Model: 551

Fixed Moun Mechanical Tachometer

Properties:

Mounting Type

Panel

Drive Connection Type

Square

Overall Diameter

3.570 inches

Mounting Feature Type

Flush

Operating Range

+0.0/+3000.0 revolutions per minute

Graduation Unit

0.1 hour

Case Shape

Round

Scale Measurement Range

+0.0/+3000.0

Scale Quantity

Dial Quantity

Major Graduation Color

White

Dial Background Color

Black

Pointer Quantity

Pointer Color

Black and white

Dial Illumination

Not provided

Scale Smallest Increment

100.0 revolutions per minute

Pointer Movement Direction

Clockwise

Totalizing Mechanism

Provided

Totalizing Mechanism Calibration

Engine hours

Ahead-astern Semaphore

Not provided

Scale Measurement Unit

Revolutions per minute

NSN

6680-00-538-0899

Part Number

551

Description

Tachometer,mechanical,fixed Moun

CAGE

57733

Part 551 NSN 6680-00-538-0899

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

07115

FIIG:

T145-E

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:

177220

UFC:

87150

LTL:

100.0

LCL:

WCC:

653

TCC:

SHC:

ACC:

Trailers/Vehicles

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