The Bolt,fluid Passage, cataloged under National Stock Number 4730-01-377-3208, 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 28 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-377-3208 |
| Item Name | Bolt,fluid Passage |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| First End Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Width Across Flats | 0.934 INCHES NOMINAL IN |
| First End Thread Direction | RIGHT-HAND |
| Second End Nominal Thread Size | 0.250 INCHES IN |
| Length From Bearing Surface of Wrenching Feature to End of First Diameter | 1.363 INCHES NOMINAL IN |
| Second End Thread Class | 3B |
| Body Style | SHOULDER |
| First End Thread Class | 3A A |
| Cotter Pin Hole Diameter | 0.110 INCHES NOMINAL IN |
| First End Style Designator | PLAIN |
| Second Diameter From Wrenching Feature | 0.316 INCHES NOMINAL IN |
| Concentric Hole Depth | 1.403 INCHES NOMINAL IN |
| Wrenching Feature Height | 0.319 INCHES NOMINAL IN |
| Second End Thread Series Designator | UNF |
| First End Thread Length | 0.508 INCHES NOMINAL IN |
| Wrenching Feature Style | HEXAGON |
| Material Document and Classification | AMS 5662 ASSN STD SINGLE MATERIAL RESPONSE |
| Second End Thread Direction | RIGHT-HAND |
| Length From Bearing Surface of Wrenching Feature to End of Second Diameter | 1.483 INCHES NOMINAL IN |
| First End Connection Type | THREADED EXTERNAL TUBE |
| Concentric Hole Diameter | 0.110 INCHES NOMINAL IN |
| Distance From Bolt End to Hole Center | 0.236 INCHES NOMINAL IN |
| First Radial Fluid Hole Diameter | 0.110 INCHES NOMINAL IN |
| Distance From First Radial Hole Center to End of Bolt | 0.897 INCHES NOMINAL IN |
| Material | NICKEL ALLOY |
| Second End Connection Type | THREADED EXTERNAL TUBE |
| First Diameter From Wrenching Feature | 0.623 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 |
| Reference | Meaning |
|---|---|
| 17P6W8247 | D/9 Drawing number reference only U.S. Government activity |
| 17P6W8247-3 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4730-01-377-3208 is a Bolt,fluid Passage, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
5 possible matches (shared part number, not a government interchangeability claim): 4730-01-466-7450, 4730-01-466-7452, 4730-01-466-7453. Verify interchangeability with system specifications before substitution.
Key specifications for 4730-01-377-3208: First End Thread Series Designator: UNIFIED NATIONAL JOINT FINE (UNJF); Width Across Flats: 0.934 INCHES NOMINAL IN; First End Thread Direction: RIGHT-HAND; Second End Nominal Thread Size: 0.250 INCHES IN. 28 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.