The Machmeter, cataloged under National Stock Number 6610-00-557-3192, is classified within Federal Supply Class 6610 (Flight Instruments) of the Instruments and Laboratory Equipment group. Government technical data includes 12 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6610-00-557-3192 |
| Item Name | Machmeter |
| FSC / FSG | 6610 / 66 — Flight Instruments |
| Status | ACTIVE |
| Mounting Facility Type and Quantity | 1 THREADED BEZEL |
| Mechanical Connection Quantity | 2 |
| Supplementary Features | DESIGNED TO INDICATE THE RATIO OF THE SPEED OF THE AIRPLANE TO THE SPEED OF SOUND AT VARYING ALTITUDES AND TEMPERATURES |
| Mechanical Connection Type | INTERNAL PIPE |
| Mechanical Connection Size | 1/8 IN. ANPT IN |
| Dial Outside Diameter | 2.750 INCHES NOMINAL IN |
| Pointer Type | INDICATING SINGLE POINTER |
| Nondefinitive Spec/std Data | A-2B TYPE |
| Height | 3.250 INCHES NOMINAL IN |
| Depth | 6.125 INCHES NOMINAL IN |
| Width | 3.250 INCHES NOMINAL IN |
| Pointer Finish | FLUORESCENT SINGLE POINTER |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| MILM5388TYPEA2B | 5/9 Secondary reference U.S. Government activity |
| MIL-M-5388 | 4/1 Identification reference U.S. Government activity |
| A-2B | 5/9 Secondary reference U.S. Government activity |
NSN 6610-00-557-3192 is a Machmeter, classified under FSC 6610, Flight Instruments. Status: active.
3 possible matches (shared part number, not a government interchangeability claim): 5930-00-660-7346, 6240-00-882-8487, 5965-01-626-9653. Verify interchangeability with system specifications before substitution.
Key specifications for 6610-00-557-3192: Mounting Facility Type and Quantity: 1 THREADED BEZEL; Mechanical Connection Quantity: 2; Supplementary Features: DESIGNED TO INDICATE THE RATIO OF THE SPEED OF THE AIRPLANE TO THE SPEED OF SOUND AT VARYING ALTITUDES AND TEMPERATURES; Mechanical Connection Type: INTERNAL PIPE. 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.
NSN 6610-00-557-3192 has DEMIL Code D. 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.