The Bolt,fluid Passage, cataloged under National Stock Number 4730-00-238-3549, 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 The Boeing Company Div Legacy Am&m. Government technical data includes 29 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-238-3549 |
| Primary Part Number | 151-34374 |
| Item Name | Bolt,fluid Passage |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | The Boeing Company Div Legacy Am&m |
| Status | ACTIVE |
| First End Thread Series Designator | UNF |
| 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 | 2.281 INCHES NOMINAL IN |
| Second End Thread Class | 2B |
| Body Style | SHOULDER |
| First End Thread Class | 3A A |
| Cotter Pin Hole Diameter | 0.106 INCHES NOMINAL IN |
| First End Style Designator | PLAIN |
| Second Diameter From Wrenching Feature | 0.312 INCHES NOMINAL IN |
| Concentric Hole Depth | 2.438 INCHES NOMINAL IN |
| Wrenching Feature Height | 0.078 INCHES NOMINAL IN |
| Second End Thread Series Designator | UNF |
| Hardness Rating | 31.0 ROCKWELL C MINIMUM AND 36.0 ROCKWELL C MAXIMUM |
| First End Thread Length | 0.406 INCHES NOMINAL IN |
| Wrenching Feature Style | ROUND |
| Material Document and Classification | MIL-A-6758 MIL SPEC SINGLE MATERIAL RESPONSE |
| Second End Thread Direction | RIGHT-HAND |
| Length From Bearing Surface of Wrenching Feature to End of Second Diameter | 2.375 INCHES NOMINAL IN |
| Second End Style Designator | GASKET SEAL |
| Length From Bearing Surface of Wrenching Feature to Bolt End | 2.703 INCHES NOMINAL IN |
| First End Connection Type | THREADED EXTERNAL TUBE |
| Concentric Hole Diameter | 0.062 INCHES NOMINAL IN |
| Distance From Bolt End to Hole Center | 0.250 INCHES NOMINAL IN |
| Surface Treatment | CHROMIUM |
| First Radial Fluid Hole Diameter | 0.062 INCHES NOMINAL IN |
| Distance From First Radial Hole Center to End of Bolt | 0.374 INCHES NOMINAL IN |
| Material | STEEL COMP 4130 |
| Second End Thread Length | 0.125 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 |
| Part Number | Manufacturer |
|---|---|
| 151-34374 PRIMARY | The Boeing Company Div Legacy Am&m (USA) |
NSN 4730-00-238-3549 is a Bolt,fluid Passage, manufactured by The Boeing Company Div Legacy Am&m, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-238-3549 has 1 manufacturer part number on file: 151-34374 (The Boeing Company Div Legacy Am&m).
Key specifications for 151-34374: First End Thread Series Designator: UNF; 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: 2.281 INCHES NOMINAL 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.