The O-Ring, cataloged under National Stock Number 5331-01-646-3745, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Raytheon Company. Government technical data includes 3 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-646-3745 |
| Primary Part Number | L6668865 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Raytheon Company |
| Status | ACTIVE |
| Outside Diameter | 0.171 INCHES MINIMUM AND 0.185 INCHES MAXIMUM IN |
| Center Hole Diameter | 0.036 INCHES MINIMUM AND 0.043 INCHES MAXIMUM IN |
| Material | RUBBER FLUOROCARBON CLASS FPM |
| 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 |
|---|---|
| L6668865 PRIMARY | Raytheon Company (USA) |
NSN 5331-01-646-3745 is a O-Ring, manufactured by Raytheon Company, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-646-3745 has 1 manufacturer part number on file: L6668865 (Raytheon Company).
Key specifications for L6668865: Outside Diameter: 0.171 INCHES MINIMUM AND 0.185 INCHES MAXIMUM IN; Special Features: THE ITEM IS PART OF THE IR SEEKER HEAD ASSEMBLY COVER; Center Hole Diameter: 0.036 INCHES MINIMUM AND 0.043 INCHES MAXIMUM IN; End Item Identification: STANDARD MISSILE, RIM 66M-5. 3 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.