The Telescope,straight, cataloged under National Stock Number 6650-01-142-6438, 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 Cd & T Logistics Inc Dba Cd & T Logistics Inc. Government technical data includes 5 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 6650-01-142-6438 |
| Primary Part Number | 54-190BN |
| Item Name | Telescope,straight |
| FSC / FSG | 6650 / 66 — Optical Instruments, Test Equipment, Components and Accessories |
| Manufacturer | Cd & T Logistics Inc Dba Cd & T Logistics Inc |
| Status | ACTIVE |
| Optical Device Type | LENS |
| Focusing Type | ADJUSTABLE |
| Accessory Components and Quantity | MTG BASE 1 |
| Bracket | PROVIDED |
| Carrying Case | NOT PROVIDED |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | N |
| Part Number | Manufacturer |
|---|---|
| 54-190BN PRIMARY | Cd & T Logistics Inc Dba Cd & T Logistics Inc (USA) |
| Reference | Meaning |
|---|---|
| 822147-1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 6650-01-142-6438 is a Telescope,straight, manufactured by Cd & T Logistics Inc Dba Cd & T Logistics Inc, classified under FSC 6650, Optical Instruments, Test Equipment, Components and Accessories. Status: active.
NSN 6650-01-142-6438 has 1 manufacturer part number on file: 54-190BN (Cd & T Logistics Inc Dba Cd & T Logistics Inc).
1 possible match (shared part number, not a government interchangeability claim): 2990-01-537-4506. Verify interchangeability with system specifications before substitution.
Key specifications for 54-190BN: Optical Device Type: LENS; Focusing Type: ADJUSTABLE; Accessory Components and Quantity: MTG BASE 1; Bracket: PROVIDED. 5 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 6650-01-142-6438 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.