The Waveguide Assembly, cataloged under National Stock Number 5985-01-102-0998, 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 Microtech Inc Dba Microtech Inc. Government technical data includes 26 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5985-01-102-0998 |
| Primary Part Number | MTP28-503N |
| Item Name | Waveguide Assembly |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Microtech Inc Dba Microtech Inc |
| Status | ACTIVE |
| Flange Inside Height | 0.280 INCHES NOMINAL ALL FLANGES IN |
| Flange Quantity | 2 |
| Precious Material | SILVER |
| Flexibility | FLEXIBLE SINGLE TUBING SEGMENT |
| Flange Inside Diameter | 0.500 INCHES NOMINAL ALL FLANGES IN |
| Waveguide Inside Width | 0.280 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | INTERNAL, RECTANGULAR EXTERNAL, RECTANGULAR |
| Flange Outside Height | 0.750 INCHES NOMINAL ALL FLANGES IN |
| Flange Inside Width | 0.140 INCHES NOMINAL ALL FLANGES IN |
| Thread Direction | RIGHT-HAND ALL FLANGES ALL CONNECTION FACILITIES |
| Nominal Thread Size | 0.112 INCHES ALL FLANGES ALL CONNECTION FACILITIES IN |
| Waveguide Outside Height | 0.350 INCHES NOMINAL IN |
| Waveguide Outside Width | 0.500 INCHES NOMINAL IN |
| Flange Depth | 0.210 INCHES NOMINAL ALL FLANGES IN |
| Flange Outside Width | 0.750 INCHES NOMINAL ALL FLANGES IN |
| Tubing Twist Type | TWISTABLE SINGLE TUBING SEGMENT |
| Insertion Loss in Decibels | 0.50 |
| Precious Material and Location | TUBING SILVER |
| Waveguide Inside Height | 0.140 INCHES NOMINAL IN |
| Thread Class | 2B ALL FLANGES ALL CONNECTION FACILITIES |
| Material | RUBBER SYNTHETIC SINGLE TUBING JACKET |
| Material | SILVER SINGLE TUBING SEGMENT |
| Material | COPPER ALLOY ALL FLANGE |
| Flange Connecting Facility and Quantity | 8 THREADED HOLE(S) ALL FLANGES SINGLE CONNECTION FACILITY |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) ALL FLANGES ALL CONNECTION FACILITIES |
| Flange Style | CHOKE 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 |
|---|---|
| MTP28-503N PRIMARY | Microtech Inc Dba Microtech Inc (USA) |
| Reference | Meaning |
|---|---|
| 933C055961 | 5/9 Secondary reference L3 Technologies, Inc. Div L3 Keo |
| 055961 | 7/2 Vendor item drawing reference L3 Technologies, Inc. Div L3 Keo |
NSN 5985-01-102-0998 is a Waveguide Assembly, manufactured by Microtech Inc Dba Microtech Inc, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-102-0998 has 1 manufacturer part number on file: MTP28-503N (Microtech Inc Dba Microtech Inc).
Key specifications for MTP28-503N: Flange Inside Height: 0.280 INCHES NOMINAL ALL FLANGES IN; Flange Quantity: 2; Precious Material: SILVER; Flexibility: FLEXIBLE SINGLE TUBING SEGMENT. 26 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 5985-01-102-0998 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.