The Attenuator,variable, cataloged under National Stock Number 5985-00-313-2436, 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 Merrimac Industries, Inc. Government technical data includes 20 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5985-00-313-2436 |
| Primary Part Number | AU25K5NASD |
| Item Name | Attenuator,variable |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Merrimac Industries, Inc |
| Status | ACTIVE |
| Shaft Type | ROUND, SLOTTED |
| Insertion Loss at Minimum Attenuation in Maximum Decibels | 0.5 |
| Mounting Facility Type and Quantity | 4 UNTHREADED HOLE(S) |
| Frequency Range | 400.000 MEGAHERTZ MINIMUM AND 5900.000 MEGAHERTZ MAXIMUM |
| Shaft Diameter | 0.250 INCHES NOMINAL IN |
| Body Style | COAXIAL TYPE |
| Mounting Facility Pattern | FOUR POSITION RECTANGULAR |
| Adjustment Device Type and Quantity | 1 SHAFT |
| Center to Center Distance Between Mounting Facilities Parallel to Length | 1.250 INCHES NOMINAL IN |
| Overall Attenuation Range in Decibels | +0.0 TO 30.0 |
| Voltage Standing Wave Ratio | 1.35 |
| Unthreaded Mounting Hole Diameter | 0.140 INCHES NOMINAL IN |
| Overall Attenuation Accuracy in Decibels | -0.25 TO 0.25 |
| Attenuation Variation Method | CONTINUOUS |
| Shaft Length | 0.480 INCHES NOMINAL IN |
| Center to Center Distance Between Mounting Facilities Parallel to Width | 1.812 INCHES NOMINAL IN |
| Application Design | TRANSMISSION LINE |
| Terminal Type and Quantity | 1 CONNECTOR, COAXIAL, MALE AND 1 CONNECTOR, COAXIAL, FEMALE |
| Power Rating | 4.0 WATTS AVERAGE |
| Coaxial Connector Series Designation | N |
| 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 |
|---|---|
| 562060-1 | Lockheed Martin Corporation Div Rms - Mitchel Field (USA) |
| AU25K5NASD PRIMARY | Merrimac Industries, Inc (USA) |
| Reference | Meaning |
|---|---|
| 2920019-001 | 7/2 Vendor item drawing reference Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
NSN 5985-00-313-2436 is a Attenuator,variable, manufactured by Merrimac Industries, Inc, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-00-313-2436 has 2 manufacturer part numbers on file: 562060-1 (Lockheed Martin Corporation Div Rms - Mitchel Field), AU25K5NASD (Merrimac Industries, Inc).
Key specifications for AU25K5NASD: Shaft Type: ROUND, SLOTTED; Insertion Loss at Minimum Attenuation in Maximum Decibels: 0.5; Mounting Facility Type and Quantity: 4 UNTHREADED HOLE(S); Overall Height: 3.750 INCHES NOMINAL IN. 20 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 5985-00-313-2436 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.