#MIL-DTL-3971 Hobbs Meter | Time Measuring Instruments

MIL-DTL-3971

Time Totalizing Meter

NSN 6645-01-057-7987

DEMIL
Shelf Life
UOM
NIIN
Demil:
NO
Shelf Life:
N/A
UOM:
1 EA
NIIN:
010577987

Technical Specifications of NSN

Terminal Quantity:
2
Terminal Type:
Solder
Mounting Type:
Flange
Body Diameter:
2.625 inches
Current Type:
Ac
Case Material:
Any acceptable
Mounting Configuration:
Three 0.150 in. Diameter mtg holes on 1.580 in. Radius spaced 120 degrees apart
Indicator Type:
Drum register
Voltage Rating:
120.0 volts
Measurement Unit:
Hours
Unit Type:
Mounted
Mounting Flange Diameter:
3.500 inches
Operating Frequency:
60.0 hertz
Hermetic Protection:
Not provided
Movement Type:
Electrical
Body Depth:
3.000 inches
Smallest Increment Indicated:
0.10
Mounting Method:
Flush
Reset Feature:
Not provided
Maximum Measurement:
99999.90
Marking Color:
White numerals for hours, black numerals for tenths
Background Color:
Black background on hr wheels, white background on tenths wheel
Electrical Movement Type:
Synchronous motor
Nondefinitive Specification/std Data:
A grade and ii type
NSN:
6645-01-057-7987
Item Name:
Hobbs Meter
Cage Code:
81349

Other Related Parts

Part Number
Cage
RNCC
RNVC
RNAAC
Status
MSDS
SADC
Part Number:
M3971/2-2
Cage Code:
81349
RNCC:
2
RNVC:
2
RNAAC:
CX
Status:
A
MSDS:
SADC:
Part Number:
10N-G3
Cage Code:
07446
RNCC:
5
RNVC:
1
RNAAC:
CX
Status:
A
MSDS:
SADC:
Part Number:
10635000
Cage Code:
20227
RNCC:
E
RNVC:
8
RNAAC:
HD
Status:
A
MSDS:
SADC:
Part Number:
1170238
Cage Code:
10001
RNCC:
E
RNVC:
8
RNAAC:
ZZ
Status:
A
MSDS:
SADC:
Part Number:
632E
Cage Code:
14907
RNCC:
E
RNVC:
8
RNAAC:
9Z
Status:
A
MSDS:
SADC:
Part Number:
JBTE31-EX
Cage Code:
31356
RNCC:
E
RNVC:
8
RNAAC:
ZZ
Status:
A
MSDS:
SADC:
Part Number:
NA602789A001
Cage Code:
56232
RNCC:
E
RNVC:
8
RNAAC:
9Z
Status:
A
MSDS:
SADC:
Part Number:
635ES100AA0008A
Cage Code:
25497
RNCC:
E
RNVC:
8
RNAAC:
HD
Status:
A
MSDS:
SADC:
Part Number:
A12574
Cage Code:
82227
RNCC:
E
RNVC:
8
RNAAC:
9Z
Status:
A
MSDS:
SADC:
Part Number:
1170238
Cage Code:
03848
RNCC:
E
RNVC:
8
RNAAC:
ZZ
Status:
A
MSDS:
SADC:
Part Number:
HD654-99999
Cage Code:
28281
RNCC:
E
RNVC:
8
RNAAC:
ZZ
Status:
A
MSDS:
SADC:
Part Number:
465-1051-1
Cage Code:
11530
RNCC:
5
RNVC:
9
RNAAC:
9Z
Status:
A
MSDS:
SADC:
Part Number:
10N-G3-H
Cage Code:
07446
RNCC:
5
RNVC:
9
RNAAC:
CX
Status:
A
MSDS:
SADC:
Part Number:
M3971/2-6
Cage Code:
81349
RNCC:
5
RNVC:
9
RNAAC:
CX
Status:
A
MSDS:
SADC:
Part Number:
MIL-M-3971
Cage Code:
81349
RNCC:
5
RNVC:
9
RNAAC:
CX
Status:
A
MSDS:
SADC:
Part Number:
MS16971-2
Cage Code:
96906
RNCC:
5
RNVC:
9
RNAAC:
SB
Status:
A
MSDS:
SADC:
Part Number:
31EX
Cage Code:
31356
RNCC:
5
RNVC:
9
RNAAC:
ZZ
Status:
A
MSDS:
SADC:
Part Number:
911800077
Cage Code:
11530
RNCC:
5
RNVC:
9
RNAAC:
CL
Status:
A
MSDS:
SADC:

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Catalog Drilldown
--- Instruments And Laboratory Equipment
------ Time Measuring Instruments
--------- Time Totalizing Meters
------------ P/N MIL-DTL-3971

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Last Updated: 06/09/2025