A3T1A

View detailed technical data, stock status, and sourcing information for: A3T1A
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Federal Supply Group

Instruments and Laboratory Equipment

Federal Supply Classification

6620 Engine Instruments

National Stock Number

6620-00-965-9841

Item Name Code

08260

Assigment Date

01/01/1960 (66 years ago)

An item designed to pass all frequencies below a specified frequency. Excludes:a single inductance, a single capacitance, or a single resistance. See coil (as modified); reactor; capacitor (as modified); and resistor (as modified).

3 contact quantity, 3.130 inches nominal width, ac current type, 5.000 inches maximum depth, pin contact type

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Width: 3.130 inches nominal
Current Type: ac
Depth: 5.000 inches maximum
Contact Quantity: 3
Contact Type: pin
Presentation Type: synchro motor
Scale Range: -0.1 to 4500.0 revolutions per minute single indicator single scale
Electrical Connection Quantity: 1
Electrical Connection Identifying Number: drawing no. and1066-14s-1p
Pointer Type: clock-hand single pointer
Mounting Stud Diameter: 0.170 inches nominal
Accuracy Rating: 100.0 revolutions per minute single indicator single scale
Features Provided: integral synchroscope
Height: 3.130 inches nominal
Nondefinitive Spec/Std Data: eru-7/a-1 type
Fsc Application Data: 1. engine

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
6620-00-759-5495	No Name Available	06/22/1974

Related Parts

This NSN group includes multiple components designed to meet specific performance and operational standards. Each listing provides detailed specs, functionality data, and replacement compatibility information:

Part Number	Name
A3T1A	Electrical Tachometer Indicator
MILI19358TYPEERU7A1	Electrical Tachometer Indicator

FAQs

Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.

What is the FSCG of the NSN 6620-00-965-9841?

The FSCG of the NSN 6620-00-965-9841 is 6620

Does the NSN 6620-00-965-9841 have a Schedule B code assigned?

Yes, the Schedule B code is 9029900000

Does NSN 6620-00-965-9841 require demilitarization?

Items subject to the export administration regulations (ear) in parts 730-774 of title 15, code of federal regulations (cfr) (ccli or ear99) and determined by dod to present a low risk when released out of dod control. No demil, mut, or end use certificate is required. May require an export licensefrom doc.

Does NSN 6620-00-965-9841 contain precious materials?

Item does not contain precious metal.

Does NSN 6620-00-965-9841 contain hazardous materials?

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

When the NSN 6620-00-965-9841 was assigned to the Federal Catalog?

It was assigned 66 years ago, on Fri, Jan 1, 1960