The Ring,retaining,optical Element, cataloged under National Stock Number 6650-00-499-2802, is classified within Federal Supply Class 6650 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is L3 Technologies, Inc. Div L3 Keo. Government technical data includes 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 6650-00-499-2802 |
| Primary Part Number | C685-17 |
| Item Name | Ring,retaining,optical Element |
| FSC / FSG | 6650 / 66 — No Item Name Available |
| Manufacturer | L3 Technologies, Inc. Div L3 Keo |
| Status | CANCELLED |
| Groove Diameter | 3.270 INCHES NOMINAL IN |
| Inner Groove Width | 0.060 INCHES NOMINAL IN |
| Thread Location | INTERNAL |
| Internal Flange Thickness | 0.219 INCHES NOMINAL IN |
| Groove Location | INSIDE FACE OF FLANGE |
| Aperture Diameter | 2.954 INCHES NOMINAL IN |
| Material | ALUMINUM ALLOY 6061 |
| Screw Thread Series Designator | UNS |
| Thread Length | 0.472 INCHES IN |
| Thread Class | 3B |
| Thread Size | 3.250 IN.-32 IN |
| Outside Diameter | 4.688 INCHES NOMINAL IN |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
NSN 6650-00-499-2802 is a Ring,retaining,optical Element, manufactured by L3 Technologies, Inc. Div L3 Keo, classified under FSC 6650 (No Item Name Available). Status: cancelled.
NSN 6650-00-499-2802 has 3 cross-referenced part numbers: 012522 (L3 Technologies, Inc. Div L3 Keo), C687-17 (L3 Technologies, Inc. Div L3 Keo), C685-17 (L3 Technologies, Inc. Div L3 Keo).
There are 2 known substitutes for 6650-00-499-2802: 2910-00-080-3454, 5342-00-597-6479. Verify interchangeability with system specifications before substitution.
Key specifications for C685-17: Groove Diameter: 3.270 INCHES NOMINAL IN; Inner Groove Width: 0.060 INCHES NOMINAL IN; Thread Location: INTERNAL; Special Features: 32 PITCH ANTI-REFLECTION THREAD INSIDE SURFACE OF BOTH ENDS,SIX EA HOLES 0.1540 IN. DIA. DRILLED THROUGH EXTERNAL FLANGE,EXTERNAL FLANGE HAS TWO EA RECTANGLE MILLED AREAS 1.812 IN. FROM CENTER OF RING DIA TO OUTER EDGE OFFLANGE AND 1.000 IN. WIDE,1 EA HOLE 0.110 IN. DIA. DRILLE THROUGH EXTERNAL FLANGE,2 EA HOLES 0.188 IN. DIA DRILLED THROUGH BODY OF RING IN. 14 total characteristics are documented in the Federal Logistics Information System.
NSN 6650-00-499-2802 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.