The Structural Component,aircraft Dr, cataloged under National Stock Number 1720-01-666-7564, is classified within Federal Supply Class 1720 (Aircraft Launching Equipment) of the Aircraft Launch, Landing, and Ground Handling Equipment group. The manufacturer of record is Derbyshire Machine & Tool Co. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 5 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1720-01-666-7564 |
| Primary Part Number | 628523-1L |
| Item Name | Structural Component,aircraft Dr |
| FSC / FSG | 1720 / 17 — Aircraft Launching Equipment |
| Manufacturer | Derbyshire Machine & Tool Co |
| Status | ACTIVE |
| Criticality Code Justification | CXCY |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| 628523-1L | Thomas Instrument, Incorporated (USA) |
| 628523-1L | Capy Machine Shop Inc. Dba Capy Machine Shop Inc (USA) |
| 628523-1L | The Entwistle Company Llc (USA) |
| 628523-1L | U.s.a. Spares Inc. (USA) |
| 628523-1L PRIMARY | Derbyshire Machine & Tool Co (USA) |
| Reference | Meaning |
|---|---|
| 628523-1L | 3/2 Design control — primary reference U.S. Government activity |
NSN 1720-01-666-7564 is a Structural Component,aircraft Dr, manufactured by Derbyshire Machine & Tool Co, classified under FSC 1720, Aircraft Launching Equipment. Status: active.
NSN 1720-01-666-7564 has 5 manufacturer part numbers on file: 628523-1L (Thomas Instrument, Incorporated), 628523-1L (Capy Machine Shop Inc. Dba Capy Machine Shop Inc), 628523-1L (The Entwistle Company Llc), 628523-1L (U.s.a. Spares Inc.), 628523-1L (Derbyshire Machine & Tool Co).
Key specifications for 628523-1L: Criticality Code Justification: CXCY; Part Name Assigned by Controlling Agency: STRIP GUIDE ASSEMBLY. 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 1720-01-666-7564 has DEMIL Code D. 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.