The Cleaner,ultrasonic,, cataloged under National Stock Number 6640-01-421-5808, is classified within Federal Supply Class 6640 (Laboratory Equipment and Supplies) of the Instruments and Laboratory Equipment group. The manufacturer of record is L & R Manufacturing Company. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6640-01-421-5808 |
| Primary Part Number | T-28B |
| Item Name | Cleaner,ultrasonic, |
| FSC / FSG | 6640 / 66 — Laboratory Equipment and Supplies |
| Manufacturer | L & R Manufacturing Company |
| 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 |
| Part Number | Manufacturer |
|---|---|
| T-28B PRIMARY | L & R Manufacturing Company (USA) |
| Reference | Meaning |
|---|---|
| NAVY 1993 2389 | 5/1 Secondary reference U.S. Government activity |
| LLH377458 | 5/1 Secondary reference Naval Medical Material Support Command Detachment |
NSN 6640-01-421-5808 is a Cleaner,ultrasonic,, manufactured by L & R Manufacturing Company, classified under FSC 6640, Laboratory Equipment and Supplies. Status: active.
NSN 6640-01-421-5808 has 1 manufacturer part number on file: T-28B (L & R Manufacturing Company).
Key specifications for T-28B: Part Name Assigned by Controlling Agency: CLEANER ULTRASONIC. 0 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.