The Waveguide, cataloged under National Stock Number 5985-00-489-3693, 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 13 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-00-489-3693 |
| Primary Part Number | AF2B028-6 |
| Item Name | Waveguide |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Frontgrade Technologies Inc. |
| Status | ACTIVE |
| Tubing Wall Construction Style | SEAMLESS SINGLE TUBING SEGMENT |
| Precious Material | SILVER |
| Style Designator | STRAIGHT TYPE |
| Flexibility | FLEXIBLE SINGLE TUBING SEGMENT |
| Waveguide Inside Width | 0.280 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | INTERNAL, RECTANGULAR EXTERNAL, RECTANGULAR |
| Waveguide Length | 6.000 INCHES NOMINAL IN |
| Waveguide Outside Height | 0.220 INCHES NOMINAL IN |
| Waveguide Outside Width | 0.360 INCHES NOMINAL IN |
| Surface Treatment | SILVER SINGLE TUBING SEGMENT OUTSIDE SURFACES |
| Precious Material and Location | EXTERNAL SURFACES SILVER |
| Waveguide Inside Height | 0.140 INCHES NOMINAL IN |
| Material | COPPER ALLOY SINGLE TUBING SEGMENT |
| 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 |
|---|---|
| AF2B028-6 PRIMARY | Frontgrade Technologies Inc. (USA) |
| Reference | Meaning |
|---|---|
| AF2B028-6 | 5/9 Secondary reference U.S. Government activity |
| 508-01436-125 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
NSN 5985-00-489-3693 is a Waveguide, manufactured by Frontgrade Technologies Inc., classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-00-489-3693 has 1 manufacturer part number on file: AF2B028-6 (Frontgrade Technologies Inc.).
Key specifications for AF2B028-6: Tubing Wall Construction Style: SEAMLESS SINGLE TUBING SEGMENT; Precious Material: SILVER; Style Designator: STRAIGHT TYPE; Flexibility: FLEXIBLE SINGLE TUBING SEGMENT. 13 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 5985-00-489-3693 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.