MM25K

View detailed technical data, stock status, and sourcing information for: MM25K
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Federal Supply Group

Electrical and Electronic Equipment Components

Federal Supply Classification

5905 Resistor

National Stock Number

5905-00-253-8770

Item Name Code

37406

Assigment Date

01/01/1963 (63 years ago)

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), if given, of the output is greater than plus or minus 1 percent on linear outputs. Specified outputs such as sine, cosine, tangent, and the like, 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, wire wound, nonprecision; resistor (1), variable, nonwire wound precision; and resistor (1), variable, wire wound, precision.

2 section quantity, cylindrical bushing mounted body style, not established reliability indicator, 1.609 inches minimum and 1.641 inches maximum body diameter, 0.234 inches minimum and 0.266 inches maximum shaft diameter

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Section Quantity: 2
Body Style: cylindrical bushing mounted
Reliability Indicator: not established
Body Diameter: 1.609 inches minimum and 1.641 inches maximum
Shaft Diameter: 0.234 inches minimum and 0.266 inches maximum
Shaft Length: 1.312 inches nominal
Mounting Bushing Length: 0.375 inches nominal
Body Length: 1.125 inches nominal
Overall Diameter: 2.047 inches minimum and 2.078 inches maximum
Shaft Style: round
Actuator Type: single shaft
Effective Electrical Rotation In Deg Angular Rotation: 275.0 nominal
Nonturn Device Location: at 3 oclock and at 9 oclock
Nonturn Device Radius: 0.516 inches minimum and 0.547 inches maximum
Screw Thread Diameter: 0.375 inches nominal
Screw Thread Series Designator: unef
Screw Thread Quantity Per Inch: 32.0
Terminal Location: radially positioned over less than half the circumference
Mounting Method: standard bushing
Electrical Resistance Per Section: 25.0 kilohms all sections
Rotary Actuator Travel In Angular Deg: 300.0 nominal
Power Dissipation Rating Per Section In Watts: 4.0 free air all sections
Resistance Tolerance Per Section In Percent: -10.0 to 10.0 all sections
Actuator Travel Control Feature: stops
Ambient Temp In Deg Celsius Per Section At Full Rated Power: 40.0 all sections
Precious Material And Location: terminals silver
Precious Material: silver
Terminal Type And Quantity: 6 tab, solder lug

Related Parts

This NSN group includes multiple components designed to meet specific performance and operational standards. Each listing provides detailed specs, functionality data, and replacement compatibility information:

Part Number	Name
M25MP	Resistor,variable,wire Wound,non
MM25K	Resistor,variable,wire Wound,non

FAQs

Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.

What is the FSCG of the NSN 5905-00-253-8770?

The FSCG of the NSN 5905-00-253-8770 is 5905

Does the NSN 5905-00-253-8770 have a Schedule B code assigned?

Yes, the Schedule B code is 8533390080

Does NSN 5905-00-253-8770 require demilitarization?

Items subject to the export administration regulations (ear) in parts 730-774 of title 15, code of federal regulations (cfr) (ccli or ear99) and determined by dod to present a low risk when released out of dod control. No demil, mut, or end use certificate is required. May require an export licensefrom doc.

Does NSN 5905-00-253-8770 contain precious materials?

Item contains silver.

Does NSN 5905-00-253-8770 contain hazardous materials?

Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.

When the NSN 5905-00-253-8770 was assigned to the Federal Catalog?

It was assigned 63 years ago, on Tue, Jan 1, 1963