The Waveguide Assembly, cataloged under National Stock Number 5985-01-457-7693, 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 21 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-01-457-7693 |
| Primary Part Number | REB90-1A-1A-1.5-1.5-A |
| Item Name | Waveguide Assembly |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Frontgrade Technologies Inc. |
| Status | ACTIVE |
| Tubing Wall Construction Style | SEAMLESS SINGLE TUBING SEGMENT |
| Flange Inside Height | 0.479 INCHES NOMINAL ALL FLANGES IN |
| Flange Quantity | 2 |
| Bend Angle in Deg | 90.0 SINGLE BEND E-PLANE |
| Style Designator | BEND TYPE |
| Waveguide Offset Distance | 1.500 INCHES NOMINAL IN |
| Flexibility | RIGID SINGLE TUBING SEGMENT |
| Waveguide Inside Width | 0.900 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | INTERNAL, RECTANGULAR EXTERNAL, RECTANGULAR |
| Flange Outside Height | 1.500 INCHES NOMINAL ALL FLANGES IN |
| Flange Connecting Hole Diameter | 0.169 INCHES NOMINAL ALL FLANGES SINGLE CONNECTION FACILITY IN |
| Flange Inside Width | 0.854 INCHES NOMINAL ALL FLANGES IN |
| Waveguide Outside Height | 0.500 INCHES NOMINAL IN |
| Waveguide Outside Width | 1.000 INCHES NOMINAL IN |
| Flange Depth | 0.391 INCHES NOMINAL ALL FLANGES IN |
| Flange Outside Width | 1.500 INCHES NOMINAL ALL FLANGES IN |
| Waveguide Inside Height | 0.400 INCHES NOMINAL IN |
| Material | ALUMINUM SINGLE TUBING SEGMENT AND FLANGE |
| Flange Connecting Facility and Quantity | 4 UNTHREADED HOLE(S) ALL FLANGES SINGLE CONNECTION FACILITY |
| Flange Style | COVER TYPE ALL FLANGES |
| Waveguide Longer Offset Distance | 1.500 INCHES NOMINAL IN |
| 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 |
|---|---|
| REB90-1A-1A-1.5-1.5-A PRIMARY | Frontgrade Technologies Inc. (USA) |
NSN 5985-01-457-7693 is a Waveguide Assembly, manufactured by Frontgrade Technologies Inc., classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-457-7693 has 1 manufacturer part number on file: REB90-1A-1A-1.5-1.5-A (Frontgrade Technologies Inc.).
Key specifications for REB90-1A-1A-1.5-1.5-A: Tubing Wall Construction Style: SEAMLESS SINGLE TUBING SEGMENT; Flange Inside Height: 0.479 INCHES NOMINAL ALL FLANGES IN; Flange Quantity: 2; Bend Angle in Deg: 90.0 SINGLE BEND E-PLANE. 21 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 5985-01-457-7693 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.