The Waveguide Assembly, cataloged under National Stock Number 5985-00-232-8104, 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 Ward Leonard Ct Llc. Government technical data includes 29 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-00-232-8104 |
| Primary Part Number | G128-311-001 |
| Item Name | Waveguide Assembly |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Ward Leonard Ct Llc |
| Status | ACTIVE |
| Tubing Wall Construction Style | SEAMLESS SINGLE TUBING SEGMENT |
| Flange Inside Height | 0.311 INCHES NOMINAL FIRST FLANGE IN |
| Flange Inside Height | 0.395 INCHES NOMINAL SECOND FLANGE IN |
| Flange Quantity | 2 |
| Voltage Standing Wave Ratio | 1.15 |
| Style Designator | BEND TYPE |
| Waveguide Offset Distance | 3.540 INCHES NOMINAL IN |
| Flexibility | FLEXIBLE SINGLE TUBING SEGMENT |
| Flange Inside Diameter | 1.000 INCHES NOMINAL SINGLE FLANGE IN |
| Waveguide Inside Width | 0.622 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | INTERNAL, RECTANGULAR EXTERNAL, RECTANGULAR |
| Flange Outside Height | 1.313 INCHES NOMINAL SECOND FLANGE IN |
| Flange Outside Height | 1.312 INCHES NOMINAL FIRST FLANGE IN |
| Flange Connecting Hole Diameter | 0.142 INCHES MAXIMUM ALL FLANGES SINGLE CONNECTION FACILITY IN |
| Flange Inside Width | 0.622 INCHES NOMINAL FIRST FLANGE IN |
| Flange Inside Width | 0.706 INCHES NOMINAL SECOND FLANGE IN |
| Waveguide Outside Height | 0.391 INCHES NOMINAL IN |
| Waveguide Outside Width | 0.702 INCHES NOMINAL IN |
| Flange Depth | 0.313 INCHES NOMINAL SECOND FLANGE IN |
| Flange Depth | 0.375 INCHES NOMINAL FIRST FLANGE IN |
| Flange Outside Width | 1.313 INCHES NOMINAL SECOND FLANGE IN |
| Flange Outside Width | 1.312 INCHES NOMINAL FIRST FLANGE IN |
| Insertion Loss in Decibels | 0.25 |
| Waveguide Inside Height | 0.311 INCHES NOMINAL IN |
| Material | COPPER ALLOY ALL TUBING SEGMENT AND FLANGE |
| Flange Connecting Facility and Quantity | 4 UNTHREADED HOLE(S) ALL FLANGES SINGLE CONNECTION FACILITY |
| Flange Style | CHOKE TYPE FIRST FLANGE |
| Flange Style | COVER TYPE SECOND FLANGE |
| Waveguide Longer Offset Distance | 4.090 INCHES NOMINAL IN |
| 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 |
|---|---|
| G128-311-001 PRIMARY | Ward Leonard Ct Llc (USA) |
| TRS57137 | Microwave Engineering Corporation (USA) |
| G128-311-001 PRIMARY | Bae Systems Information and Electronic Systems Integration Inc. (USA) |
| Reference | Meaning |
|---|---|
| G128-311-001 | 5/9 Secondary reference U.S. Government activity |
| G128-311-001 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| G128-311-001 | 5/9 Secondary reference U.S. Government activity |
| G128-311-001 | 5/9 Secondary reference Ward Leonard Ct Llc |
NSN 5985-00-232-8104 is a Waveguide Assembly, manufactured by Ward Leonard Ct Llc, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-00-232-8104 has 3 manufacturer part numbers on file: G128-311-001 (Ward Leonard Ct Llc), TRS57137 (Microwave Engineering Corporation), G128-311-001 (Bae Systems Information and Electronic Systems Integration Inc.).
Key specifications for G128-311-001: Tubing Wall Construction Style: SEAMLESS SINGLE TUBING SEGMENT; Flange Inside Height: 0.311 INCHES NOMINAL FIRST FLANGE IN; Flange Inside Height: 0.395 INCHES NOMINAL SECOND FLANGE IN; Flange Quantity: 2. 29 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 5985-00-232-8104 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.