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Datasheet. 2548955 specification
Section Quantity
The number of individual elements.
The number of individual elements.
1
Body Style
The style designation indicating the configuration that most nearly corresponds to the appearance of the body.
The style designation indicating the configuration that most nearly corresponds to the appearance of the body.
cylindrical bushing mounted
Reliability Indicator
An indication that the level of probability that an item will operate without failure,at a specified rated capability,at a specified temperature,and for a specified period of time,has been established by testing random samples of production lot.
An indication that the level of probability that an item will operate without failure,at a specified rated capability,at a specified temperature,and for a specified period of time,has been established by testing random samples of production lot.
not established
Overall Length
The dimension measured along the longitudinal axis with terminated points at the extreme ends of the item.
The dimension measured along the longitudinal axis with terminated points at the extreme ends of the item.
2.850in. and 2.910in. ⁓2-59/64"
Body Diameter
The length of a straight line which passes through the center of the body,and terminates at the circumference.
The length of a straight line which passes through the center of the body,and terminates at the circumference.
1.437in.
Shaft Diameter
The length of a straight line which passes through the center of a shaft,and terminates at the circumference.
The length of a straight line which passes through the center of a shaft,and terminates at the circumference.
0.249in.
Shaft Length
A measurement of the longest dimension of the shaft,in distinction from width.
A measurement of the longest dimension of the shaft,in distinction from width.
0.850in. and 0.910in.
Mounting Bushing Length
0.380in.
Body Length
A measurement of the longest dimension of the body,in distinction from width.
A measurement of the longest dimension of the body,in distinction from width.
2.000in.
Overall Diameter
A measurement of the longest straight line across a circular cross-sectional plane.
A measurement of the longest straight line across a circular cross-sectional plane.
1.437in. ⁓1-7/16"
Shaft Style
The style designation indicating the configuration that most nearly corresponds to the appearance of the shaft.
The style designation indicating the configuration that most nearly corresponds to the appearance of the shaft.
round, slotted
Shaft Bearing Type
Indicates the type of shaft bearing/s/ furnished.
Indicates the type of shaft bearing/s/ furnished.
sleeve
Switch Type
Indicates the type of switch included in the item.
Indicates the type of switch included in the item.
rotary
Switch Voltage Rating In Volts
The voltage for which the switch is rated for normal operation,expressed in volts.
The voltage for which the switch is rated for normal operation,expressed in volts.
28.0
Actuator Type
Indicates the type of facility or arrangement provided for moving the variable contact(s).
Indicates the type of facility or arrangement provided for moving the variable contact(s).
single shaft
Effective Electrical Rotation In Deg Angular Rotation
That part of the total rotational travel of the actuator that produces a change in output,expressed in degree angular rotation.
That part of the total rotational travel of the actuator that produces a change in output,expressed in degree angular rotation.
351.0 and 353.0
Maximum Starting Torque
The maximum amount of turning force required to initiate the actuator movement.
The maximum amount of turning force required to initiate the actuator movement.
1.00 INCH-Ounces
Maximum Running Torque
The maximum amount of force requred to maintain actuator movement.
The maximum amount of force requred to maintain actuator movement.
1.00 INCH-Ounces
Maximum Stop Torque
The maximum amount of turning force that can be applied through the operating shaft with0ut damage to the stops.
The maximum amount of turning force that can be applied through the operating shaft with0ut damage to the stops.
80.00 INCH-Ounces
Shaft End Play
The total axial excursion of the shaft measured at the end of the shaft with a specified axial load applied alternately in the opposite directions.
The total axial excursion of the shaft measured at the end of the shaft with a specified axial load applied alternately in the opposite directions.
0.01000in.
Shaft Runout
The eccentricity of the shaft diameter with respect to the rotational axis of the shaft,measured at a specified distance from the end of the shaft,when the body of the item is held fixed and the shaft is rotated with a specified load applied radially to the shaft.
The eccentricity of the shaft diameter with respect to the rotational axis of the shaft,measured at a specified distance from the end of the shaft,when the body of the item is held fixed and the shaft is rotated with a specified load applied radially to the shaft.
0.020in.
Shaft Radial Play
The total radial excursion of the shaft measured at a specified distance from the front surface of the unit with a specified radial load applied alternately in opposite directions at a specified point.
