The Lens,optical Instrument, cataloged under National Stock Number 6650-01-338-9998, is classified within Federal Supply Class 6650 (Optical Instruments, Test Equipment, Components and Accessories) of the Instruments and Laboratory Equipment group. The manufacturer of record is Oriel Corp. Government technical data includes 3 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 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6650-01-338-9998 |
| Primary Part Number | 1598 |
| Item Name | Lens,optical Instrument |
| FSC / FSG | 6650 / 66 — Optical Instruments, Test Equipment, Components and Accessories |
| Manufacturer | Oriel Corp |
| Status | ACTIVE |
| Equivalent Focal Length | -0.400 CENTIMETERS CM |
| Material | GLASS |
| Single Lens Style | PLANO-CONCAVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 1598 PRIMARY | Oriel Corp (USA) |
NSN 6650-01-338-9998 is a Lens,optical Instrument, manufactured by Oriel Corp, classified under FSC 6650, Optical Instruments, Test Equipment, Components and Accessories. Status: active.
NSN 6650-01-338-9998 has 1 manufacturer part number on file: 1598 (Oriel Corp).
2 possible matches (shared part number, not a government interchangeability claim): 6750-01-382-9545, 5310-01-558-9310. Verify interchangeability with system specifications before substitution.
Key specifications for 1598: Equivalent Focal Length: -0.400 CENTIMETERS CM; End Item Identification: 4931-01-324-6333; Material: GLASS; Single Lens Style: PLANO-CONCAVE. 3 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.
NSN 6650-01-338-9998 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.