The Lock,flush, cataloged under National Stock Number 5340-01-175-9756, 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 4 specifications, cited from the U.S. Government catalog. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5340-01-175-9756 |
| Primary Part Number | AL5631-52U |
| Item Name | Lock,flush |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Eastern Co Div Eberhard Manufacturing |
| Status | ACTIVE |
| Design Type | DEAD BOLT |
| Supplementary Features | TWO DEADBOLTS,180 DEGREES TO EA OTHER,EXTENDING TO A MAX OF 93.000 IN IN |
| Operation Method | WRENCH DEAD BOLT |
| Thickness | 0.125 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 |
| Part Number | Manufacturer |
|---|---|
| AL5631-52U PRIMARY | Eastern Co Div Eberhard Manufacturing (USA) |
| Reference | Meaning |
|---|---|
| 5631L | 5/9 Secondary reference Eastern Co Div Eberhard Manufacturing |
NSN 5340-01-175-9756 is a Lock,flush, manufactured by Eastern Co Div Eberhard Manufacturing, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-175-9756 has 1 manufacturer part number on file: AL5631-52U (Eastern Co Div Eberhard Manufacturing).
Key specifications for AL5631-52U: Design Type: DEAD BOLT; Supplementary Features: TWO DEADBOLTS,180 DEGREES TO EA OTHER,EXTENDING TO A MAX OF 93.000 IN IN; Special Features: CASE MATERIAL:ANY ACCEPTABLE;CASE SURFACE TREATMENT:ANY ACCEPTABLE;CASE SHAPE:RECTANGULAR;LOCKING MECHANISM TYPE:ANY ACCEPTABLE;MASTER KEY PROVISION:NOT INCLUDED;BOLT TYPE:SINGLE BEVEL REVERSIBLE;; Operation Method: WRENCH DEAD BOLT. 4 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.