The Disk,solid,plain, cataloged under National Stock Number 5340-00-560-7856, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Lucent Technologies Inc Corporate Headquarters. 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-00-560-7856 |
| Primary Part Number | 139992 |
| Item Name | Disk,solid,plain |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Lucent Technologies Inc Corporate Headquarters |
| Status | ACTIVE |
| Machined Surface Finish | SMOOTH |
| Diameter | 0.281 INCHES NOMINAL IN |
| Material | PLASTIC POLYAMIDE NYLON |
| Thickness | 0.093 INCHES NOMINAL 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 |
|---|---|
| 139992 PRIMARY | Lucent Technologies Inc Corporate Headquarters (USA) |
| Reference | Meaning |
|---|---|
| 139992 | 5/9 Secondary reference At and T Corp |
| 139992 | 5/9 Secondary reference American Telephone and Telegraph Co |
| 139992 | 3/9 Design control — primary reference Lucent Technologies Inc Dba Federal Marketing Group |
| 139992 | 5/9 Secondary reference At and T Teletype Corp |
| 139992 | 5/9 Secondary reference Telemechanics Inc |
NSN 5340-00-560-7856 is a Disk,solid,plain, manufactured by Lucent Technologies Inc Corporate Headquarters, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-00-560-7856 has 1 manufacturer part number on file: 139992 (Lucent Technologies Inc Corporate Headquarters).
1 possible match (shared part number, not a government interchangeability claim): 6685-01-163-1121. Verify interchangeability with system specifications before substitution.
Key specifications for 139992: Machined Surface Finish: SMOOTH; Diameter: 0.281 INCHES NOMINAL IN; Material: PLASTIC POLYAMIDE NYLON; Thickness: 0.093 INCHES NOMINAL IN. 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.