Model: 31F

Electrical Frequency Meter

Properties:

Mounting Hole Diameter

0.125 inches

Overall Diameter

3.250 inches

Mounting Bolt Circle Diameter

2.876 inches

Installation Design

Panel

Mounting Arrangement Style

Three hole/stud bolt circle

Resonant Reed Quantity

Meter Depth Behind Mounting Flange

2.094 inches

Meter Body Diameter Behind Mounting Flange

2.562 inches

Movement Type

Vibrating reed

Mounting Facility Type And Quantity

3 unthreaded hole

Circuit Attachment Method And Quantity

2 threaded stud

Style Designator

Round flush mtg

NSN

6625-00-351-5937

Part Number

31F

Description

Meter,electrical Frequency

CAGE

31356

An instrument which measures the rate of regularly recurring variations in an electric current or voltage and is usually calibrated in hertz (cycles per second or cps). The value may be expressed by means of a pointer and calibrated dial vibrating reed or a digital read out display. For instruments which measure radio frequencies, see calibrator, frequency; and wavementer. excludes: counter electronic digital.

Part 31F NSN 6625-00-351-5937

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

16454

FIIG:

A310A0

Concept No.:

App. Key:

Cond. Code:

Status:

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators

HMIC

PMIC

ESD/EMI

ENAC

MMAC

CRITL

HMIC:

PMIC:

ESD:

MMAC:

CRITL:

Freight Classification

NMFC

UFC

LTL

LCL

WCC

TCC

SHC

ACC

NMFC:

136740

UFC:

68820

LTL:

RATING VARIABLE

LCL:

100.0

WCC:

657

TCC:

SHC:

ACC:

Construction Materials

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Schedule B and Export

Schedule B: 9030908030
SITC: 87479
End Use: Measuring, testing, control instruments
NAICS: 334515
USDA: 1

Freight Class: Parts and accessories of articles of schedule b subheading 9030.39