The Bolt,fluid Passage, cataloged under National Stock Number 4730-00-167-4149, 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 Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.. Government technical data includes 25 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4730-00-167-4149 |
| Primary Part Number | 39491 |
| Item Name | Bolt,fluid Passage |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp. |
| Status | ACTIVE |
| First End Thread Series Designator | UNF |
| First End Thread Direction | RIGHT-HAND |
| Length From Bearing Surface of Wrenching Feature to End of First Diameter | 0.063 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | 81343-AMS 2400 ASSN STD SINGLE TREATMENT RESPONSE |
| Body Style | STEPPED |
| First End Thread Class | 3A A |
| First End Thread Quantity Per Inch | 24 |
| First End Style Designator | PLAIN |
| Second Diameter From Wrenching Feature | 0.234 INCHES NOMINAL IN |
| Concentric Hole Depth | 0.875 INCHES NOMINAL IN |
| Wrenching Feature Height | 0.187 INCHES NOMINAL IN |
| First End Thread Length | 0.625 INCHES NOMINAL IN |
| Wrenching Feature Style | ROUND |
| Material Document and Classification | 81343-AMS 6322 ASSN STD SINGLE MATERIAL RESPONSE |
| Length From Bearing Surface of Wrenching Feature to End of Second Diameter | 0.312 INCHES NOMINAL IN |
| Length From Bearing Surface of Wrenching Feature to Bolt End | 1.000 INCHES NOMINAL IN |
| First End Connection Type | THREADED EXTERNAL TUBE |
| Concentric Hole Diameter | 0.093 INCHES NOMINAL IN |
| Surface Treatment | CADMIUM |
| First Radial Fluid Hole Diameter | 0.040 INCHES NOMINAL IN |
| Distance From First Radial Hole Center to End of Bolt | 0.812 INCHES NOMINAL IN |
| Material | STEEL |
| First Diameter From Wrenching Feature | 0.312 INCHES NOMINAL IN |
| First End Nominal Thread Size | 0.312 INCHES IN |
| Head Diameter | 0.500 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 |
|---|---|
| 39491 PRIMARY | Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp. (CAN) |
| Reference | Meaning |
|---|---|
| 39491 | 5/9 Secondary reference Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
NSN 4730-00-167-4149 is a Bolt,fluid Passage, manufactured by Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp., classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-167-4149 has 1 manufacturer part number on file: 39491 (Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.).
2 possible matches (shared part number, not a government interchangeability claim): 3110-01-051-9668, 3110-01-303-2682. Verify interchangeability with system specifications before substitution.
Key specifications for 39491: First End Thread Series Designator: UNF; First End Thread Direction: RIGHT-HAND; Length From Bearing Surface of Wrenching Feature to End of First Diameter: 0.063 INCHES NOMINAL IN; Surface Treatment Document and Classification: 81343-AMS 2400 ASSN STD SINGLE TREATMENT RESPONSE. 25 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.