The Lock,flush, cataloged under National Stock Number 5340-00-809-7820, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Eastern Co Div Eberhard Manufacturing. Government technical data includes 5 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-00-809-7820 |
| Primary Part Number | 5631-52 |
| Item Name | Lock,flush |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Eastern Co Div Eberhard Manufacturing |
| Status | ACTIVE |
| Design Type | LATCH BOLT |
| Bolt Type | SINGLE BEVEL NONREVERSIBLE |
| Material | STEEL CASE |
| Operation Method | HANDLE LATCH BOLT |
| Thickness | 1.250 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 |
| Unit of Issue | EA |
| Part Number | Manufacturer |
|---|---|
| 11639470 | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| 5631-52 PRIMARY | Eastern Co Div Eberhard Manufacturing (USA) |
| Reference | Meaning |
|---|---|
| ST42D71 | 5/9 Secondary reference Lockheed Martin Corp |
| ST42D71-2 | 5/9 Secondary reference Lockheed Martin Corp |
NSN 5340-00-809-7820 is a Lock,flush, manufactured by Eastern Co Div Eberhard Manufacturing, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-00-809-7820 has 2 manufacturer part numbers on file: 11639470 (U S Army Tank Automotive Command Amsta-Im-Mm), 5631-52 (Eastern Co Div Eberhard Manufacturing).
Key specifications for 5631-52: Design Type: LATCH BOLT; Bolt Type: SINGLE BEVEL NONREVERSIBLE; Special Features: CASE SHAPE:RECTANGULAR;LOCKING MECHANISM TYPE:TURN HANDLE;MASTER KEY PROVISION:NOT INCLUDED;; Material: STEEL CASE. 5 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.