Engine Accessory Generator
938249
(NSN) National Stock Number
2920-00-008-9912
Federal Supply Classification
2920 Nonaircraft Engine Electrical System Components
Item Name Code
17311
Schedule B Code
8511500000
Summary
Right-hand thread direction, 0.390 inches nominal thread length, 2.000 inches nominal pilot diameter, cooling fan and lockwasher and nut and woodruff key furnished items, 0.627 inches nominal second step diameter, 0.125 inches nominal keyway width
| DAC | HCC | DMIL | RNCC |
|---|---|---|---|
| 3 | - | - | 5 |
| RNVC | SADC | MSDS | RNAAC |
|---|---|---|---|
| 2 | - | - | AX |
Identification
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.
| INC | FIIG | Concept | Condition |
|---|---|---|---|
| 17311 | A14700 | 1 | 2 |
Specifications
Thread Direction
right-hand
Details
The direction of the thread when viewed axially. a right-hand thread winds in a clockwise direction while a left-hand thread winds in a counterclockwise direction.Thread Length
0.390 inches nominal
Details
A measurement of the extent of threads,including incomplete threads,along a line parallel to the longitudinal axis.Pilot Diameter
2.000 inches nominal
Details
The length of a straight line which passes through the center of that portion used to guide the item and terminates at the circumference.Furnished Items
cooling fan and lockwasher and nut and woodruff key
Details
Items furnished as accessories which are not specified elsewhere.Second Step Diameter
0.627 inches nominal
Details
None.Keyway Width
0.125 inches nominal
Details
A measurement taken at right angles to the length of a keyway,in distinction from thickness.Unthreaded Portion Length
0.625 inches nominal
Details
None.Mounting Hole Thread Direction
right-hand
Details
The direction of the mounting hole thread when viewed axially. a right-hand thread winds in a clockwise direction while a left-hand thread winds in a counterclockwise direction.Mounting Style
flange mtd w/two mtg holes, top hole threaded
Details
The style designation indicating the configuration that most nearly corresponds to the appearance of the mounting.Pilot Height
0.375 inches nominal
Details
None.Keyway Length
0.625 inches nominal
Details
A measurement of the longest dimension of a keyway,in distinction from width.Submersibility
nonsubmersible
Details
An indication of whether or not an item is capable of operation while submerged.Shaft Rotation Direction
clockwise
Details
The direction of rotation of a rotating shaft as viewed from the drive end.Distance From End To Keyway Center
0.812 inches nominal
Details
The distance from the end of the item to the center of the keyway.Thread Diameter
0.625 inches nominal
Details
The length of a straight line which passes through the center of the threaded portion,and terminates at the circumference.Ground Polarity Type
negative
Details
Indicates the type of ground polarity utilized.Maximum Output Current Rating In Amps
55.0
Details
The maximum amount of output current for which the item is rated,expressed in amperes.Rectifier Location
integral
Details
Indicates the location of the rectifier for the item.Grounding Method
external
Details
The means by which the item is grounded.Shaft Drive End Style
straight shaft end, threaded, w/keyway
Details
The style designation indicating the configuration that most nearly corresponds to the appearance of the shaft drive end.Distance Between Shaft Center And Bottom Mounting Hole Center
3.250 inches nominal
Details
None.Distance Between Shaft Center And Top Mounting Hole Center
3.250 inches nominal
Details
None.Angular Deviation Of First Hole From Top Center In Deg
0.0
Details
None.Angular Deviation Of Second Hole From First Hole In Deg
180.0
Details
None.Bottom Mounting Hole Diameter
0.505 inches nominal
Details
None.Thread Series
unf
Details
A designation indicating the diameter-pitch combination and the number of threads per measurement scale applied to a series of diameters.Thread Class
2a
Details
A numeric-alpha designator indicating the pitch-diameter tolerance and the external or internal location of the thread.Mounting Hole Thread Series Designator
unc
Details
A designation distinguishing one group of thread diameter-pitch combinations from another by the number of threads per measurement scale for the specific diameter of a threaded mounting hole.Mounting Hole Thread Diameter
0.312 inches nominal
Details
The length of a straight line which passes through the center of a threaded mounting hole,and terminates at the circumference.Mounting Hole Thread Quantity Per Inch
18
Details
The number of mounting hole threads per linear inch measured on a line parallel to the thread axis.Mounting Hole Thread Class
2b
Details
A numeric-alpha designator indicating the pitch diameter tolerance and an external or internal mounting hole thread.Thread Quantity Per Inch
18
Details
The number of threads on the item per linear inch measured on a line parallel to the thread axis.Voltage In Volts
12.0
Details
The total electrical voltage.Master-Cross Reference List
| Part | CAGE | DAC | HCC | RNCC | RNVC | MSDS | RNAAC |
|---|---|---|---|---|---|---|---|
| A12NW601 | 94990 | 3 | - | 5 | 9 | - | HD |
| 10-26 | 31211 | 3 | - | 3 | 2 | - | AX |
| A12NW601 | 73614 | 3 | - | 5 | 9 | - | AX |
Material and Special Handling
Hazardous material, precious metals, criticality, and electrostatic discharge indicators.
| HMIC | PMIC | ESD/EMI | Criticality |
|---|---|---|---|
| N | U | - | - |
Freight
Universal / National Freight and Handling Information
| UFC | HMC | LTL | LCL |
|---|---|---|---|
| 34760 | - | W | - |
| RVC | WCC | TCC | SHC |
|---|---|---|---|
| - | 593 | Z | 9 |
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Manufacturer
FAQs
Frequently asked questions for NSN 2920-00-008-9912
What is the NIIN of the NSN 2920-00-008-9912?
The National Item Identification Number (NIIN) of the NSN 2920-00-008-9912 is 00-008-9912
When the NSN 2920-00-008-9912 was assigned to the Federal Catalog?
It was assigned 52 years ago, on Sun, Jul 23, 1972
Does the NSN 2920-00-008-9912 contain any precious metals?
Type/content is unknown
Does the NSN 2920-00-008-9912 contain any hazardous material?
No data in HMIRS
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