The Crystal Mount,waveguide, cataloged under National Stock Number 4931-00-770-9884, is classified within Federal Supply Class 4931 (Fire Control Maintenance and Repair Shop Specialized Equipment) of the Maintenance and Repair Shop Equipment group. The manufacturer of record is Telephonics Corp/prd Instruments. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4931-00-770-9884 |
| Primary Part Number | 6606MF1 |
| Item Name | Crystal Mount,waveguide |
| FSC / FSG | 4931 / 49 — Fire Control Maintenance and Repair Shop Specialized Equipment |
| Manufacturer | Telephonics Corp/prd Instruments |
| Status | ACTIVE |
| General Characteristics Item Description | FREQ RANGE 26.5 TO 40.0 GHZ,WAVEGUIDE SIZE 0.280 IN. BY 0.140 IN. GHz |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 6606MF1 PRIMARY | Telephonics Corp/prd Instruments (USA) |
| Reference | Meaning |
|---|---|
| 6606MF1 | 5/9 Secondary reference Peraton Inc |
| 7923162 | 7/2 Vendor item drawing reference Us Army Aviation and Missile Command |
NSN 4931-00-770-9884 is a Crystal Mount,waveguide, manufactured by Telephonics Corp/prd Instruments, classified under FSC 4931, Fire Control Maintenance and Repair Shop Specialized Equipment. Status: active.
NSN 4931-00-770-9884 has 1 manufacturer part number on file: 6606MF1 (Telephonics Corp/prd Instruments).
Key specifications for 6606MF1: General Characteristics Item Description: FREQ RANGE 26.5 TO 40.0 GHZ,WAVEGUIDE SIZE 0.280 IN. BY 0.140 IN. GHz. 1 specification is 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 4931-00-770-9884 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.