WM-4

View detailed technical data, stock status, and sourcing information for: WM-4
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Federal Supply Group

Instruments and Laboratory Equipment

Federal Supply Classification

6625 Electrical and Electronic Properties Measuring and Testing Instruments

National Stock Number

6625-00-886-2981

Item Name Code

28455

Assigment Date

01/01/1962 (64 years ago)

40 single indicator single range scale division quantity, 3000.0 dielectric withstanding voltage in volts, 2.530 inches maximum overall length, dc circuit current for which designed, 0.150 inches nominal mounting hole diameter

Product Characteristics

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

Circuit Current For Which Designed: dc
Dielectric Withstanding Voltage In Volts: 3000.0
Overall Length: 2.530 inches maximum
Mounting Hole Diameter: 0.150 inches nominal
Scale Division Quantity: 40 single indicator single range
Overall Diameter: 3.500 inches maximum
Environmental Protection: shock resistant and vibration resistant
Mounting Bolt Circle Diameter: 3.160 inches nominal
Furnished Items And Quantity: nut 7; washer 3
Indicator Type: dial w/pointer
Installation Design: panel
Mounting Arrangement Style: three hole/stud bolt circle
Dial Scale Marking Color: black single indicator single range
Accuracy In Percent: -2.0 to 2.0 at full scale single indicator single range
Meter Depth Behind Mounting Flange: 1.390 inches maximum
Meter Body Diameter Behind Mounting Flange: 2.760 inches maximum
Movement Type: moving magnet
Background Color: white single indicator single range
Pointer Color: black single indicator single range
Power Source: external
Mounting Facility Type And Quantity: 3 screw and 3 unthreaded hole
Scale Graduation Type: linear single indicator single range
Measurement Range: +0.0 to 20.0 kilowatts single indicator single range
Scale Selection Method: terminal
Features Provided: zero adjuster
Circuit Attachment Method And Quantity: 2 threaded stud
Special Features: ruggedized
Special Markings: blue line at 12.5; red line at 15
Material: steel
Nuclear Hardness Critical Feature: nonhardened
Surface Treatment: enamel
Special Test Features: conforms to mil-m-10304
Style Designator: round flush mtg
Fsc Application Data: test set,elect. equip.

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
IC-4183	Wattmeter
WM-4	Wattmeter

FAQs

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

What is the FSCG of the NSN 6625-00-886-2981?

The FSCG of the NSN 6625-00-886-2981 is 6625

Does the NSN 6625-00-886-2981 have a Schedule B code assigned?

Yes, the Schedule B code is 9030908030

Does NSN 6625-00-886-2981 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 6625-00-886-2981 contain precious materials?

Item does not contain precious metal.

Does NSN 6625-00-886-2981 contain hazardous materials?

Indicates there is no information in the hmirs. The nsn is in a fsc in table ii of fed std 313 and a msds may be required by the user. The requirement for a msds is dependent on a hazard determination of the supplier or the intended end use of item.

When the NSN 6625-00-886-2981 was assigned to the Federal Catalog?

It was assigned 64 years ago, on Mon, Jan 1, 1962