The Stop,mechanical, cataloged under National Stock Number 5340-01-656-1258, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Birdon America Inc. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active. Unit of issue: EA.
| Item Name | Stop,mechanical |
| FSC / FSG | 5340 — Hardware, Commercial (FSG 53) |
| Manufacturers | Birdon America Inc (CAGE 6KT72) |
| Parameter | Value |
|---|---|
| NSN | 5340-01-656-1258 |
| Primary Part Number | 12595058 |
| Item Name | Stop,mechanical |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Birdon America Inc |
| Status | ACTIVE |
| 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 |
|---|---|
| 12595058 PRIMARY | Birdon America Inc (USA) |
| Reference | Meaning |
|---|---|
| 12595513 | D/9 Drawing number reference only Birdon America Inc |
NSN 5340-01-656-1258 is a Stop,mechanical, manufactured by Birdon America Inc, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-656-1258 has 1 manufacturer part number on file: 12595058 (Birdon America Inc).
1 possible match (shared part number, not a government interchangeability claim): 5340-01-656-1312. 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.
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.