The Spectrometer,diffraction Grating, cataloged under National Stock Number 6650-01-142-0866, is classified within Federal Supply Class 6650 (Optical Instruments, Test Equipment, Components and Accessories) of the Instruments and Laboratory Equipment group. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 6650-01-142-0866 |
| Item Name | Spectrometer,diffraction Grating |
| FSC / FSG | 6650 / 66 — Optical Instruments, Test Equipment, Components and Accessories |
| Status | ACTIVE |
| 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 |
| Reference | Meaning |
|---|---|
| 97-785 | 3/9 Design control — primary reference U.S. Government activity |
| 750 | 5/9 Secondary reference U.S. Government activity |
| 6650-2125-0055 | 6/9 Informative reference only U.S. Government activity |
NSN 6650-01-142-0866 is a Spectrometer,diffraction Grating, classified under FSC 6650, Optical Instruments, Test Equipment, Components and Accessories. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 2910-01-415-0893. Verify interchangeability with system specifications before substitution.
Key specifications for 6650-01-142-0866: Special Features: 50 ANALYTICAL CHANNELS;GRATING ALUMINIZED REPLICA FROM INTERFERMETRICALLY RULED MASTER,SPACED 2400 GROOVES PER MM,RULE AREA 30X40 MM;BLAZE 270.0 NM;ANGLE OF INCIDENCE 42 DEG;WAVELENGTH 170.0 TO 500.0 NM;FOCAL CURVE LG 580.0 MM;DETECTOR TYPE W/PHOTOMULTIPLIERS;115 VAC,50-60 HZ,3.0 KVA VAC. 0 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 6650-01-142-0866 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.