The Ring,retaining,optical Element, cataloged under National Stock Number 6650-01-102-5151, 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 Qioptiq Ltd. Government technical data includes 7 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 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 | 6650-01-102-5151 |
| Primary Part Number | 011085 |
| Item Name | Ring,retaining,optical Element |
| FSC / FSG | 6650 / 66 — Optical Instruments, Test Equipment, Components and Accessories |
| Manufacturer | Qioptiq Ltd |
| Status | ACTIVE |
| Internal Flange Thickness | 0.125 INCHES NOMINAL IN |
| Outside Diameter | 3.100 INCHES NOMINAL IN |
| Thread Location | INTERNAL |
| Thread Direction | RIGHT-HAND |
| Thread Size | 3 5/16-32 |
| Screw Thread Series Designator | UN |
| Material | ALUMINUM ALLOY 2024 |
| 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 |
|---|---|
| 011085 PRIMARY | Qioptiq Ltd (GBR) |
NSN 6650-01-102-5151 is a Ring,retaining,optical Element, manufactured by Qioptiq Ltd, classified under FSC 6650, Optical Instruments, Test Equipment, Components and Accessories. Status: active.
NSN 6650-01-102-5151 has 1 manufacturer part number on file: 011085 (Qioptiq Ltd).
1 possible match (shared part number, not a government interchangeability claim): 2520-01-168-1442. Verify interchangeability with system specifications before substitution.
Key specifications for 011085: Internal Flange Thickness: 0.125 INCHES NOMINAL IN; Outside Diameter: 3.100 INCHES NOMINAL IN; Thread Location: INTERNAL; Thread Direction: RIGHT-HAND. 7 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.