The Adapter,waveguide, cataloged under National Stock Number 5985-00-177-9138, is classified within Federal Supply Class 5985 (Antennas, Waveguides, and Related Equipment) of the Electrical and Electronic Equipment Components group. Government technical data includes 30 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 5985-00-177-9138 |
| Item Name | Adapter,waveguide |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Status | ACTIVE |
| Tubing Wall Construction Style | SEAMLESS SINGLE TUBING SEGMENT |
| Flange Inside Height | 0.398 INCHES MINIMUM FIRST FLANGE IN |
| Flange Inside Height | 0.402 INCHES MAXIMUM SECOND FLANGE IN |
| Flange Quantity | 2 |
| Voltage Standing Wave Ratio | 1.10 |
| Style Designator | WAVEGUIDE TO WAVEGUIDE |
| Waveguide Inside Width | 0.900 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | INTERNAL, RECTANGULAR EXTERNAL, RECTANGULAR |
| Flange Outside Height | 1.615 INCHES MINIMUM FIRST FLANGE IN |
| Flange Outside Height | 1.635 INCHES MAXIMUM SECOND FLANGE IN |
| Adapter Length | 0.904 INCHES MINIMUM AND 0.916 INCHES MAXIMUM IN |
| Flange Connecting Hole Diameter | 0.169 INCHES MINIMUM AND 0.170 INCHES MAXIMUM SECOND FLANGE SINGLE CONNECTION FACILITY IN |
| Flange Inside Width | 0.898 INCHES MINIMUM FIRST FLANGE IN |
| Flange Inside Width | 0.902 INCHES MAXIMUM SECOND FLANGE IN |
| Thread Direction | RIGHT-HAND FIRST FLANGE SINGLE CONNECTION FACILITY |
| Nominal Thread Size | 0.164 INCHES FIRST FLANGE SINGLE CONNECTION FACILITY IN |
| Waveguide Outside Height | 0.500 INCHES NOMINAL IN |
| Waveguide Outside Width | 1.000 INCHES NOMINAL IN |
| Flange Depth | 0.160 INCHES MINIMUM FIRST FLANGE IN |
| Flange Depth | 0.220 INCHES MAXIMUM SECOND FLANGE IN |
| Flange Outside Width | 1.615 INCHES MINIMUM FIRST FLANGE IN |
| Flange Outside Width | 1.635 INCHES MAXIMUM SECOND FLANGE IN |
| Tubing Twist Type | STEP TWIST SINGLE TUBING SEGMENT |
| Tubing Twist Angle in Deg | 38.0 SINGLE TUBING SEGMENT |
| Insertion Loss in Decibels | 0.10 |
| Waveguide Inside Height | 0.400 INCHES NOMINAL IN |
| Thread Class | 2B FIRST FLANGE SINGLE CONNECTION FACILITY |
| Thread Quantity Per Inch | 32 FIRST FLANGE SINGLE CONNECTION FACILITY |
| Material | ALUMINUM ALLOY SINGLE TUBING SEGMENT |
| Flange Connecting Facility and Quantity | 4 THREADED HOLE(S) FIRST FLANGE SINGLE CONNECTION FACILITY |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 929007-1 | 7/2 Vendor item drawing reference U.S. Government activity |
| X9484 | 3/9 Design control — primary reference Mcs Corporation |
NSN 5985-00-177-9138 is a Adapter,waveguide, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 1095-01-092-9520, 2940-01-699-0355. Verify interchangeability with system specifications before substitution.
Key specifications for 5985-00-177-9138: Tubing Wall Construction Style: SEAMLESS SINGLE TUBING SEGMENT; Flange Inside Height: 0.398 INCHES MINIMUM FIRST FLANGE IN; Flange Inside Height: 0.402 INCHES MAXIMUM SECOND FLANGE IN; Flange Quantity: 2. 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 5985-00-177-9138 has DEMIL Code Q. 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.