Model: 551AMB

Fixed Moun Mechanical Tachometer

Special Features:

Hourmeter calibrated 2200 rpm at 1042 hours

Properties:

Mounting Type
Panel
Drive Connection Type
Flexible
Overall Depth
2.656 inches
Overall Diameter
2.844 inches
Case Material
Steel
Mounting Feature Type
Flush
Shaft Rotation Direction
Counterclockwise
Operating Range
+0.0/+4500.0 revolutions per minute
Graduation Unit
1 hr operation
Case Shape
Round
Scale Measurement Range
+0.0/+4000.0
Unit Type
Magnetic
Scale Quantity
1
Dial Quantity
1
Major Graduation Color
Luminous
Minor Graduation Color
White
Dial Background Color
Black
Pointer Quantity
1
Pointer Finish
Fluorescent
Pointer Color
White
Dial Illumination
Not provided
Scale Smallest Increment
100.0 revolutions per minute
Scale Finish
Fluorescent
Driven Speed To Indicated Speed Minimum Ratio
0.473 to 1
Totalizing Mechanism
Provided
Totalizing Mechanism Calibration
Hours operated
Ahead-astern Semaphore
Not provided
Scale Measurement Unit
Revolutions per minute
Criticality Code Justification
Feat and akct
NSN
6680-00-634-9386
Part Number
551AMB
Description
Tachometer,mechanical,fixed Moun
CAGE
57733

Part 551AMB NSN 6680-00-634-9386

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
07115
FIIG:
T145-E
Concept No.:
1
App. Key:
EA
Cond. Code:
1
Status:
A

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators
HMIC
PMIC
ESD/EMI
ENAC
MMAC
CRITL
HMIC:
N
PMIC:
A
ESD:
ESD:
MMAC:
SX
CRITL:
Y

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
177220
UFC:
87150
LTL:
100.0
LCL:
--
WCC:
653
TCC:
Z
SHC:
9
ACC:
Trailers/Vehicles

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