The Lock,flush, cataloged under National Stock Number 5340-00-264-7590, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. Government technical data includes 8 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5340-00-264-7590 |
| Item Name | Lock,flush |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Status | ACTIVE |
| Design Type | DEAD BOLT |
| Key Change Quantity | 1200 |
| Nondefinitive Spec/std Data | B TYPE |
| Surface Treatment | NICKEL CASE |
| Material | COPPER ALLOY CASE |
| Backset Depth | 0.625 INCHES NOMINAL IN |
| Operation Method | OUTSIDE KEY DEAD BOLT |
| Thickness | 0.750 INCHES MINIMUM MEMBER IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| MILL2898BTYPEA | 5/9 Secondary reference U.S. Government activity |
| MIL-L-2898 TY A | 4/1 Identification reference U.S. Government activity |
NSN 5340-00-264-7590 is a Lock,flush, classified under FSC 5340, Hardware, Commercial. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 5340-00-264-7591. Verify interchangeability with system specifications before substitution.
Key specifications for 5340-00-264-7590: Design Type: DEAD BOLT; Key Change Quantity: 1200; Nondefinitive Spec/std Data: B TYPE; Special Features: CASE SHAPE:RECTANGULAR;LOCKING MECHANISM TYPE:LEVER TUMBLER AND PIN TUMBLER;FURNISHED MOUNTING HARDWARE:BOLTS;. 8 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). 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.