The Waveguide Assembly, cataloged under National Stock Number 5985-01-039-5976, 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 13 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-01-039-5976 |
| Primary Part Number | 117887 |
| Item Name | Waveguide Assembly |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Frontgrade Technologies Inc. |
| Status | ACTIVE |
| Flange Inside Height | 1.338 INCHES MINIMUM AND 1.342 INCHES MAXIMUM SECOND FLANGE IN |
| Flange Inside Height | 1.338 INCHES MINIMUM AND 1.342 INCHES MINIMUM FIRST FLANGE IN |
| Flange Quantity | 2 |
| Voltage Standing Wave Ratio | 1.07 |
| Operating Pressure | 2.7 POUNDS PER SQUARE INCH GAUGE (PSIG) MAXIMUM LBS |
| Flange Outside Height | 3.000 INCHES NOMINAL FIRST FLANGE IN |
| Flange Outside Height | 5.000 INCHES NOMINAL SECOND FLANGE IN |
| Flange Inside Width | 2.840 INCHES NOMINAL SECOND FLANGE IN |
| Flange Inside Width | 2.838 INCHES MINIMUM AND 2.842 INCHES MAXIMUM FIRST FLANGE IN |
| Insertion Loss in Decibels | 0.05 |
| Surface Treatment | CHROMATE ALL FLANGE INSIDE SURFACES |
| Flange Style | CONTACT TYPE FIRST FLANGE |
| Flange Style | CONTACT 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 |
|---|---|
| 117887 | Frontgrade Technologies Inc. (USA) |
| Reference | Meaning |
|---|---|
| 582R642H05 | 5/9 Secondary reference Bright Lights Usa, Inc Dba Blusa Defense Manufacturing |
| 582R642H05 | 3/2 Design control — primary reference U.S. Government activity |
| 117887 | 5/9 Secondary reference U.S. Government activity |
NSN 5985-01-039-5976 is a Waveguide Assembly, manufactured by Frontgrade Technologies Inc., classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-039-5976 has 1 manufacturer part number on file: 117887 (Frontgrade Technologies Inc.).
1 possible match (shared part number, not a government interchangeability claim): 5310-01-127-1531. Verify interchangeability with system specifications before substitution.
Key specifications for 117887: Flange Inside Height: 1.338 INCHES MINIMUM AND 1.342 INCHES MAXIMUM SECOND FLANGE IN; Flange Inside Height: 1.338 INCHES MINIMUM AND 1.342 INCHES MINIMUM FIRST FLANGE IN; Flange Quantity: 2; Voltage Standing Wave Ratio: 1.07. 13 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 5985-01-039-5976 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.