The Retainer,optical Element, cataloged under National Stock Number 6650-00-944-1399, 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 18 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6650-00-944-1399 |
| Primary Part Number | 10121189 |
| Item Name | Retainer,optical Element |
| FSC / FSG | 6650 / 66 — Optical Instruments, Test Equipment, Components and Accessories |
| Manufacturer | Us Army Aviation and Missile Command |
| Status | ACTIVE |
| Shoulder Length | 0.085 INCHES MINIMUM AND 0.095 INCHES MAXIMUM IN |
| Hole or Slot Quantity | 2 |
| Drive Type | SLOTTED |
| Shoulder Diameter | 0.775 INCHES MINIMUM AND 0.795 INCHES MAXIMUM IN |
| Drive Facility Angular Spacing in Deg | 180.0 |
| Style Designator | SHOULDERED |
| Setscrew Notch | NOT PROVIDED |
| Material Document and Classification | QQ-A-225/6, T351 FED SPEC SINGLE MATERIAL RESPONSE |
| Diameter | 0.094 INCHES NOMINAL IN |
| Guide Location | DRIVE EDGE |
| Guide Design | THREAD CHAMFER |
| Surface Treatment | ANODIZE |
| Depth | 0.050 INCHES NOMINAL IN |
| Width | 0.094 INCHES NOMINAL IN |
| Internal Annular Serration | NOT PROVIDED |
| Material | ALUMINUM ALLOY 2024 |
| Flange Thread Size | 0.875 IN.-32 UNS 2A A |
| Hole Diameter | 0.590 INCHES MINIMUM AND 0.610 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 6650-00-944-1399 is a Retainer,optical Element, manufactured by Us Army Aviation and Missile Command, classified under FSC 6650, Optical Instruments, Test Equipment, Components and Accessories. Status: active.
NSN 6650-00-944-1399 has 2 manufacturer part numbers on file: 10121189 (Us Army Aviation and Missile Command), 10121189 (Lockheed Martin Corp Electronics and Missiles Div).
Key specifications for 10121189: Shoulder Length: 0.085 INCHES MINIMUM AND 0.095 INCHES MAXIMUM IN; Hole or Slot Quantity: 2; Drive Type: SLOTTED; Shoulder Diameter: 0.775 INCHES MINIMUM AND 0.795 INCHES MAXIMUM IN. 18 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.
NSN 6650-00-944-1399 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.