Product Details | VARIABLE ATTENUATOR

5985-00-666-2987 A device for reducing the strength of an alternating current signal either continuously or in steps, without causing appreciable signal distortion, by maintaining substantially constant output and/or input impedance match. Continuously variable resistive devices must consist of at least two sections or one section with at least two rotating contacts. The item must have an overall attenuation rating. Includes tandem mounted variable resistors designed to function as an attenuator but whose terminals are not connected. See also RESISTOR, VAIABLE (as modified).

Part Alternates: M421058SUB7PT2, 5985-00-666-2987, 00-666-2987, 5985006662987, 006662987

Electrical and Electronic Equipment Components | Antennas, Waveguides, and Related Equipment

Supply Group (FSG) NSN Assign. NIIN
59 01 JAN 1963 00-666-2987

Drawings & Photos | NSN 5985-00-666-2987


Cross Reference | NSN 5985-00-666-2987

Part Number Cage Code Manufacturer
M421058SUB7PT2 11447 L-3 COMMUNICATIONS CORPORATION DBA COMMUNICATION SYSTEMS - EAST
M421058SUB7PT2 49671 LOCKHEED MARTIN CORP LOCKHEED MARTIN INFORMATION SYSTEMS

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Technical Data | NSN 5985-00-666-2987

Characteristic Specifications
APPLICATION DESIGN AUDIO
SCHEMATIC DIAGRAM DESIGNATOR 1D C
IMPEDANCE RATING IN OHMS 600.0 INPUT-OUTPUT
OVERALL ATTENUATION RANGE IN DECIBELS 0.0 TO 60.0
OVERALL ATTENUATION ACCURACY IN DECIBELS -3.15 TO 3.15
ATTENUATION VARIATION METHOD CONTINUOUS
BODY STYLE 33A CYLINDRICAL W/SIDE TERMINALS
OVERALL LENGTH 2.062 INCHES NOMINAL
OVERALL WIDTH 1.531 INCHES NOMINAL
BODY DIAMETER 1.594 INCHES NOMINAL
BUSHING LENGTH 0.438 INCHES NOMINAL
BODY LENGTH 1.156 INCHES NOMINAL
ADJUSTMENT DEVICE TYPE AND QUANTITY 2 SHAFT
TERMINAL TYPE AND QUANTITY 4 TAB, SOLDER LUG
MOUNTING FACILITY TYPE AND QUANTITY 1 THREADED BUSHING
MOUNTING FACILITY SCREW THREAD SERIES DESIGNATOR UNEF
MOUNTING FACILITY NOMINAL SCREW THREAD DIAMETER 0.375 INCHES
MOUNTING THREAD QUANTITY 32 PER INCH

Restrictions/Controls & Freight Information | NSN 5985-00-666-2987

Category Code Description
Shelf-Life Code:0Nondeteriorative
Hazardous Material Indicator CodePThere is no information in the HMIS; however, the NSN is in an FSC in Table II of Federal Standard 313 and an MSDS may be required by the user. The requirement for an MSDS is dependent on a hazard determination of the supplier or the intended end use of the product
Demilitarization Code:ANon-Munitions List Item/ Non-Strategic List Item - Demilitarization not required.
Controlled Inventory Item Code:UUNCLASSIFIED
Precious Metals Indicator Code:AItem does not contain precious metal
Criticality Code:X The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.
Automatic Data Processing Equipment:0Represents items with no ADP components. NOTE: Codes 1 through 6 are only to be used when the item is Automatic Data Processing Equipment (ADPE) in its entirety and is limited to the type meeting only one of the definitions for codes 1 through 6. (See code 9)
Category Code Description
NMF Description 061700 ELEC APPLIANCES/INSTRUMENTS NOI
Less than car load rating
Less than truck load rating J 100.2
Water commodity Code 658 unknown
Originating Activity Code XX
Air Dimension Code A Shipment is not a consolidation and does not exceed 72 inches in any dimension.
Air Commodity H Signal Corps supplies and equipment, including radio equipment and supplies, communications equipment and supplies, electrical equipment and supplies, etc.
Air Special Handling Z No special handling required.
Special Handling Code 9 unknonwn
HAZMAT
Type of Cargo Z No special type of cargo code applicable

Management | NSN 5985-00-666-2987

Category Code Description
Cognizance Codes9BNavy-owned stocks of DLA material
Naval Inventory Control Point, Mechanicsburg
Source of SupplySMSDefense Logistics Agency
Enterprise Business Systems
AgencyDNDepartment of the Navy
Service OrganizationNU.S. Navy
Acquisition Advice CodesXSEMIACTIVE ITEM-NO REPLACEMENT (NON-STOCKED ITEMS) A potentially inactive NSN which must be retained in the supply system as an item of supply because (1) stocks of the item are on hand or in use below the wholesale level and (2) the NSN is cited in equipment authorization documents TO & E, TA, TM, etc., or in-use assets are being reported. 1. Items are authorized for central procurement but not authorized for stockage at wholesale level. 2. Requisitions for in-use replacement will be authorized in accordance with individual Military Service directives. 3. Requisitions may be submitted as requirements generate. Repetitive demands may dictate an AAC change to permit wholesale stockage.
Controlled Item CodeUUNCLASSIFIED
Shelf Life Code0Nondeteriorative
Purchasing QTY
UOM
1
EA : Each