The Z-Ring, cataloged under National Stock Number 1680-01-254-5151, is classified within Federal Supply Class 1680 (Miscellaneous Aircraft Accessories and Components) of the Aircraft Components and Accessories group. The manufacturer of record is Hadco Engineering Inc. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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.
| Item Name | Z-Ring |
| FSC / FSG | 1680 — Miscellaneous Aircraft Accessories and Components (FSG 16) |
| Manufacturers | Hadco Engineering Inc (CAGE 0K9M4) |
| Parameter | Value |
|---|---|
| NSN | 1680-01-254-5151 |
| Primary Part Number | 516033 |
| Item Name | Z-Ring |
| FSC / FSG | 1680 / 16 — Miscellaneous Aircraft Accessories and Components |
| Manufacturer | Hadco Engineering Inc |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| 516033 PRIMARY | Hadco Engineering Inc (USA) |
| Reference | Meaning |
|---|---|
| 516033 | 5/9 Secondary reference Axeline Industries Inc |
NSN 1680-01-254-5151 is a Z-Ring, manufactured by Hadco Engineering Inc, classified under FSC 1680, Miscellaneous Aircraft Accessories and Components. Status: active.
NSN 1680-01-254-5151 has 1 manufacturer part number on file: 516033 (Hadco Engineering Inc).
1 possible match (shared part number, not a government interchangeability claim): 6220-01-517-5880. Verify interchangeability with system specifications before substitution.
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 1680-01-254-5151 has DEMIL Code B. 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.