The Washer,flat, cataloged under National Stock Number 5310-01-166-6678, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Keysight Technologies Inc. Government technical data includes 2 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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.
| Parameter | Value |
|---|---|
| NSN | 5310-01-166-6678 |
| Primary Part Number | 3050-0006 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Keysight Technologies Inc |
| Status | ACTIVE |
| Overall Diameter | 0.500 INCHES NOMINAL IN |
| Material | FIBER OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 3050-0006 PRIMARY | Keysight Technologies Inc (USA) |
| Reference | Meaning |
|---|---|
| 3050-0006 | 3/9 Design control — primary reference Keysight Technologies, Inc. |
| 3050-0006 | 5/9 Secondary reference Hewlett-Packard Company Dba HP |
NSN 5310-01-166-6678 is a Washer,flat, manufactured by Keysight Technologies Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-166-6678 has 1 manufacturer part number on file: 3050-0006 (Keysight Technologies Inc).
1 possible match (shared part number, not a government interchangeability claim): 1680-01-255-5351. Verify interchangeability with system specifications before substitution.
Key specifications for 3050-0006: Overall Diameter: 0.500 INCHES NOMINAL IN; Material: FIBER OVERALL. 2 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). 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.