The total radial excursion of the shaft measured at a specified distance from the front surface of the unit with a specified radial load applied alternately in opposite directions at a specified point.
0.010in.
Mechanical Backlash In Deg Angular Rotation
The maximum difference of shaft position that occurs when the shaft is moved to the same actual output ratio point from opposite directions,expressed in degree angular rotation.
The maximum difference of shaft position that occurs when the shaft is moved to the same actual output ratio point from opposite directions,expressed in degree angular rotation.
0.25
Switch Operating Position
The definitive positional point at which the switch operates /starting with the actuator in extreme counterclockwise position and moving clockwise for rotary actuated resistors;starting with actuator full retracted /pushed in/ for longitudinally actuated resistors/.
The definitive positional point at which the switch operates /starting with the actuator in extreme counterclockwise position and moving clockwise for rotary actuated resistors;starting with actuator full retracted /pushed in/ for longitudinally actuated resistors/.
start of rotation
Switch Contact Arrangement
A designation that describes the basic electrical configuration of a switch.
A designation that describes the basic electrical configuration of a switch.
single pole, double throw, three positions maintained
Screw Thread Diameter
The length of a straight line which passes through the center of a coaxial cylinder which would bound the crest of an external thread or the root of an internal thread.
The length of a straight line which passes through the center of a coaxial cylinder which would bound the crest of an external thread or the root of an internal thread.
0.375in.
Screw Thread Series Designator
A designation distinguishing one group of screw thread diameter-pitch combinations from another by the number of threads per measurement scale for a specific diameter.
A designation distinguishing one group of screw thread diameter-pitch combinations from another by the number of threads per measurement scale for a specific diameter.
unef
Screw Thread Quantity Per Inch
The number of screw threads on the item per linear inch measured on a line parallel to the thread axis,including incomplete threads.
The number of screw threads on the item per linear inch measured on a line parallel to the thread axis,including incomplete threads.
32.0
Terminal Location
The position of the terminal/s/ for making connection to an item.
The position of the terminal/s/ for making connection to an item.
rear end
Mounting Method
The means of attaching the item.
The means of attaching the item.
standard bushing
Electrical Resistance Per Section
A measure of the opposition to the flow of direct or alternating current per section.
A measure of the opposition to the flow of direct or alternating current per section.
20.000 kilohms single section
Rotary Actuator Travel In Angular Deg
The measurement of the rotary mechanical motion of the actuating shaft of an item,expressed in degrees.
The measurement of the rotary mechanical motion of the actuating shaft of an item,expressed in degrees.
350.0 and 354.0
Function Conformity Tolerance Per Section
The permissible range per section by which the actual value of resistance or voltage at any specified point may deviate from the theoretical value for the linear or nonlinear function,expressed as a minus and plus percent.
The permissible range per section by which the actual value of resistance or voltage at any specified point may deviate from the theoretical value for the linear or nonlinear function,expressed as a minus and plus percent.
-1.00/+1.00 single section
Temp Coefficient Of Resistance Per Section In Ppm Per Deg Celsius
A constant that represents the proportionate change in resistance caused by a change in temperature per section,expressed in parts per million per degree celsius.
A constant that represents the proportionate change in resistance caused by a change in temperature per section,expressed in parts per million per degree celsius.
-70.0/+70.0 single section
Power Dissipation Rating Per Section In Watts
The maximum amount of electrical energy that can be expended per section,expressed in watts.
The maximum amount of electrical energy that can be expended per section,expressed in watts.
3.0 free air single section
Function Conformity Per Section
The fidelity of the relationship between the actual function characteristics and the theoretical function per section.
The fidelity of the relationship between the actual function characteristics and the theoretical function per section.
single section independent linearity
Fixed Tap Quantity Per Section
The number of fixed terminals at points between the end terminals that provide connection to the intermediate values of the total value per section.
The number of fixed terminals at points between the end terminals that provide connection to the intermediate values of the total value per section.
1 single section
Tap Location Tolerance Per Section
The limits of permissible variation from the rated value of the location of a tap per section.
The limits of permissible variation from the rated value of the location of a tap per section.
-500.0/+500.0 ohms single section
Resistance Tolerance Per Section In Percent
The limits of permissible variation in the electrical resistance value per section of an item from its rated value,expressed in percent.
The limits of permissible variation in the electrical resistance value per section of an item from its rated value,expressed in percent.
