The Cup,locking,disk Retaining Nut, cataloged under National Stock Number 2840-00-441-9046, is classified within Federal Supply Class 2840 (Gas Turbines and Jet Engines, Aircraft, Prime Moving; and Components) of the Engines, Turbines, and Components group. The manufacturer of record is Numet Acquisition Aerocision, Inc.. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 2 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 2840-00-441-9046 |
| Primary Part Number | 2-141-221-01 |
| Item Name | Cup,locking,disk Retaining Nut |
| FSC / FSG | 2840 / 28 — Gas Turbines and Jet Engines, Aircraft, Prime Moving; and Components |
| Manufacturer | Numet Acquisition Aerocision, Inc. |
| Status | ACTIVE |
| General Characteristics Item Description | STEEL,AMS6381,ROCKWELL C SCALE 26 MIN,32 MAX HARDNESS,BLACK OXIDE FINISH,AMS2485,0.850 IN. NOM O/A LG,2.810 IN. MIN,2.820 IN. MAX OD,2.760 IN. MIN,2.770 IN. MAX ID,INTERNALFLANGE,2 INTERNAL KEYS ON FLANGE ID,0.310 IN. MIN,0.315 IN. MAX WKEY,0.088 IN. MIN,0.090 IN. MAX H KEY IN |
| Criticality Code Justification | FEAT |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | F |
| Part Number | Manufacturer |
|---|---|
| 2-141-221-01 | Numet Acquisition Aerocision, Inc. (USA) |
| 2-141-221-01 | Honeywell International Inc. Dba Honeywell International (USA) |
| Reference | Meaning |
|---|---|
| 2-141-221-01 | 3/2 Design control — primary reference U.S. Government activity |
| 2-141-221-01 | 5/9 Secondary reference B&n Aerospace, Inc. |
NSN 2840-00-441-9046 is a Cup,locking,disk Retaining Nut, manufactured by Numet Acquisition Aerocision, Inc., classified under FSC 2840, Gas Turbines and Jet Engines, Aircraft, Prime Moving; and Components. Status: active.
NSN 2840-00-441-9046 has 2 manufacturer part numbers on file: 2-141-221-01 (Numet Acquisition Aerocision, Inc.), 2-141-221-01 (Honeywell International Inc. Dba Honeywell International).
Key specifications for 2-141-221-01: General Characteristics Item Description: STEEL,AMS6381,ROCKWELL C SCALE 26 MIN,32 MAX HARDNESS,BLACK OXIDE FINISH,AMS2485,0.850 IN. NOM O/A LG,2.810 IN. MIN,2.820 IN. MAX OD,2.760 IN. MIN,2.770 IN. MAX ID,INTERNALFLANGE,2 INTERNAL KEYS ON FLANGE ID,0.310 IN. MIN,0.315 IN. MAX WKEY,0.088 IN. MIN,0.090 IN. MAX H KEY IN; Criticality Code Justification: FEAT; Special Features: THE ITEM IS A FLIGHT SAFETY CRITICAL AIRCRAFT PART (FSCAP).; End Item Identification: T-55ENGINE. 2 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.
NSN 2840-00-441-9046 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.