5251

View detailed technical data, stock status, and sourcing information for: 5251
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Federal Supply Group

Engine Accessories

Federal Supply Classification

2990 Nonaircraft Miscellaneous Engine Accessories

National Stock Number

2990-00-258-6486

Item Name Code

10849

Assigment Date

01/01/1961 (65 years ago)

9.750 inches nominal overall width, unthreaded single inlet inlet connection type, 34.000 inches nominal overall length, 4.000 inches nominal overall height, horizontal operating position

Product Characteristics

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

Overall Length: 34.000 inches nominal
Overall Height: 4.000 inches nominal
Overall Width: 9.750 inches nominal
Inlet Connection Type: unthreaded single inlet
Operating Position: horizontal
Inlet Location: front single inlet
Inlet Outside Diameter: 2.250 inches nominal single inlet2.250 inches nominal

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
21143	Exhaust Muffler
411	Exhaust Muffler
5251	Exhaust Muffler
B8A5230B	Exhaust Muffler
B8A5230C	Exhaust Muffler
B9A5230F	Exhaust Muffler
MU688	Exhaust Muffler

FAQs

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

What is the FSCG of the NSN 2990-00-258-6486?

The FSCG of the NSN 2990-00-258-6486 is 2990

Does the NSN 2990-00-258-6486 have a Schedule B code assigned?

Yes, the Schedule B code is 8708925000

Does NSN 2990-00-258-6486 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 2990-00-258-6486 contain precious materials?

Precious metal content is unknown

Does NSN 2990-00-258-6486 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 2990-00-258-6486 was assigned to the Federal Catalog?

It was assigned 65 years ago, on Sun, Jan 1, 1961