#7839451 Head Assembly Tachometer | Engine Instruments

7839451

Electrical Tachometer Indicator

NSN 6620-00-139-1064

DEMIL
Shelf Life
UOM
NIIN
Demil:
DEMIL/MLI
Shelf Life:
N/A
UOM:
1 EA
NIIN:
001391064

Product Features

Ranges: 0-70, 000 rpm digital, 0-130.0% rpm digital and 0-125% rpm analog; accuracy digital +/- 0.4% of reading and analog +/- 1.0% full scale; readout light display, digital; input signal tach generator mil-g-9398 rotates at 4200 rpm = 70 cps when engine is at 100% rotor speed; sampling rate 0.2 -3 seconds

Technical Specifications of NSN

Width:
6.100 inches
Length:
12.000 inches
Current Type:
Ac
Ac Voltage Rating:
Between 105.0 volts and 125.0 volts
Frequency Rating:
60.0 hertz
Contact Quantity:
7
End Application:
A/m37t engine test stand
Contact Type:
Pin
Presentation Type:
Dial and digital display
Electrical Connection Quantity:
1
Electrical Connection Identifying Number:
Ms3102e-14s-7p
Part Name Assigned By Controlling Agency:
Speed indicator
Height:
6.200 inches
Supplementary Features:
T.O. 33d4-6-212-41
NSN:
6620-00-139-1064
Item Name:
Head Assembly Tachometer
Cage Code:
14010

Other Related Parts

Part Number
Cage
RNCC
RNVC
RNAAC
Status
MSDS
SADC
Part Number:
8000-5121-00
Cage Code:
14010
RNCC:
3
RNVC:
2
RNAAC:
ZZ
Status:
A
MSDS:
SADC:
Part Number:
CD8752QA
Cage Code:
14010
RNCC:
5
RNVC:
2
RNAAC:
ZZ
Status:
A
MSDS:
SADC:
Part Number:
CD8752Q
Cage Code:
14010
RNCC:
5
RNVC:
9
RNAAC:
ZZ
Status:
A
MSDS:
SADC:
Part Number:
PDSAAMAMME71-251
Cage Code:
98752
RNCC:
D
RNVC:
9
RNAAC:
ZZ
Status:
A
MSDS:
SADC:
Part Number:
PDSAAMAMME71-251
Cage Code:
98750
RNCC:
D
RNVC:
9
RNAAC:
SB
Status:
A
MSDS:
SADC:

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Catalog Drilldown
--- Instruments And Laboratory Equipment
------ Engine Instruments
--------- Electrical Tachometer Indicators
------------ P/N 7839451

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Last Updated: 06/15/2025