The Gear Block Assy, cataloged under National Stock Number 6605-00-522-4535, is classified within Federal Supply Class 6605 (Navigational Instruments) of the Instruments and Laboratory Equipment group. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Gear Block Assy |
| FSC / FSG | 6605 — Navigational Instruments (FSG 66) |
| Parameter | Value |
|---|---|
| NSN | 6605-00-522-4535 |
| Item Name | Gear Block Assy |
| FSC / FSG | 6605 / 66 — Navigational Instruments |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Reference | Meaning |
|---|---|
| 450-2284 | 3/2 Design control — primary reference U.S. Government activity |
| 210-3300 | 5/9 Secondary reference U.S. Government activity |
NSN 6605-00-522-4535 is a Gear Block Assy, classified under FSC 6605, Navigational Instruments. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 4420-01-484-9081, 1650-01-542-0119. Verify interchangeability with system specifications before substitution.
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
NSN 6605-00-522-4535 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.