The Waveguide Assembly, cataloged under National Stock Number 5985-01-090-6997, 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 Antenna & Radome Research Associates Corp Dba Arra Inc Div Arra Inc. Government technical data includes 30 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-01-090-6997 |
| Primary Part Number | SM-D-947967 |
| Item Name | Waveguide Assembly |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Antenna & Radome Research Associates Corp Dba Arra Inc Div Arra Inc |
| Status | ACTIVE |
| Tubing Wall Construction Style | SEAMLESS SINGLE TUBING SEGMENTSEAMLESS SINGLE TUBING SEGMENT |
| Flange Inside Height | 0.497 INCHES NOMINAL FIRST FLANGE0.497 INCHES NOMINAL FIRST FLANGE IN |
| Flange Inside Height | 0.497 INCHES NOMINAL SECOND FLANGE0.497 INCHES NOMINAL SECOND FLANGE IN |
| Flange Quantity | 22 |
| Style Designator | STRAIGHT TYPE |
| Flexibility | RIGID ALL TUBING SEGMENT |
| Waveguide Inside Width | 1.122 INCHES NOMINAL1.122 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | INTERNAL, RECTANGULAR EXTERNAL, RECTANGULARINTERNAL, RECTANGULAR EXTERNAL, RECTANGULAR |
| Flange Outside Height | 1.875 INCHES NOMINAL SECOND FLANGE1.875 INCHES NOMINAL SECOND FLANGE IN |
| Flange Outside Height | 1.750 INCHES NOMINAL FIRST FLANGE1.750 INCHES NOMINAL FIRST FLANGE IN |
| Flange Connecting Hole Diameter | 0.169 INCHES NOMINAL SECOND FLANGE SINGLE CONNECTION FACILITY0.169 INCHES NOMINAL SECOND FLANGE SINGLE CONNECTION FACILITY IN |
| Flange Inside Width | 1.122 INCHES NOMINAL FIRST FLANGE1.122 INCHES NOMINAL FIRST FLANGE IN |
| Flange Inside Width | 1.122 INCHES NOMINAL SECOND FLANGE1.122 INCHES NOMINAL SECOND FLANGE IN |
| Thread Direction | RIGHT-HAND FIRST FLANGE SINGLE CONNECTION FACILITYRIGHT-HAND FIRST FLANGE SINGLE CONNECTION FACILITY |
| Waveguide Length | 3.000 INCHES NOMINAL IN |
| Nominal Thread Size | 0.190 INCHES FIRST FLANGE SINGLE CONNECTION FACILITY0.190 INCHES FIRST FLANGE SINGLE CONNECTION FACILITY IN |
| Waveguide Outside Height | 0.625 INCHES NOMINAL0.625 INCHES NOMINAL IN |
| Waveguide Outside Width | 1.250 INCHES NOMINAL1.250 INCHES NOMINAL IN |
| Flange Depth | 0.620 INCHES NOMINAL FIRST FLANGE0.620 INCHES NOMINAL FIRST FLANGE IN |
| Flange Depth | 0.625 INCHES NOMINAL SECOND FLANGE0.625 INCHES NOMINAL SECOND FLANGE IN |
| Flange Outside Width | 1.875 INCHES NOMINAL SECOND FLANGE1.875 INCHES NOMINAL SECOND FLANGE IN |
| Flange Outside Width | 2.500 INCHES NOMINAL FIRST FLANGE2.500 INCHES NOMINAL FIRST FLANGE IN |
| Surface Treatment | PAINT ALL FLANGE OUTSIDE SURFACES |
| Waveguide Inside Height | 0.497 INCHES NOMINAL0.497 INCHES NOMINAL IN |
| Thread Class | 2B FIRST FLANGE SINGLE CONNECTION FACILITY2B FIRST FLANGE SINGLE CONNECTION FACILITY |
| Material | COPPER ALL FLANGE |
| Flange Connecting Facility and Quantity | 4 UNTHREADED HOLE(S) SECOND FLANGE SINGLE CONNECTION FACILITY4 UNTHREADED HOLE(S) SECOND FLANGE SINGLE CONNECTION FACILITY |
| Flange Connecting Facility and Quantity | 8 THREADED HOLE(S) FIRST FLANGE SINGLE CONNECTION FACILITY8 THREADED HOLE(S) FIRST FLANGE SINGLE CONNECTION FACILITY |
| Thread Series Designator | UNF FIRST FLANGE SINGLE CONNECTION FACILITY |
| Flange Style | CHOKE TYPE SECOND FLANGE |
| 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 |
|---|---|
| SM-D-947967 | Antenna & Radome Research Associates Corp Dba Arra Inc Div Arra Inc (USA) |
| SM-D-947967 | Microtech Inc Dba Microtech Inc (USA) |
| Reference | Meaning |
|---|---|
| SM-D-947967 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5985-01-090-6997 is a Waveguide Assembly, manufactured by Antenna & Radome Research Associates Corp Dba Arra Inc Div Arra Inc, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-090-6997 has 2 manufacturer part numbers on file: SM-D-947967 (Antenna & Radome Research Associates Corp Dba Arra Inc Div Arra Inc), SM-D-947967 (Microtech Inc Dba Microtech Inc).
Key specifications for SM-D-947967: Tubing Wall Construction Style: SEAMLESS SINGLE TUBING SEGMENTSEAMLESS SINGLE TUBING SEGMENT; Flange Inside Height: 0.497 INCHES NOMINAL FIRST FLANGE0.497 INCHES NOMINAL FIRST FLANGE IN; Flange Inside Height: 0.497 INCHES NOMINAL SECOND FLANGE0.497 INCHES NOMINAL SECOND FLANGE IN; Flange Quantity: 22. 30 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 5985-01-090-6997 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.