The Bolt,fluid Passage, cataloged under National Stock Number 4730-00-974-4083, 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 Northrop Grumman Systems Corporation. Government technical data includes 20 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4730-00-974-4083 |
| Primary Part Number | 128BM10925-1 |
| Item Name | Bolt,fluid Passage |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| First End Thread Series Designator | UNF |
| 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 | 1.188 INCHES NOMINAL IN |
| Body Style | PLAIN |
| First End Thread Class | 2A A |
| First End Thread Quantity Per Inch | 24 |
| First End Style Designator | PLAIN |
| Concentric Hole Depth | 0.812 INCHES NOMINAL IN |
| Wrenching Feature Height | 0.188 INCHES NOMINAL IN |
| First End Thread Length | 0.375 INCHES NOMINAL IN |
| Wrenching Feature Style | HEXAGON |
| Length From Bearing Surface of Wrenching Feature to Bolt End | 1.594 INCHES NOMINAL IN |
| First End Connection Type | THREADED EXTERNAL TUBE |
| Concentric Hole Diameter | 0.031 INCHES NOMINAL IN |
| First Radial Fluid Hole Diameter | 0.031 INCHES NOMINAL IN |
| Distance From First Radial Hole Center to End of Bolt | 1.000 INCHES NOMINAL IN |
| Material | STEEL |
| First Diameter From Wrenching Feature | 0.375 INCHES NOMINAL 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 |
|---|---|
| 128BM10925-1 | Howe Machine & Tool Corp. Dba Howe Machine & Tool Corp (USA) |
| 128BM10925-1 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| 128BM10925-1 | 5/2 Secondary reference U.S. Government activity |
| 128BM10925-1 | 5/9 Secondary reference Northrop Grumman Systems Corporation |
NSN 4730-00-974-4083 is a Bolt,fluid Passage, manufactured by Northrop Grumman Systems Corporation, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-974-4083 has 2 manufacturer part numbers on file: 128BM10925-1 (Howe Machine & Tool Corp. Dba Howe Machine & Tool Corp), 128BM10925-1 (Northrop Grumman Systems Corporation).
Key specifications for 128BM10925-1: First End Thread Series Designator: UNF; 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: 1.188 INCHES NOMINAL IN. 20 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.