The Waveguide Assembly, cataloged under National Stock Number 5985-00-528-6938, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 5985-00-528-6938 |
| Primary Part Number | 117261 |
| Item Name | Waveguide Assembly |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Frontgrade Technologies Inc. |
| Status | ACTIVE |
| Tubing Wall Construction Style | CONVOLUTE SINGLE TUBING SEGMENT |
| Flange Quantity | 2 |
| Precious Material | SILVER |
| Voltage Standing Wave Ratio | 1.05 |
| Style Designator | BEND TYPE |
| Waveguide Offset Distance | 1.500 FEET NOMINAL FT |
| Flexibility | FLEXIBLE SINGLE TUBING SEGMENT |
| Waveguide Inside Width | 6.500 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | INTERNAL, RECTANGULAR EXTERNAL, RECTANGULAR |
| Operating Pressure | 5.0 POUNDS PER SQUARE INCH GAUGE (PSIG) MAXIMUM LBS |
| Waveguide Outside Height | 3.410 INCHES NOMINAL IN |
| Waveguide Outside Width | 6.660 INCHES NOMINAL IN |
| Surface Treatment | OXIDE FILM ALL FLANGE INSIDE SURFACES |
| Surface Treatment | SILVER SINGLE TUBING SEGMENT INSIDE SURFACES |
| Surface Treatment | PAINT SINGLE FLANGE OUTSIDE SURFACES |
| Precious Material and Location | TUBING INTERIOR SILVER |
| Waveguide Inside Height | 3.250 INCHES NOMINAL IN |
| Material | ALUMINUM ALL FLANGE |
| Material | RUBBER CHLOROPRENE SINGLE TUBING JACKET |
| Material | COPPER ALLOY SINGLE TUBING SEGMENT |
| Waveguide Longer Offset Distance | 1.500 FEET NOMINAL FT |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 117261 PRIMARY | Frontgrade Technologies Inc. (USA) |
| Reference | Meaning |
|---|---|
| ACW1021-2 | 7/2 Vendor item drawing reference U.S. Government activity |
| 117261 | 5/9 Secondary reference U.S. Government activity |
NSN 5985-00-528-6938 is a Waveguide Assembly, manufactured by Frontgrade Technologies Inc., classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-00-528-6938 has 1 manufacturer part number on file: 117261 (Frontgrade Technologies Inc.).
2 possible matches (shared part number, not a government interchangeability claim): 5962-01-139-5770, 5310-01-411-1907. Verify interchangeability with system specifications before substitution.
Key specifications for 117261: Tubing Wall Construction Style: CONVOLUTE SINGLE TUBING SEGMENT; Flange Quantity: 2; Precious Material: SILVER; Voltage Standing Wave Ratio: 1.05. 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 5985-00-528-6938 has DEMIL Code B. 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.