The Flange,waveguide, cataloged under National Stock Number 5985-01-171-1902, is classified within Federal Supply Class 5985 (Antennas, Waveguides, and Related Equipment) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Frontgrade Technologies Inc.. Government technical data includes 10 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-01-171-1902 |
| Primary Part Number | MA54749 |
| Item Name | Flange,waveguide |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Frontgrade Technologies Inc. |
| Status | ACTIVE |
| FSC Application Data | ACFT GUNNERY FIRE CONTROL COMPONENT |
| Flange Inside Height | 0.300 INCHES NOMINAL ALL FLANGES IN |
| Flange Outside Height | 1.340 INCHES NOMINAL ALL FLANGES IN |
| Flange Inside Width | 1.760 INCHES NOMINAL ALL FLANGES IN |
| Flange Depth | 0.270 INCHES NOMINAL ALL FLANGES IN |
| Flange Outside Width | 1.010 INCHES NOMINAL ALL FLANGES IN |
| Surface Treatment | CHROMATE AND ALUMINUM ALLOY ALL FLANGE ALL SURFACES |
| Material | ALUMINUM ALLOY ALL FLANGE |
| Flange Connecting Facility and Quantity | 6 CAPTIVE SCREW(S) SINGLE FLANGE SINGLE CONNECTION FACILITY |
| Flange Style | CONTACT TYPE ALL FLANGES |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| MA54749-S001 | Frontgrade Technologies Inc. (USA) |
| MA54749 PRIMARY | Frontgrade Technologies Inc. (USA) |
| Reference | Meaning |
|---|---|
| 585R823G01 | 7/2 Vendor item drawing reference U.S. Government activity |
| MA54749 | 5/9 Secondary reference U.S. Government activity |
NSN 5985-01-171-1902 is a Flange,waveguide, manufactured by Frontgrade Technologies Inc., classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-171-1902 has 2 manufacturer part numbers on file: MA54749-S001 (Frontgrade Technologies Inc.), MA54749 (Frontgrade Technologies Inc.).
Key specifications for MA54749: FSC Application Data: ACFT GUNNERY FIRE CONTROL COMPONENT; Flange Inside Height: 0.300 INCHES NOMINAL ALL FLANGES IN; Flange Outside Height: 1.340 INCHES NOMINAL ALL FLANGES IN; Flange Inside Width: 1.760 INCHES NOMINAL ALL FLANGES IN. 10 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
NSN 5985-01-171-1902 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.