The Bolt,fluid Passage, cataloged under National Stock Number 4730-00-613-5976, 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 26 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 | 4730-00-613-5976 |
| Primary Part Number | 255-170153-11 |
| 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 |
| Width Across Flats | 0.552 INCHES MINIMUM AND 0.564 INCHES MAXIMUM IN |
| First End Thread Direction | RIGHT-HAND |
| Second End Thread Quantity Per Inch | 28 |
| Second End Nominal Thread Size | 0.250 INCHES IN |
| Length From Bearing Surface of Wrenching Feature to End of First Diameter | 1.359 INCHES MINIMUM AND 1.391 INCHES MAXIMUM IN |
| Second End Thread Class | 3B |
| Body Style | PLAIN |
| First End Thread Class | 3A A |
| First End Thread Quantity Per Inch | 24 |
| Concentric Hole Depth | 1.688 INCHES NOMINAL IN |
| Wrenching Feature Height | 0.575 INCHES NOMINAL IN |
| Second End Thread Series Designator | UNF |
| Hardness Rating | 36.0 ROCKWELL C MINIMUM AND 39.0 ROCKWELL C MAXIMUM |
| First End Thread Length | 0.641 INCHES NOMINAL IN |
| Wrenching Feature Style | HEXAGON |
| Material Document and Classification | MIL-S-5626 MIL SPEC SINGLE MATERIAL RESPONSE |
| Second End Thread Direction | RIGHT-HAND |
| Length From Bearing Surface of Wrenching Feature to Bolt End | 2.000 INCHES MINIMUM AND 2.047 INCHES MAXIMUM IN |
| Concentric Hole Diameter | 0.070 INCHES NOMINAL IN |
| First Radial Fluid Hole Diameter | 0.070 INCHES NOMINAL IN |
| Distance From First Radial Hole Center to End of Bolt | 1.360 INCHES NOMINAL IN |
| Material | STEEL COMP 4140 |
| Second End Thread Length | 0.156 INCHES NOMINAL IN |
| First Diameter From Wrenching Feature | 0.373 INCHES MINIMUM AND 0.374 INCHES MAXIMUM IN |
| First End Nominal Thread Size | 0.375 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 |
|---|---|
| 255-170153-11 PRIMARY | The Boeing Company Div Legacy Am&m (USA) |
NSN 4730-00-613-5976 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 4730-00-613-5976 has 1 manufacturer part number on file: 255-170153-11 (The Boeing Company Div Legacy Am&m).
Key specifications for 255-170153-11: First End Thread Series Designator: UNF; Width Across Flats: 0.552 INCHES MINIMUM AND 0.564 INCHES MAXIMUM IN; First End Thread Direction: RIGHT-HAND; Second End Thread Quantity Per Inch: 28. 26 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.