Electrical Tachometer Indicator NSN 6620-01-278-8028

Item Description

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

NSN: 6620-01-278-8028

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Features and Characteristics

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

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

Electrical Connection Identifying Number

To mate with ms27484t12f98s

Pointer Type

Indicating single pointer

Display Type

Liquid crystal

Display Digit Quantity

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

FSC

6620 Engine Instruments

NIIN

012788028

NSN

6620012788028

Manufacturer Part Numbers

Part numbers registered to this national stock number.

Part Number

Cage

Status

MSDS

Part Number:

458-50035-502

Cage Code:

82918

Status:

MSDS:

Part Number:

SEL-C29K

Cage Code:

61349

Status:

MSDS:

Foreign Trade & Schedule B

What is a Schedule B number? Find more information at help.cbp.gov

Schedule B Number: 9029900000
NAICS: 334514
SITC: 87329
Description: Parts and accessories for revolution counters, production counters, taximeters, odometers, pedometers and the like
End Use (Code 21160):
Measuring, testing, control instruments

Q & A

Frequently asked questions for NSN 6620-01-278-8028

What are the manufacturers of nsn 6620012788028?

The Boeing Company (82918)
Ametek, Inc. (61349)

Does this nsn 6620012788028 have a shelf life?
No. This NSN does not have an applicable shelf life.

What is the formal definition of nsn 6620012788028
An instrument which displays, in units of revolutions per minute, the transmitted rotational speed of a shaft for a specified elapsed time.

Does nsn 6620012788028 contain any precious metals?
No precious metal content.

Does nsn 6620012788028 contain any hazardous materials?
No MSDS. No hazardous material.

What is the ESD classification of nsn 6620012788028?
No known electrostatic discharge.

Identification Group

Item Identification Guide (IIG) and Item Name Code (INC)

INC

FIIG

App. Key

Cond. Code

Status

INC:

08260

FIIG:

A532Q0

App. Key:

Cond. Code:

Status:

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On Time Delivery
Certificate of Conformance
Quality Inspected Parts
Quality Fast Service