The Attenuator,variable, cataloged under National Stock Number 5985-00-113-2565, 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 Microwave Development Laboratories, Inc. Dba Microwave Development Laboratories Inc. Government technical data includes 24 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-00-113-2565 |
| Primary Part Number | 62AS129-1K |
| Item Name | Attenuator,variable |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Microwave Development Laboratories, Inc. Dba Microwave Development Laboratories Inc |
| Status | ACTIVE |
| Shaft Type | ROUND |
| Insertion Loss at Minimum Attenuation in Maximum Decibels | 0.5 |
| Waveguide Flange Type | COVER |
| Impedance Rating in Ohms | 50.0 INPUT-OUTPUT |
| Mounting Facility Type and Quantity | 4 THREADED HOLE(S) |
| Frequency Range | 13.270 GIGAHERTZ MINIMUM AND 13.430 GIGAHERTZ MAXIMUM |
| Shaft Diameter | 0.250 INCHES NOMINAL IN |
| Body Style | WAVEGUIDE TYPE |
| Mounting Facility Pattern | FOUR POSITION RECTANGULAR |
| Adjustment Device Type and Quantity | 1 SHAFT |
| Center to Center Distance Between Mounting Facilities Parallel to Length | 0.478 INCHES NOMINAL IN |
| Overall Attenuation Range in Decibels | +0.0 TO 32.0 |
| Voltage Standing Wave Ratio | 1.20 |
| Waveguide Flange Designation | UG-419/U |
| Mounting Facility Screw Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Overall Attenuation Accuracy in Decibels | -2.00 TO 2.00 |
| Attenuation Variation Method | CONTINUOUS |
| Mounting Thread Quantity | 32 PER INCH |
| Shaft Length | 0.500 INCHES NOMINAL IN |
| Mounting Facility Nominal Screw Thread Diameter | 0.138 INCHES IN |
| Center to Center Distance Between Mounting Facilities Parallel to Width | 0.676 INCHES NOMINAL IN |
| Application Design | WAVEGUIDE |
| Terminal Type and Quantity | 2 FLANGE |
| Power Rating | 0.01 MILLIWATTS AVERAGE |
| 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 |
|---|---|
| 62AS129-1K | Microwave Development Laboratories, Inc. Dba Microwave Development Laboratories Inc (USA) |
| Reference | Meaning |
|---|---|
| G5185-013 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| AT622BRASS | 5/9 Secondary reference Atlantic Microwave Corporation Div Cobham Electronic Systems |
| G128-115-001 | 3/2 Design control — primary reference U.S. Government activity |
| G5185-013BRASS | 5/2 Secondary reference U.S. Government activity |
| G128-115-001BRASS | 5/9 Secondary reference U.S. Government activity |
NSN 5985-00-113-2565 is a Attenuator,variable, manufactured by Microwave Development Laboratories, Inc. Dba Microwave Development Laboratories Inc, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-00-113-2565 has 1 manufacturer part number on file: 62AS129-1K (Microwave Development Laboratories, Inc. Dba Microwave Development Laboratories Inc).
Key specifications for 62AS129-1K: Shaft Type: ROUND; Insertion Loss at Minimum Attenuation in Maximum Decibels: 0.5; Waveguide Flange Type: COVER; Impedance Rating in Ohms: 50.0 INPUT-OUTPUT. 24 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 5985-00-113-2565 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.