The Packing Nut, cataloged under National Stock Number 4730-01-109-4255, 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 The Boeing Company Div Defense. Government technical data includes 13 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 15 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-109-4255 |
| Primary Part Number | 74A450814-2001 |
| Item Name | Packing Nut |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Hole or Slot Quantity | 4 |
| Thread Length | 0.565 INCHES MINIMUM AND 0.703 INCHES MAXIMUM IN |
| Style Designator | ROUND SLOTTED, EXTERNAL THREAD, BOSS |
| Thread Direction | RIGHT-HAND |
| Casehardening Indicator | NOT CASEHARDENED |
| Thread Size | 5-3/4-12 |
| Screw Thread Series Designator | UNIFIED NATIONAL JOINT (UNJ) |
| Thread Class | 3A A |
| Major Unthreaded Outside Diameter | 5.615 INCHES MINIMUM AND 5.625 INCHES MAXIMUM IN |
| Screw Thread Location | EXTERNAL |
| Material | ALUMINUM ALLOY 7075 |
| Slot Width | 0.500 INCHES NOMINAL IN |
| Smallest Inside Diameter | 5.255 INCHES MINIMUM AND 5.258 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | F |
| Part Number | Manufacturer |
|---|---|
| 74A450814-2001 | Airtronics, Llc (USA) |
| 74A450814-2001 | The Boeing Company Div Services (USA) |
| 74A450814-2001 PRIMARY | The Boeing Company Div Defense (USA) |
| 74A450814-2001 | Cm Manufacturing Inc Dba Cm Manufacturing Inc (USA) |
| Reference | Meaning |
|---|---|
| 74A450814-2001 | 5/9 Secondary reference All Tools, Inc. Dba E2 Precision Products |
| 74A450814-2001 | 5/1 Secondary reference Blair Industries Inc |
| 74A450814-2001 | 5/1 Secondary reference Safran Landing Systems Canada Inc. |
| 74A450814-2001 | 5/9 Secondary reference Circor Aerospace, Inc. Dba Circor Aerospace Machining Center |
| 74A450814-2001 | 5/9 Secondary reference Goodrich Corporation Div Advanced Structures Landing Systems |
| 74A450814-2001 | 5/1 Secondary reference U.S. Government activity |
| 74A450814-2001 | C/1 Advisory reference — outside the item-of-supply concept Israel Aerospace Industries Ltd.shl-Aero Assemblies Division |
| 74A450814-2001 | 5/9 Secondary reference Israel Aerospace Industries Ltd. Shl - Aero Assemblies Division |
| 74A450814-2001 | 5/1 Secondary reference Nassau Tool Works, Inc |
| 74A450814 | D/9 Drawing number reference only The Boeing Company Div Defense |
| 10108525 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| 1958-C-167 | 5/9 Secondary reference Goodrich Corporation Div Advanced Structures Landing Systems |
| 74A450814-2001 | 5/9 Secondary reference Goodrich Corp Dba Goodrich Corp |
| 74A450814-2001 | 5/9 Secondary reference Heroux-Devtek Inc |
| 74A450814-2001 | C/1 Advisory reference — outside the item-of-supply concept Circor Aerospace, Inc. Div Circor |
NSN 4730-01-109-4255 is a Packing Nut, manufactured by The Boeing Company Div Defense, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-109-4255 has 4 manufacturer part numbers on file: 74A450814-2001 (Airtronics, Llc), 74A450814-2001 (The Boeing Company Div Services), 74A450814-2001 (The Boeing Company Div Defense), 74A450814-2001 (Cm Manufacturing Inc Dba Cm Manufacturing Inc).
Key specifications for 74A450814-2001: Hole or Slot Quantity: 4; Thread Length: 0.565 INCHES MINIMUM AND 0.703 INCHES MAXIMUM IN; Style Designator: ROUND SLOTTED, EXTERNAL THREAD, BOSS; Overall Length: 1.000 INCHES NOMINAL IN. 13 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.