The Flange,waveguide, cataloged under National Stock Number 5985-01-412-1083, 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 9 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-01-412-1083 |
| Primary Part Number | WS90-UG-125-A |
| Item Name | Flange,waveguide |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Frontgrade Technologies Inc. |
| Status | ACTIVE |
| Flange Inside Height | 0.400 INCHES NOMINAL SINGLE FLANGE IN |
| Flange Outside Height | 1.630 INCHES NOMINAL SINGLE FLANGE IN |
| Flange Connecting Hole Diameter | 0.169 INCHES MINIMUM AND 0.172 INCHES MAXIMUM SINGLE FLANGE SINGLE CONNECTION FACILITY IN |
| Flange Inside Width | 0.900 INCHES NOMINAL SINGLE FLANGE IN |
| Flange Depth | 0.125 INCHES NOMINAL SINGLE FLANGE IN |
| Flange Outside Width | 1.630 INCHES NOMINAL SINGLE FLANGE IN |
| Material | ALUMINUM SINGLE TUBING SEGMENT |
| Flange Connecting Facility and Quantity | 4 UNTHREADED HOLE(S) SINGLE FLANGE SINGLE CONNECTION FACILITY |
| Flange Style | CONTACT TYPE SINGLE FLANGE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 1209AS923-2 | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA) |
| WS90-UG-125-A PRIMARY | Frontgrade Technologies Inc. (USA) |
NSN 5985-01-412-1083 is a Flange,waveguide, manufactured by Frontgrade Technologies Inc., classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-412-1083 has 2 manufacturer part numbers on file: 1209AS923-2 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier), WS90-UG-125-A (Frontgrade Technologies Inc.).
Key specifications for WS90-UG-125-A: Flange Inside Height: 0.400 INCHES NOMINAL SINGLE FLANGE IN; Flange Outside Height: 1.630 INCHES NOMINAL SINGLE FLANGE IN; Flange Connecting Hole Diameter: 0.169 INCHES MINIMUM AND 0.172 INCHES MAXIMUM SINGLE FLANGE SINGLE CONNECTION FACILITY IN; Flange Inside Width: 0.900 INCHES NOMINAL SINGLE FLANGE IN. 9 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.
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.