The Ring,retaining,optical Element, cataloged under National Stock Number 6650-01-437-6800, 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 Olympus America Inc. Government technical data includes 5 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6650-01-437-6800 |
| Primary Part Number | 3355AS124-1 |
| Item Name | Ring,retaining,optical Element |
| FSC / FSG | 6650 / 66 — Optical Instruments, Test Equipment, Components and Accessories |
| Manufacturer | Olympus America Inc |
| Status | ACTIVE |
| Outside Diameter | 22.8 MILLIMETERS NOMINAL MM |
| Thread Location | INTERNAL |
| Thread Size | M13 X 0.5-6H |
| Mounting Configuration | 2 HOLES 2.0 MM DIA. X 2.0 MM DEEP ON 19.5 MM DIA. MM |
| Material | ALUMINUM ALLOY |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 3355AS124-1 | Olympus America Inc (USA) |
| 3355AS124-1 | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA) |
| Reference | Meaning |
|---|---|
| 3355AS124-1 | 3/9 Design control — primary reference Olympus America Inc |
NSN 6650-01-437-6800 is a Ring,retaining,optical Element, manufactured by Olympus America Inc, classified under FSC 6650, Optical Instruments, Test Equipment, Components and Accessories. Status: active.
NSN 6650-01-437-6800 has 2 manufacturer part numbers on file: 3355AS124-1 (Olympus America Inc), 3355AS124-1 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier).
Key specifications for 3355AS124-1: Overall Length: 6.5 MILLIMETERS NOMINAL MM; Outside Diameter: 22.8 MILLIMETERS NOMINAL MM; Thread Location: INTERNAL; Thread Size: M13 X 0.5-6H. 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.
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.