108-87-1

View detailed technical data, stock status, and sourcing information for: 108-87-1
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Federal Supply Group

Engine Accessories

Federal Supply Classification

2920 Nonaircraft Engine Electrical System Components

National Stock Number

2920-00-371-5071

Item Name Code

17311

Assigment Date

01/01/1963 (63 years ago)

+0.6324 to 0.6365 inches thread pitch diameters, 0.6684 inches minimum and 0.669 inches maximum second step diameter, right-hand thread direction, 0.458 inches minimum and 0.500 inches maximum thread length, voltage regulator and woodruff key furnished items

Product Characteristics

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

Thread Pitch Diameters: +0.6324 to 0.6365 inches
Thread Direction: right-hand
Thread Length: 0.458 inches minimum and 0.500 inches maximum
Furnished Items: voltage regulator and woodruff key
Second Step Diameter: 0.6684 inches minimum and 0.669 inches maximum
Keyway Width: 0.125 inches nominal
Unthreaded Portion Length: 0.750 inches nominal
Mounting Hole Thread Direction: right-hand
Mounting Style: bracket mtd w/three mtg holes, top hole threaded
Environmental Protection: corrosion resistant and fungus resistant
Keyway Length: 0.625 inches nominal
Submersibility: nonsubmersible
Shaft Rotation Direction: clockwise
Distance From End To Keyway Center: 0.864 inches minimum and 0.906 inches maximum
Thread Diameter: 0.669 inches nominal
Ground Polarity Type: negative or positive
Armature Minimum Speed In Rpm At Full Current Output: 2300
Maximum Output Current Rating In Amps: 8.0
Grounding Method: external
Shaft Drive End Style: straight shaft end, threaded, w/keyway
Distance Between Shaft Center And Bottom Mounting Hole Center: 3.062 inches nominal
Distance Between Shaft Center And Top Mounting Hole Center: 2.938 inches nominal
Angular Deviation Of First Hole From Top Center In Deg: 193.0
Angular Deviation Of Second Hole From First Hole In Deg: 125.0
Distance Between Inside Surfaces Of Hinge Bracket: 6.118 inches minimum and 6.136 inches maximum
Distance Between Outside Surfaces Of Hinge Bracket: 6.868 inches minimum and 6.886 inches maximum
Bottom Mounting Hole Diameter: 0.316 inches minimum and 0.324 inches maximum
Thread Series: uns
Thread Class: 2a
Mounting Hole Thread Series Designator: unc
Mounting Hole Thread Diameter: 0.312 inches nominal
Mounting Hole Thread Quantity Per Inch: 18
Mounting Hole Thread Class: 2b
Thread Quantity Per Inch: 20
Voltage In Volts: 12.0

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
108-87-1	Engine Accessory Generator
1100976	Engine Accessory Generator

FAQs

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

What is the FSCG of the NSN 2920-00-371-5071?

The FSCG of the NSN 2920-00-371-5071 is 2920

Does the NSN 2920-00-371-5071 have a Schedule B code assigned?

Yes, the Schedule B code is 8511500000

Does NSN 2920-00-371-5071 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 2920-00-371-5071 contain precious materials?

Precious metal content is unknown

Does NSN 2920-00-371-5071 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 2920-00-371-5071 was assigned to the Federal Catalog?

It was assigned 63 years ago, on Tue, Jan 1, 1963