The Ring,retaining,optical Element, cataloged under National Stock Number 6650-01-155-3289, 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. Government technical data includes 12 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6650-01-155-3289 |
| Primary Part Number | 13144096 |
| 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 |
| Internal Flange Thickness | 0.025 INCHES NOMINAL IN |
| Thread Pitch Diameters | +1.1590 TO 1.1631 INCHES IN |
| Outside Diameter | 1.250 INCHES NOMINAL IN |
| Thread Length | 0.140 INCHES IN |
| Thread Location | EXTERNAL |
| Aperture Diameter | 0.220 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND |
| Thread Size | 1.188-28 |
| Screw Thread Series Designator | UN |
| Surface Treatment | PASSIVATE AND OXIDE |
| Thread Class | 2A A |
| Material | STEEL CORROSION RESISTING |
| 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 |
|---|---|
| 13144096 PRIMARY | Us Army Aviation and Missile Command (USA) |
| Reference | Meaning |
|---|---|
| 13144096 | 5/1 Secondary reference Wego Precision Machine, Inc. |
NSN 6650-01-155-3289 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 6650-01-155-3289 has 1 manufacturer part number on file: 13144096 (Us Army Aviation and Missile Command).
Key specifications for 13144096: Internal Flange Thickness: 0.025 INCHES NOMINAL IN; Thread Pitch Diameters: +1.1590 TO 1.1631 INCHES IN; Overall Length: 0.220 INCHES NOMINAL IN; Outside Diameter: 1.250 INCHES NOMINAL IN. 12 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.