The Ring,retaining,optical Element, cataloged under National Stock Number 6650-01-159-3974, 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 Us Army Aviation and Missile Command. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Ring,retaining,optical Element |
| FSC / FSG | 6650 — Optical Instruments, Test Equipment, Components and Accessories (FSG 66) |
| Manufacturers | Us Army Aviation and Missile Command (CAGE 18876) |
| Parameter | Value |
|---|---|
| NSN | 6650-01-159-3974 |
| Primary Part Number | 13153360-2 |
| Item Name | Ring,retaining,optical Element |
| FSC / FSG | 6650 / 66 — Optical Instruments, Test Equipment, Components and Accessories |
| Manufacturer | Us Army Aviation and Missile Command |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| 13153360-2 PRIMARY | Us Army Aviation and Missile Command (USA) |
| Reference | Meaning |
|---|---|
| TT373N2B3 | 5/9 Secondary reference Dupree Inc Aerospace Knob Co Div |
| TT373-NB3 | 5/9 Secondary reference Dupree Inc Aerospace Knob Co Div |
| TT373-NB3 | 5/2 Secondary reference U.S. Government activity |
NSN 6650-01-159-3974 is a Ring,retaining,optical Element, manufactured by Us Army Aviation and Missile Command, classified under FSC 6650, Optical Instruments, Test Equipment, Components and Accessories. Status: active.
NSN 6650-01-159-3974 has 1 manufacturer part number on file: 13153360-2 (Us Army Aviation and Missile Command).
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 6650-01-159-3974 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.