fluid Hole Diameter | 0.094 INCHES NOMINAL IN |
| Distance From First Radial Hole Center to End of Bolt | 3.625 INCHES NOMINAL IN |
| Material | NICKEL ALLOY |
| Second End Thread Length | 2.750 INCHES NOMINAL IN |
| Second End Connection Type | THREADED INTERNAL PIPE |
| First Diameter From Wrenching Feature | 1.490 INCHES NOMINAL IN |
| First End Nominal Thread Size | 1.250 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 |
|---|---|
| 123-4642962 ITEM 12 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 123-4642962 | D/9 Drawing number reference only U.S. Government activity |
| 87434-2503 ITEM | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
NSN 4730-01-172-0596 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 4730-01-172-0596 has 1 manufacturer part number on file: 123-4642962 ITEM 12 (Naval Sea Systems Command).
Key specifications for 123-4642962 ITEM 12: First End Thread Series Designator: UNIFIED NATIONAL COARSE (UNC); Width Across Flats: 1.875 INCHES NOMINAL IN; First End Thread Direction: RIGHT-HAND; Second End Nominal Thread Size: 0.125 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.