The Bolt,fluid Passage, cataloged under National Stock Number 4730-01-129-5591, 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 Defense. Government technical data includes 26 specifications, cited from the U.S. Government catalog. The record lists 6 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-129-5591 |
| Primary Part Number | 74A411578-2001 |
| Item Name | Bolt,fluid Passage |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| First End Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Width Across Flats | 0.562 INCHES NOMINAL IN |
| First End Thread Direction | RIGHT-HAND |
| Length From Bearing Surface of Wrenching Feature to End of First Diameter | 0.099 INCHES NOMINAL IN |
| Third Diameter From Wrenching Feature | 0.420 INCHES NOMINAL IN |
| Body Style | RELIEVED |
| First End Thread Class | 3A A |
| First End Style Designator | EXTERNAL SEAT FOR GASKET SEAL (BOSS) |
| Length From Bearing Surface of Wrenching Feature to End of Third Diameter | 0.534 INCHES NOMINAL IN |
| Second Diameter From Wrenching Feature | 0.310 INCHES NOMINAL IN |
| Concentric Hole Depth | 0.857 INCHES NOMINAL IN |
| Wrenching Feature Height | 0.100 INCHES NOMINAL IN |
| First End Thread Length | 0.133 INCHES NOMINAL IN |
| Wrenching Feature Style | HEXAGON |
| Material Document and Classification | AMS 6931 ASSN STD 1ST MATERIAL RESPONSE AND AMS 4928Q ASSN STD 2ND MATERIAL RESPONSE OR MIL-T-9047,TY III,COMP A MIL SPEC SINGLE MATERIAL RESPONSE |
| Length From Bearing Surface of Wrenching Feature to End of Second Diameter | 0.340 INCHES NOMINAL IN |
| Length From Bearing Surface of Wrenching Feature to Bolt End | 1.297 INCHES NOMINAL IN |
| First End Connection Type | THREADED EXTERNAL BOSS |
| Concentric Hole Diameter | 0.125 INCHES NOMINAL IN |
| First Radial Fluid Hole Diameter | 0.125 INCHES NOMINAL IN |
| Length From Bearing Surface of Wrenching Feature to End of Fourth Diameter | 0.734 INCHES NOMINAL IN |
| Distance From First Radial Hole Center to End of Bolt | 0.806 INCHES NOMINAL IN |
| Material | TITANIUM ALLOY |
| First Diameter From Wrenching Feature | 0.420 INCHES NOMINAL IN |
| First End Nominal Thread Size | 0.312 INCHES IN |
| Fourth Diameter From Wrenching Feature | 0.310 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 |
|---|---|
| 74A411578-2001 | Circor Aerospace, Inc. Div Circor (USA) |
| 74A411578-2001 | The Boeing Company Div Services (USA) |
| 74A411578-2001 | Israel Aerospace Industries Ltd.shl-Aero Assemblies Division (ISR) |
| 74A411578-2001 | Safran Landing Systems Canada Inc. (CAN) |
| 74A411578-2001 PRIMARY | The Boeing Company Div Defense (USA) |
| 74A411578-2001 | Nassau Tool Works, Inc (USA) |
| Reference | Meaning |
|---|---|
| 74A411578-2001 | 5/9 Secondary reference Israel Aerospace Industries Ltd. Shl - Aero Assemblies Division |
| 74A411578 | D/9 Drawing number reference only The Boeing Company Div Defense |
| 74A411578-2001 | 5/2 Secondary reference U.S. Government activity |
| 74A411578-2001 | 5/9 Secondary reference All Tools, Inc. Dba E2 Precision Products |
| 10108672 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| 74A411578-2001 | 5/9 Secondary reference Circor Aerospace, Inc. Dba Circor Aerospace Machining Center |
NSN 4730-01-129-5591 is a Bolt,fluid Passage, manufactured by The Boeing Company Div Defense, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-129-5591 has 6 manufacturer part numbers on file: 74A411578-2001 (Circor Aerospace, Inc. Div Circor), 74A411578-2001 (The Boeing Company Div Services), 74A411578-2001 (Israel Aerospace Industries Ltd.shl-Aero Assemblies Division), 74A411578-2001 (Safran Landing Systems Canada Inc.), 74A411578-2001 (The Boeing Company Div Defense) and 1 more.
Key specifications for 74A411578-2001: First End Thread Series Designator: UNIFIED NATIONAL JOINT FINE (UNJF); Width Across Flats: 0.562 INCHES NOMINAL IN; First End Thread Direction: RIGHT-HAND; Length From Bearing Surface of Wrenching Feature to End of First Diameter: 0.099 INCHES NOMINAL IN. 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.