NCA1649

View detailed technical data, stock status, and sourcing information for: NCA1649
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Federal Supply Group

Vehicular Equipment Components

Federal Supply Classification

2520 Vehicular Power Transmission Components

National Stock Number

2520-00-238-5336

Item Name Code

36854

Assigment Date

11/02/1970 (55 years ago)

An item having one fixed gear and one free gear, both having the same complement of spur gear teeth, mounted on a common hub. The free gear is attached to the fixed gear by springs and operates as one gear. Upon installation with the mating gear, the teeth of the free moving gear are preset to mesh with teeth other than those of the fixed gear. This spring tension between the fixed gear and the free gear eliminates any free motion between the driver and the driven gear. The gear is used where identical and accurate transmitted motion between gears is required.

2.500 inches nominal overall length, 13.375 inches nominal overall diameter, matl steel;11 in. nom clutch size;c/o clutch 1,clutch cover 1,pressure plate 1,helical compression springs 6,pressure release levers 3;6 plain mtg holes 0.406 in. dia on 12.500 in. bolt circle special features

Product Characteristics

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

Overall Length: 2.500 inches nominal
Overall Diameter: 13.375 inches nominal
Special Features: matl steel;11 in. nom clutch size;c/o clutch 1,clutch cover 1,pressure plate 1,helical compression springs 6,pressure release levers 3;6 plain mtg holes 0.406 in. dia on 12.500 in. bolt circle

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
2409682	Friction Clutch Assembly
351649	Friction Clutch Assembly
361649	Friction Clutch Assembly
NCA1649	Friction Clutch Assembly

FAQs

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

What is the FSCG of the NSN 2520-00-238-5336?

The FSCG of the NSN 2520-00-238-5336 is 2520

Does the NSN 2520-00-238-5336 have a Schedule B code assigned?

Yes, the Schedule B code is 8483909500

Does NSN 2520-00-238-5336 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 2520-00-238-5336 contain precious materials?

Precious metal content is unknown

Does NSN 2520-00-238-5336 contain hazardous materials?

Indicates there is no information in the hmirs. The nsn is in a fsc in table ii of fed std 313 and a msds may be required by the user. The requirement for a msds is dependent on a hazard determination of the supplier or the intended end use of item.

When the NSN 2520-00-238-5336 was assigned to the Federal Catalog?

It was assigned 55 years ago, on Mon, Nov 2, 1970