The Bolt,fluid Passage, cataloged under National Stock Number 4730-00-720-1044, 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 Danfoss Power Solutions II, Llc. Government technical data includes 29 specifications, cited from the U.S. Government catalog. The record lists 5 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-720-1044 |
| Primary Part Number | ER01781 |
| Item Name | Bolt,fluid Passage |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Danfoss Power Solutions II, Llc |
| Status | ACTIVE |
| First End Thread Series Designator | UNF |
| Width Across Flats | 0.875 INCHES NOMINAL IN |
| First End Thread Direction | RIGHT-HAND |
| Second End Thread Quantity Per Inch | 18 |
| Second End Nominal Thread Size | 0.562 INCHES IN |
| Length From Bearing Surface of Wrenching Feature to End of First Diameter | 0.065 INCHES NOMINAL IN |
| Second End Thread Class | 3A A |
| Third Diameter From Wrenching Feature | 0.434 INCHES NOMINAL IN |
| Body Style | BODY WRENCHING |
| First End Thread Class | 3A A |
| First End Thread Quantity Per Inch | 20 |
| First End Style Designator | PLAIN |
| Length From Bearing Surface of Wrenching Feature to End of Third Diameter | 0.687 INCHES NOMINAL IN |
| Second Diameter From Wrenching Feature | 0.499 INCHES NOMINAL IN |
| Concentric Hole Depth | 1.600 INCHES NOMINAL IN |
| Second End Seat Angle | 12.0 DEGREES NOMINAL |
| Wrenching Feature Height | 0.248 INCHES NOMINAL IN |
| Second End Thread Series Designator | UNF |
| First End Thread Length | 0.240 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 | 0.380 INCHES NOMINAL IN |
| Second End Style Designator | FLARELESS |
| Length From Bearing Surface of Wrenching Feature to Bolt End | 1.438 INCHES NOMINAL IN |
| First End Connection Type | THREADED EXTERNAL TUBE |
| Concentric Hole Diameter | 0.386 INCHES NOMINAL IN |
| First Radial Fluid Hole Diameter | 0.185 INCHES NOMINAL IN |
| Length From Bearing Surface of Wrenching Feature to End of Fourth Diameter | 1.062 INCHES NOMINAL IN |
| Distance From First Radial Hole Center to End of Bolt | 0.875 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 |
|---|---|
| ER01781 PRIMARY | Danfoss Power Solutions II, Llc (USA) |
| 118-01781 | Designed Metal Connections Inc Dba Permaswage Usa Div Permaswage, a Pcc Company (USA) |
| 2-03500D11 PRIMARY | Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution (USA) |
| 118-01781 | Danfoss Power Solutions II, Llc (USA) |
| AFP402-11 | Aerofit, Llc (USA) |
| Reference | Meaning |
|---|---|
| 118-01781 | 5/9 Secondary reference Dana Corp Weatherhead Div |
| BACF22R11 | 3/2 Design control — primary reference U.S. Government activity |
| ER01781 | 5/9 Secondary reference Designed Metal Connections Inc Dba Permaswage Usa Div Permaswage, a Pcc Company |
| ER01781 | 5/9 Secondary reference Dana Corp Weatherhead Div |
NSN 4730-00-720-1044 is a Bolt,fluid Passage, manufactured by Danfoss Power Solutions II, Llc, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-720-1044 has 5 manufacturer part numbers on file: ER01781 (Danfoss Power Solutions II, Llc), 118-01781 (Designed Metal Connections Inc Dba Permaswage Usa Div Permaswage, a Pcc Company), 2-03500D11 (Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution), 118-01781 (Danfoss Power Solutions II, Llc), AFP402-11 (Aerofit, Llc).
Key specifications for ER01781: First End Thread Series Designator: UNF; Width Across Flats: 0.875 INCHES NOMINAL IN; First End Thread Direction: RIGHT-HAND; Second End Thread Quantity Per Inch: 18. 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.