The Bolt,fluid Passage, cataloged under National Stock Number 4730-01-375-6310, 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 Kraft Power Corp. Government technical data includes 23 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-375-6310 |
| Primary Part Number | 370850 |
| Item Name | Bolt,fluid Passage |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Kraft Power Corp |
| Status | ACTIVE |
| First End Thread Series Designator | ISO M |
| Width Across Flats | 15.5 MILLIMETERS MINIMUM AND 15.8 MILLIMETERS MAXIMUM MM |
| First End Thread Direction | RIGHT-HAND |
| Second End Nominal Thread Size | 8.0 MILLIMETERS MM |
| Body Style | PLAIN |
| First End Style Designator | PLAIN |
| Wrenching Feature Height | 4.4 MILLIMETERS NOMINAL MM |
| Second End Thread Series Designator | ISO M |
| First End Thread Length | 13.0 MILLIMETERS NOMINAL MM |
| Wrenching Feature Style | HEXAGON |
| Second End Thread Direction | RIGHT-HAND |
| Second End Thread Pitch in Millimeters | 1.25 |
| Second End Style Designator | GASKET SEAL |
| Length From Bearing Surface of Wrenching Feature to Bolt End | 28.6 MILLIMETERS NOMINAL MM |
| First End Thread Pitch in Millimeters | 1.50 |
| First End Connection Type | THREADED EXTERNAL PIPE |
| Concentric Hole Diameter | 6.8 MILLIMETERS NOMINAL MM |
| Surface Treatment | ZINC |
| Distance From First Radial Hole Center to End of Bolt | 20.0 MILLIMETERS NOMINAL MM |
| Material | STEEL |
| Distance From Second Radial Hole Center to End of Bolt | 13.0 MILLIMETERS NOMINAL MM |
| Second End Thread Length | 10.0 MILLIMETERS NOMINAL MM |
| First End Nominal Thread Size | 12.0 MILLIMETERS MM |
| 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 |
|---|---|
| 370850 | Kraft Power Corp (USA) |
| Reference | Meaning |
|---|---|
| 212888-1 | 5/9 Secondary reference Walker Power Systems, Inc. Dba Tiernay Turbines |
| 370850 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4730-01-375-6310 is a Bolt,fluid Passage, manufactured by Kraft Power Corp, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-375-6310 has 1 manufacturer part number on file: 370850 (Kraft Power Corp).
Key specifications for 370850: First End Thread Series Designator: ISO M; Width Across Flats: 15.5 MILLIMETERS MINIMUM AND 15.8 MILLIMETERS MAXIMUM MM; First End Thread Direction: RIGHT-HAND; Second End Nominal Thread Size: 8.0 MILLIMETERS MM. 23 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.