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Electrical Tachometer Indicator

NSN: 6620-01-278-8028 | Model: 458-50035-502
ITAR Registered seal

An instrument which displays, in units of revolutions per minute, the transmitted rotational speed of a shaft for a specified elapsed time.

NSN Properties and Flags
NATO Stock Number
6620-01-278-8028
DEMIL
Yes - ITAR Controlled (Code B)
Diameter
Between 1.930 inches and 1.940 inches
Length
9.000 inches
Scale Division Quantity
23 single indicator single scale
Current Type
Ac/dc
Ac Voltage Rating
5.0 volts
Dc Voltage Rating
24.0 volts
Contact Quantity
10
End Application
Kc135r
Presentation Type
Dial and digital display
Scale Range
+0.1/+110.0 percent revolutions per minute all indicators all scales
Individual Marking
N2 % rpm; green band 89 to 95%; red radial marking at 105%
Electrical Connection Quantity
1
Electrical Connection Identifying Number
To mate with ms27484t12f98s
Pointer Type
Indicating single pointer
Display Type
Liquid crystal
Display Digit Quantity
4
Criticality Code Justification
Feat
Part Name Assigned By Controlling Agency
N2 tachometer indicator
Special Features
Indicates engine fan speed; vacuum sealed 2 in. Can assembly; weight not to exceed 2.5lbs; white lighted; digital display not required to function after an emp event, dail & pointer are required to funtion; aft95
Supplementary Features
Tech order1c-13 (k) r-4-4 fig 2; part of the pilot/copilot forward panel p/n 458-50046-508 and -513
Reference Number Differentiating Characteristics
As differentiated by repair parts

Pricing and Availability

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NSN 6620-01-278-8028 Datasheet

Supply Class (FSC):
Engine Instruments
Cross Reference:
  • 458-50035-502
  • SEL-C29K
  • 458-50035-502
  • SEL-C29K
Cage Codes:
  • The Boeing Company (CAGE 82918)
  • Ametek, Inc. (CAGE 61349)
Schedule B & Trade:
  • Schedule B: 9029900000 (NAICS 334514)

    Parts and accessories for revolution counters, production counters, taximeters, odometers, pedometers and the like

  • SITC: 87329

    Parts and accessories of revolution and production counters, odometers, pedometers, speedometers, tachometers, strobescopes, etc.

  • End Use: 21160

    Measuring, testing, control instruments

Identification:
HMIC

N - Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.

PMIC

A - Item does not contain precious metal.

ESD

A - No known electrostatic discharge (esd) or electromagnetic interference (emi) sensitivity.

ADPE

- Represents items with no adp components

CRITL

- The item is an aviation critical safety item/flight safety critical aircraft part (acsi/fscap).

Freight Information:
  • NMFC:

    061700 - Elec appliances/instruments noi

  • TCC:

    3 - Electrostatic sensitive device (esd)

  • WCC:

    658 - Electrical appliances, small

  • SHC:

    9 - Other or no special handling required (sh)

  • ACC:

    A - Supplies and equipment for aircraft and aerial targets, including aircraft and maintenance parts, aircraft accessories, aircraft

  • ADC:

    A - Shipment is not a consolidation and does not exceed 84 inches in any dimension.

  • LCL:

    P - 77.5

  • LTL:

    W - Rating variable

NSN Management Codes:
  • SOS
    Fhz
  • AAC
    C
  • Quantity per pack
    1
  • Unit of Measure
    Ea
  • Shelf Life
    N/A
  • Classification Control
    U
  • MGMT_CTL
    Sf8---n
  • Repariability

Questions & Answers:

What are the historical prices recorded for this stock number?
Historical data shows pricing from $15,735.86 to $26,226.43..
Does NSN 6620-01-278-8028 have a shelf life?
No. There is no shelf life applicable for this NSN.
What NATO entities are users of this NSN?
Department Of The Air Force, and Singapore
What is the NIIN of NSN 6620-01-278-8028?
012788028 or 01-278-8028
Does NSN 6620-01-278-8028 require demilitarization?
Yes - ITAR Controlled
What is the most recent solicitation for NSN 6620-01-278-8028?
No solicitations for this NSN.
When was this national stock number assigned to the federal catalog?
May 10, 1988