The Plug,expansion, cataloged under National Stock Number 5340-01-358-5677, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Sae International Dba Sae International. Government technical data includes 6 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-358-5677 |
| Primary Part Number | AS3123-57 |
| Item Name | Plug,expansion |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Sae International Dba Sae International |
| Status | ACTIVE |
| Outside Diameter | 0.2903 INCHES MINIMUM AND 0.2912 INCHES MAXIMUM IN |
| Style Designator | CUP |
| Material Document and Classification | ALLOY 2024, T4 NATIONAL SPEC SINGLE MATERIAL RESPONSE |
| Material Thickness | 0.0251 INCHES NOMINAL IN |
| Height | 0.2480 INCHES MINIMUM AND 0.2620 INCHES MAXIMUM IN |
| Material | ALUMINUM ALLOY 2024 |
| 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 |
|---|---|
| AS3123-57 | General Electric Company (USA) |
| AS3123-57 PRIMARY | Sae International Dba Sae International (USA) |
| Reference | Meaning |
|---|---|
| SAE-AS3123 | 5/1 Secondary reference Sae International Dba Sae International |
| AS3123-57 | 5/9 Secondary reference U.S. Government activity |
| PLGA2915010A | 3/2 Design control — primary reference U.S. Government activity |
| PLGA2915010 | 5/9 Secondary reference U.S. Government activity |
NSN 5340-01-358-5677 is a Plug,expansion, manufactured by Sae International Dba Sae International, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-358-5677 has 2 manufacturer part numbers on file: AS3123-57 (General Electric Company), AS3123-57 (Sae International Dba Sae International).
2 possible matches (shared part number, not a government interchangeability claim): 5340-01-358-5678, 5340-01-418-6728. Verify interchangeability with system specifications before substitution.
Key specifications for AS3123-57: Outside Diameter: 0.2903 INCHES MINIMUM AND 0.2912 INCHES MAXIMUM IN; Style Designator: CUP; Material Document and Classification: ALLOY 2024, T4 NATIONAL SPEC SINGLE MATERIAL RESPONSE; Material Thickness: 0.0251 INCHES NOMINAL IN. 6 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.