The Ring,externally Threaded, cataloged under National Stock Number 5365-00-646-8340, is classified within Federal Supply Class 5365 (Bushings, Rings, Shims, and Spacers) of the Hardware and Abrasives group. The manufacturer of record is Us Army Aviation and Missile Command. Government technical data includes 16 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 | 5365-00-646-8340 |
| Primary Part Number | 9090821 |
| Item Name | Ring,externally Threaded |
| FSC / FSG | 5365 / 53 — Bushings, Rings, Shims, and Spacers |
| Manufacturer | Us Army Aviation and Missile Command |
| Status | ACTIVE |
| Bore Annular Internal Serration | NOT INCLUDED |
| Beveled Thread | INCLUDED |
| Drive Type | SLOTTED FACE |
| Thread Location | BOTH ENDS |
| Bore Shape | STRAIGHT |
| Thread Direction | RIGHT-HAND |
| Setscrew Locking Notch | INCLUDED |
| Accommodation Type and Quantity | 2 SLOTS |
| Casehardening Indicator | NOT CASEHARDENED |
| Angle Between Accommodations in Deg | 180.0 |
| Thread Size | 3.12 UN |
| Screw Thread Series Designator | UN |
| Depth | 0.156 INCHES NOMINAL IN |
| Width | 0.156 INCHES NOMINAL IN |
| Thread Class | 3A A |
| Bore Diameter | 2.625 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 5365-00-646-8340 is a Ring,externally Threaded, manufactured by Us Army Aviation and Missile Command, classified under FSC 5365, Bushings, Rings, Shims, and Spacers. Status: active.
NSN 5365-00-646-8340 has 2 manufacturer part numbers on file: 9090821 (Us Army Aviation and Missile Command), 9088844 (Us Army Aviation and Missile Command).
Key specifications for 9090821: Bore Annular Internal Serration: NOT INCLUDED; Beveled Thread: INCLUDED; Drive Type: SLOTTED FACE; Overall Length: 0.400 INCHES NOMINAL IN. 16 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.