The Packing Nut, cataloged under National Stock Number 4730-00-334-9701, 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 Air Craftors Engineering, Inc.. 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-334-9701 |
| Primary Part Number | 337267-3 |
| Item Name | Packing Nut |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Air Craftors Engineering, Inc. |
| Status | ACTIVE |
| Hole or Slot Quantity | 2 |
| Thread Length | 1.185 INCHES NOMINAL IN |
| Style Designator | ROUND SLOTTED, EXTERNAL THREAD, BOSS |
| Thread Direction | RIGHT-HAND |
| Casehardening Indicator | NOT CASEHARDENED |
| Thread Size | 7.250-16 |
| Screw Thread Series Designator | UNS |
| Thread Class | 3A A |
| Major Unthreaded Outside Diameter | 7.153 INCHES NOMINAL IN |
| Screw Thread Location | EXTERNAL |
| Material | STEEL COMP 8630 |
| Slot Width | 0.500 INCHES NOMINAL IN |
| Smallest Inside Diameter | 6.299 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 | F |
| Part Number | Manufacturer |
|---|---|
| 337267-3 | Air Craftors Engineering, Inc. (USA) |
| 337267-3 | Airtronics, Llc (USA) |
| 337267-3 | Lockheed Martin Aeroparts, Inc. Dba Lockheed Martin Aeroparts Inc (USA) |
| 337267-3 | Lockheed Martin Corporation Dba Lockheed Martin Div Rotary and Mission Systems (rms) (USA) |
| Reference | Meaning |
|---|---|
| 337267-3 | 5/9 Secondary reference Lockheed Martin Services, Llc |
| 337267-3 | 5/9 Secondary reference Airborne Technologies, Inc. |
| 337267 | D/9 Drawing number reference only U.S. Government activity |
| 337267-3 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4730-00-334-9701 is a Packing Nut, manufactured by Air Craftors Engineering, Inc., classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-334-9701 has 4 manufacturer part numbers on file: 337267-3 (Air Craftors Engineering, Inc.), 337267-3 (Airtronics, Llc), 337267-3 (Lockheed Martin Aeroparts, Inc. Dba Lockheed Martin Aeroparts Inc), 337267-3 (Lockheed Martin Corporation Dba Lockheed Martin Div Rotary and Mission Systems (rms)).
1 possible match (shared part number, not a government interchangeability claim): 5815-00-340-9910. Verify interchangeability with system specifications before substitution.
Key specifications for 337267-3: Hole or Slot Quantity: 2; Thread Length: 1.185 INCHES NOMINAL IN; Style Designator: ROUND SLOTTED, EXTERNAL THREAD, BOSS; Overall Length: 1.850 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.