Model: 4991-027

Electrical Frequency Meter

Special Features:

120v and 400hz rated voltage and freq

Properties:

Center To Center Distance Between Mounting Facilities Parallel To Length
3.376 inches
Center To Center Distance Between Mounting Facilities Parallel To Width
3.376 inches
Overall Height
4.687 inches
Overall Width
4.687 inches
Mounting Stud Length
1.469 inches
Furnished Items And Quantity
Impedor 1
Indicator Type
Dial w/pointer
Installation Design
Panel
Mounting Arrangement Style
Four hole/stud rectangular/square
Frequency Response Range
+350.000/+450.000 hertz
Unable To Decode
Unable to decode or unable to decode
Meter Depth Behind Mounting Flange
3.875 inches
Meter Body Diameter Behind Mounting Flange
4.000 inches
Mounting Facility Type And Quantity
4 threaded stud
Measurement Range
+350.0/+450.0 hertz single indicator single range
Mounting Stud Diameter
0.250 inches
Features Provided
Zero adjuster
Circuit Attachment Method And Quantity
3 solder stud
Nuclear Hardness Critical Feature
Nonhardened
Style Designator
Rectangular flush mtg
Fsc Application Data
Test set, elect. Equip.
NSN
6625-00-879-4101
Part Number
4991-027
Description
Meter,electrical Frequency
CAGE
15309

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 4991-027 NSN 6625-00-879-4101

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
16454
FIIG:
A310A0
Concept No.:
App. Key:
A
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:
P
PMIC:
A
ESD:
ESD:
MMAC:
TG
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
6.1000lbs
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
O
SPI No.:
SPI Rev.:
SPC Mkg:
00
LVL_A:
Q
LVL_B:
Q

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
136740
UFC:
68820
LTL:
RATING VARIABLE
LCL:
--
WCC:
657
TCC:
Z
SHC:
9
ACC:
Instruments/Radio

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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

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