-5.0/+5.0 single section
Actuator Travel Control Feature
The feature that controls the actuator travel.
The feature that controls the actuator travel.
stops
Tap Location From Ccw Terminal Per Section In Ohms
Indicates the location of a tap relative to the counterclockwise terminal per section,expressed in ohms.
Indicates the location of a tap relative to the counterclockwise terminal per section,expressed in ohms.
10000.0 single section
Function Characteristic Per Section
The specified mathematical relation per section between the terminal resistance,or output ratio,and the rotation of the actuator.
The specified mathematical relation per section between the terminal resistance,or output ratio,and the rotation of the actuator.
single section linear
Ambient Temp In Deg Celsius Per Section At Full Rated Power
The ambient temperature,expressed in degrees celsius,of the medium surrounding each section at which it can be operated continuously at full rated power.
The ambient temperature,expressed in degrees celsius,of the medium surrounding each section at which it can be operated continuously at full rated power.
40.0 single section
Switch Current Type And Rating In Amps
Indicates the type of electrical current and the capacity for normal operation of the switch,expressed in amperes.
Indicates the type of electrical current and the capacity for normal operation of the switch,expressed in amperes.
0.100 dc
Special Features
Those unusual or unique characteristics or qualities of an item not covered in the other requirements and which are determined to be essential for identification.
Those unusual or unique characteristics or qualities of an item not covered in the other requirements and which are determined to be essential for identification.
w/special features for proper functioning of the item
Terminal Type And Quantity
Indicates the type and number of terminals for providing electrical connection.
Indicates the type and number of terminals for providing electrical connection.
4 tab w/screw
Answers.
What quantity is this sold in?
1EA
How is this classified for shipping?
Schedule B number: 8533390080
nmfc 062960
Wirewound variable resistors
What's the federal classification of 2548955?
FSC 5905 ⁓ Resistors
Excluding resistance wire.
NSN 5905-00-928-9056 RESISTOR,VARIABLE,WIRE WOUND,PRE
w/special features for proper functioning of the item 2.850" overall length
- NIIN
- 009289056
- NIIN Date
- 09/02/66
- Schedule B
- 8533390080
- Name Code
- 37408
- FIIG
- A002A0
- Item Weight
- 0.300lbs
- Item Dimensions
- --
- QUP
- 1
- Historical Price
- $1,111.38 EA
- DEMIL / ITAR
- Uncontrolled item (Code A)
- Hazmat
- No hazard information available from HMIRS.
- MSDS
- N/A
- Precious Metals
- No precious metals
- Enviromental
- N/A
- Electrostatic ESD & EMI
- No ESD or EMI sensitivity
Major End Users Countries and entities
- - Department of The Navy
- - Italy
Availability for 2548955 A member of our team will provide you with a price and availability quote
Request a Quote »Shipping Information
- Special Handling
- Other or no special handling required (sh)
- LTL (less than a truck load rating)
- 77.5
- LCL (less than a car load rating)
- 77.5
- Special Cargo
- No special type of cargo code applicable
- Air Freight (Minimum cargo door size required)
- Shipment is not a consolidation and does not exceed 84 inches in any dimension.
- Customs Requirement Classification
- Instruments/equipment/supplies for radio, communications, electrical, laboratory, etc. (includes signal corps)
- Commodity (for shipments via water)
- Electrical appliances, small
- NMFC (national motor freight code)
- 062960 REOSTATS/PARTS NOI
- UFC (universal freight code)
- 35140
Similar by Design Other resistors with similar characteristics
Nothing similar to this part number was found in our inventory
2548955 / Resistor,variable,wire wound,preWhat is the formal definition of this item?
A resistor in which a sliding or rolling contact moves over an exposed area of the resistive element to change the ohmic value of the output. the functional tolerance (linearity) of the output is equal to or less than plus or munus 1 percent on linear outputs. specified outputs such as sine, cosine, tangent, etc., shall be considered to be precision. for items having manually positioned taps designed to be set and fixed prior to use, see resistor, adjustable, for items with step by step variation, see rheostat and resistor, step by step. for tandem-mounted items designed to function together as an attenuator (and rated accordingly), see attenuator, variable. excludes resistor (1), variable, nonwire wound, nonprecision; resistor (1), variable, nonwire wound, precision; and resistor (1), variable, wire wound, nonprecision.
