The Packing Nut, cataloged under National Stock Number 4730-00-830-5171, 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 Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems. Government technical data includes 12 specifications, cited from the U.S. Government catalog. The record lists 6 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-830-5171 |
| Primary Part Number | 9756-48 |
| Item Name | Packing Nut |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems |
| Status | ACTIVE |
| Hole or Slot Quantity | 4 |
| Thread Length | 0.500 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND |
| Casehardening Indicator | NOT CASEHARDENED |
| Thread Size | 27/8-16 |
| Screw Thread Series Designator | UN |
| Thread Class | 3B |
| Major Unthreaded Outside Diameter | 3.120 INCHES NOMINAL IN |
| Screw Thread Location | INTERNAL |
| Material | ALUMINUM ALLOY 2024 |
| Slot Width | 0.310 INCHES NOMINAL IN |
| Smallest Inside Diameter | 2.330 INCHES MINIMUM AND 3.340 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 | X |
| Part Number | Manufacturer |
|---|---|
| 9756-48 | Air Craftors Engineering, Inc. (USA) |
| 9756-48 | Cnc Precision Machine, Llc (USA) |
| 9756-48 | Goodrich Corporation (USA) |
| 9756-48 | Cnc Precision Machining, Llc (USA) |
| 9756-48 PRIMARY | Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems (USA) |
| 9756-48 | Eagle Tool & Machine Co., Inc. (USA) |
| Reference | Meaning |
|---|---|
| 9756-48 | 5/9 Secondary reference Goodrich Corporation Div Advanced Structures Landing Systems |
| 9756-48 | 5/1 Secondary reference Northrop Grumman Technical Services, Inc. Dba Defense Systems Sector |
NSN 4730-00-830-5171 is a Packing Nut, manufactured by Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-830-5171 has 6 manufacturer part numbers on file: 9756-48 (Air Craftors Engineering, Inc.), 9756-48 (Cnc Precision Machine, Llc), 9756-48 (Goodrich Corporation), 9756-48 (Cnc Precision Machining, Llc), 9756-48 (Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems) and 1 more.
Key specifications for 9756-48: Hole or Slot Quantity: 4; Thread Length: 0.500 INCHES NOMINAL IN; Overall Length: 0.750 INCHES NOMINAL IN; Thread Direction: RIGHT-HAND. 12 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.