The Drum Spring, cataloged under National Stock Number 1680-01-198-4825, is classified within Federal Supply Class 1680 (Miscellaneous Aircraft Accessories and Components) of the Aircraft Components and Accessories group. The manufacturer of record is Lowell, Inc.. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 1680-01-198-4825 |
| Primary Part Number | 172B5221P1 |
| Item Name | Drum Spring |
| FSC / FSG | 1680 / 16 — Miscellaneous Aircraft Accessories and Components |
| Manufacturer | Lowell, Inc. |
| Status | ACTIVE |
| General Characteristics Item Description | ALUMINUM ALLOY PER QQ-A-225/8 TEMP T651 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 172B5221P1 | Lowell, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 172B5221P1 | 5/9 Secondary reference United Machine and Tool Co Inc an Independently Owned and Operated Business |
| 172B5221P1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 1680-01-198-4825 is a Drum Spring, manufactured by Lowell, Inc., classified under FSC 1680, Miscellaneous Aircraft Accessories and Components. Status: active.
NSN 1680-01-198-4825 has 1 manufacturer part number on file: 172B5221P1 (Lowell, Inc.).
Key specifications for 172B5221P1: General Characteristics Item Description: ALUMINUM ALLOY PER QQ-A-225/8 TEMP T651; End Item Identification: B-1B ACFT. 1 specification is 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 1680-01-198-4825 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.