2553GN

View detailed technical data, stock status, and sourcing information for: 2553GN

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2553GN
Federal Supply Group
Engine Accessories
National Stock Number
2920-00-640-7546
Item Name Code
17311
Assigment Date
01/01/1963 (63 years ago)

"a generator primarily designed to be mounted on an internal combustion engine, and to be driven by the engine to keep the battery in a charged condition. May also supply current for the engine ignition system and/or electrical equipment which is connected to the battery circuit. Includes alternating current generators designed for use with a rectifier. Excludes:the major generator of "generating sets". For generators specifically designed for aircraft use and not mounted on the engine, see generator, direct current."

right-hand thread direction, 0.250 inches nominal keyway width, 0.874 inches nominal second step diameter, radio interference shielding furnished items, 0.625 inches nominal thread length

Product Characteristics

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

Thread Direction
right-hand
Thread Length
0.625 inches nominal
Furnished Items
radio interference shielding
Second Step Diameter
0.874 inches nominal
Keyway Width
0.250 inches nominal
Unthreaded Portion Length
1.688 inches nominal
Mounting Hole Thread Direction
right-hand
Mounting Style
body mtd w/four threaded mtg holes
Environmental Protection
corrosion resistant and fungus resistant
Keyway Length
1.000 inches nominal
Submersibility
nonsubmersible
Shaft Rotation Direction
counterclockwise
Distance From End To Keyway Center
1.250 inches nominal
Thread Diameter
0.625 inches nominal
Armature Minimum Speed In Rpm At Full Current Output
1330
Maximum Output Current Rating In Amps
17.5
Minimum Current Cut-In Speed In Rpm
1050
Shaft Drive End Style
straight shaft end, threaded, w/keyway
Distance From Raised Face To First Mounting Hole Center
3.125 inches nominal
Angular Deviation Of First Hole From Top Center In Deg
135.0
Angular Deviation Of Second Hole From First Hole In Deg
90.0
Distance From Raised Face To Second Mounting Center
6.625 inches nominal
Maximum Rated Armature Speed In Rpm
4700
Thread Series
unf
Thread Class
2a
Mounting Hole Thread Series Designator
unc
Mounting Hole Thread Diameter
0.375 inches nominal
Mounting Hole Thread Quantity Per Inch
16
Mounting Hole Thread Class
2b
Thread Quantity Per Inch
18
Voltage In Volts
28.0

Replaces National Stock Numbers

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

NSN Name Date
2920-00-294-3938 No Name Available 06/09/1972

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
25061 Engine Accessory Generator
2553GN Engine Accessory Generator
G001-2553GN Engine Accessory Generator
G0012553GN Engine Accessory Generator

FAQs

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

What is the FSCG of the NSN 2920-00-640-7546?
The FSCG of the NSN 2920-00-640-7546 is 2920
Does the NSN 2920-00-640-7546 have a Schedule B code assigned?
Yes, the Schedule B code is 8511500000
Does NSN 2920-00-640-7546 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 2920-00-640-7546 contain precious materials?
Item does not contain precious metal.
Does NSN 2920-00-640-7546 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 2920-00-640-7546 was assigned to the Federal Catalog?
It was assigned 63 years ago, on Tue, Jan 1, 1963

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