The Bolt,fluid Passage, cataloged under National Stock Number 4730-01-063-9281, 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 Airtronics, Llc. Government technical data includes 14 specifications, cited from the U.S. Government catalog. The record lists 7 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 10 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-063-9281 |
| Primary Part Number | 420390-3 |
| Item Name | Bolt,fluid Passage |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Airtronics, Llc |
| Status | ACTIVE |
| First End Thread Series Designator | UNS |
| First End Thread Direction | RIGHT-HAND |
| First End Thread Class | 3A A |
| Cotter Pin Hole Diameter | 0.219 INCHES NOMINAL IN |
| First End Thread Quantity Per Inch | 16 |
| First End Thread Length | 0.687 INCHES NOMINAL IN |
| Wrenching Feature Style | ROUND |
| Material Document and Classification | QQ-N-286,CL A FED SPEC SINGLE MATERIAL RESPONSE |
| Second End Style Designator | PLAIN |
| First End Connection Type | THREADED EXTERNAL TUBE |
| Distance From Bolt End to Hole Center | 0.312 INCHES NOMINAL IN |
| Material | NICKEL ALLOY |
| First End Nominal Thread Size | 2.438 INCHES IN |
| Head Diameter | 3.250 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 | S |
| Part Number | Manufacturer |
|---|---|
| 420390-3 | Airtronics, Llc (USA) |
| 420390-3 | The Entwistle Company Llc (USA) |
| 420390-3 | Apex Manufacturing Company, Inc. Dba Apex Manufacturing Co (USA) |
| 420390-3 | Ripa Engineering Corp (USA) |
| EPA21A00-070 | Naval Group Site De Brest (FRA) |
| 420390-3 | Herley Industries Inc (USA) |
| 420390-3 | Billet Industries Inc Dba Billet Industries Inc (USA) |
| Reference | Meaning |
|---|---|
| 420390-3 | 5/9 Secondary reference Nuflo, Inc. |
| 420390-3 | 5/9 Secondary reference Penn State Tool & Die Corp |
| 420390-3 | 5/9 Secondary reference U.s.a. Spares Inc. |
| 420390-3 | 5/9 Secondary reference U.S. Government activity |
| 420390-3 | 3/2 Design control — primary reference U.S. Government activity |
| 420390-3 | 5/9 Secondary reference U.S. Government activity |
| 420390-3 | 5/9 Secondary reference Bek, Inc. Dba Level 1 Fasteners |
| 420390-3 | 5/9 Secondary reference Bec Systems Llc Dba Bec Machine Products |
| 420390-3 | 5/9 Secondary reference Duhadaway Tool & Die Shop Inc |
| 420390-3 | 5/9 Secondary reference Computa-Base-Machining, Inc. |
NSN 4730-01-063-9281 is a Bolt,fluid Passage, manufactured by Airtronics, Llc, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-063-9281 has 7 manufacturer part numbers on file: 420390-3 (Airtronics, Llc), 420390-3 (The Entwistle Company Llc), 420390-3 (Apex Manufacturing Company, Inc. Dba Apex Manufacturing Co), 420390-3 (Ripa Engineering Corp), EPA21A00-070 (Naval Group Site De Brest) and 2 more.
Key specifications for 420390-3: First End Thread Series Designator: UNS; First End Thread Direction: RIGHT-HAND; First End Thread Class: 3A A; Cotter Pin Hole Diameter: 0.219 INCHES NOMINAL IN. 14 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.