The Bimetal Assembly, cataloged under National Stock Number 6610-01-586-5221, is classified within Federal Supply Class 6610 (Flight Instruments) of the Instruments and Laboratory Equipment group. The manufacturer of record is Aerospace Instrument Support, Inc. Dba Aerospace Instrument Support Inc. Government technical data includes 4 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 6610-01-586-5221 |
| Primary Part Number | 201231-8 |
| Item Name | Bimetal Assembly |
| FSC / FSG | 6610 / 66 — Flight Instruments |
| Manufacturer | Aerospace Instrument Support, Inc. Dba Aerospace Instrument Support Inc |
| Status | ACTIVE |
| Overall Diameter | 0.154 INCHES MINIMUM AND 0.156 INCHES MAXIMUM IN |
| Reference Data and Literature | TO 5F3-3-19-4 AND DRAWING |
| Special Markings | WHITE COLOR CODE |
| Material | COPPER AND STEEL CORROSION RESISTING |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 201231-8 | Aerospace Instrument Support, Inc. Dba Aerospace Instrument Support Inc (USA) |
| Reference | Meaning |
|---|---|
| 201231-8 | 3/2 Design control — primary reference U.S. Government activity |
NSN 6610-01-586-5221 is a Bimetal Assembly, manufactured by Aerospace Instrument Support, Inc. Dba Aerospace Instrument Support Inc, classified under FSC 6610, Flight Instruments. Status: active.
NSN 6610-01-586-5221 has 1 manufacturer part number on file: 201231-8 (Aerospace Instrument Support, Inc. Dba Aerospace Instrument Support Inc).
Key specifications for 201231-8: Overall Diameter: 0.154 INCHES MINIMUM AND 0.156 INCHES MAXIMUM IN; Reference Data and Literature: TO 5F3-3-19-4 AND DRAWING; Special Features: CONSISTS OF TEMPERATURE COMPENSATOR, COMPENSATOR HEAD, AND COMPENSATOR BODY; End Item Identification: COUNTER DRUM POINTER PRESSURE ALTIMETER AAU-27/A 10450-3190, -31105, AND -31944. 4 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 6610-01-586-5221 has DEMIL Code B. 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.