The Lift Block Assembly, cataloged under National Stock Number 1680-01-442-0538, is classified within Federal Supply Class 1680 (Miscellaneous Aircraft Accessories and Components) of the Aircraft Components and Accessories group. The manufacturer of record is Grimes Aerospace Company. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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.
| Parameter | Value |
|---|---|
| NSN | 1680-01-442-0538 |
| Primary Part Number | 90-0330-5 |
| Item Name | Lift Block Assembly |
| FSC / FSG | 1680 / 16 — Miscellaneous Aircraft Accessories and Components |
| Manufacturer | Grimes Aerospace Company |
| Status | ACTIVE |
| 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 |
|---|---|
| 90-0330-5 PRIMARY | Grimes Aerospace Company (USA) |
| Reference | Meaning |
|---|---|
| 17B1N1003-501 | 5/2 Secondary reference U.S. Government activity |
NSN 1680-01-442-0538 is a Lift Block Assembly, manufactured by Grimes Aerospace Company, classified under FSC 1680, Miscellaneous Aircraft Accessories and Components. Status: active.
NSN 1680-01-442-0538 has 1 manufacturer part number on file: 90-0330-5 (Grimes Aerospace Company).
1 possible match (shared part number, not a government interchangeability claim): 5998-01-464-2697. Verify interchangeability with system specifications before substitution.
Key specifications for 90-0330-5: End Item Identification: C-17A AIRCRAFT A. 0 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.