251790C91

View detailed technical data, stock status, and sourcing information for: 251790C91
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Federal Supply Group

Engine Accessories

Federal Supply Classification

2920 Nonaircraft Engine Electrical System Components

National Stock Number

2920-00-767-6867

Item Name Code

03577

Assigment Date

04/09/1972 (54 years ago)

A headless fastener not exceeding 12 inches (304.8 mm) in length, threaded externally on both ends on which the nominal diameter of one threaded section is greater than the other. The entire unthreaded portion must be of a single diameter equal to or smaller than the maximum major diameter of the larger threaded end. Includes radial grooves or thread reliefs. Excludes:items with tapered threads.

0.404 inches minimum and 0.414 inches maximum mounting hole diameter, triangular mounting flange shape style, 2.875 inches nominal mounting hole radius, peripheral outboard gear drive w/worm shaft, shaft, shift lever, collar and over-running clutch w/drive housing engaging mechanism style, 240.0 engaging mechanism opening angular deviation in deg

Product Characteristics

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

Mounting Hole Diameter: 0.404 inches minimum and 0.414 inches maximum
Mounting Hole Radius: 2.875 inches nominal
Mounting Flange Shape Style: triangular
Engaging Mechanism Style: peripheral outboard gear drive w/worm shaft, shaft, shift lever, collar and over-running clutch w/drive housing
Engaging Mechanism Opening Angular Deviation In Deg: 240.0
Lever Actuation Method: solenoid
Shaft Rotation Direction: clockwise
Armature Actuation Device Type: relay-solenoid
Engaging Mechanism To Armature Positional Relationship: straight
Mounting Flange Angular Deviation In Deg: 60.0
Voltage In Volts: 12.0
Terminal Type And Quantity: 3 threaded stud

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
2920-00-988-9650	No Name Available	10/01/1983

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
1113001	Electrical Engine Starter
1113217	Electrical Engine Starter
156708H1	Electrical Engine Starter
195794H1	Electrical Engine Starter
251790C91	Electrical Engine Starter
CS2920-0010	Electrical Engine Starter

FAQs

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

What is the FSCG of the NSN 2920-00-767-6867?

The FSCG of the NSN 2920-00-767-6867 is 2920

Does the NSN 2920-00-767-6867 have a Schedule B code assigned?

Yes, the Schedule B code is 8511400000

Does NSN 2920-00-767-6867 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 2920-00-767-6867 contain precious materials?

Precious metal content is unknown

Does NSN 2920-00-767-6867 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 2920-00-767-6867 was assigned to the Federal Catalog?

It was assigned 54 years ago, on Sun, Apr 9, 1972