The Bolt,fluid Passage, cataloged under National Stock Number 4730-00-177-8613, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. Government technical data includes 29 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-177-8613 |
| Item Name | Bolt,fluid Passage |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| First End Thread Series Designator | UNF |
| Width Across Flats | 0.875 INCHES NOMINAL IN |
| First End Thread Direction | RIGHT-HAND |
| Second End Nominal Thread Size | 0.562 INCHES IN |
| Length From Bearing Surface of Wrenching Feature to End of First Diameter | 0.062 INCHES NOMINAL IN |
| Second End Thread Class | 2A A |
| Third Diameter From Wrenching Feature | 0.750 INCHES NOMINAL IN |
| Body Style | BODY WRENCHING |
| First End Thread Class | 2A A |
| First End Style Designator | PLAIN |
| Length From Bearing Surface of Wrenching Feature to End of Third Diameter | 0.822 INCHES NOMINAL IN |
| Second Diameter From Wrenching Feature | 0.812 INCHES NOMINAL IN |
| Concentric Hole Depth | 2.062 INCHES NOMINAL IN |
| Second End Seat Angle | 45.0 DEGREES NOMINAL |
| Wrenching Feature Height | 0.438 INCHES NOMINAL IN |
| Second End Thread Series Designator | UNF |
| First End Thread Length | 0.312 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 | 0.375 INCHES NOMINAL IN |
| Second End Style Designator | FLARED |
| Length From Bearing Surface of Wrenching Feature to Bolt End | 1.689 INCHES NOMINAL IN |
| First End Connection Type | THREADED EXTERNAL TUBE |
| Concentric Hole Diameter | 0.295 INCHES NOMINAL IN |
| Surface Treatment | ANODIZE |
| First Radial Fluid Hole Diameter | 1.150 INCHES NOMINAL IN |
| Length From Bearing Surface of Wrenching Feature to End of Fourth Diameter | 1.220 INCHES NOMINAL IN |
| Distance From First Radial Hole Center to End of Bolt | 1.062 INCHES NOMINAL IN |
| Material | ALUMINUM |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| MS21949W6H | 2/2 Government specification standardization U.S. Government activity |
| SAE-AS4875/1 | 5/1 Secondary reference Sae International Dba Sae International |
| MS21949-6H | 5/9 Secondary reference U.S. Government activity |
NSN 4730-00-177-8613 is a Bolt,fluid Passage, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
Key specifications for 4730-00-177-8613: First End Thread Series Designator: UNF; Width Across Flats: 0.875 INCHES NOMINAL IN; First End Thread Direction: RIGHT-HAND; Second End Nominal Thread Size: 0.562 INCHES IN. 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.