CH57

View detailed technical data, stock status, and sourcing information for: CH57
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Federal Supply Group

Engine Accessories

Federal Supply Classification

2990 Nonaircraft Miscellaneous Engine Accessories

National Stock Number

2990-00-903-8324

Item Name Code

10849

Assigment Date

06/17/1966 (60 years ago)

A capacitor, whose capacitance value cannot be adjusted or varied, having a ceramic dielectric. It may be a single unit, or consist of two or more fixed units which cannot be separated.

6.000 inches nominal overall diameter, unthreaded single inlet inlet connection type, multipass muffler design, jacketed design type, 26.625 inches nominal overall length

Product Characteristics

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

Overall Length: 26.625 inches nominal
Inlet Connection Type: unthreaded single inlet
Overall Diameter: 6.000 inches nominal
Design Type: jacketed
Muffler Design: multipass
Tube Quantity: 3
Body Shape: round
Operating Position: horizontal
Inlet Location: offset located on end of body single inlet
Inlet Projection Length: 4.312 inches nominal single inlet
Inlet Inside Diameter: 2.000 inches nominal single inlet
Outlet Connection Type: unthreaded 1st outlet
Outlet Location: offset located on end of body 1st outlet
Outlet Projection Length: 4.312 inches nominal 1st outlet
Outlet Outside Diameter: 1.812 inches nominal 1st outlet
Material: asbestos insulation
Material: steel location not otherwise specified

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
2990-00-217-5859	No Name Available	08/01/1978
2990-00-962-8641	No Name Available	07/17/1968
2990-00-998-7329	No Name Available	01/18/1972

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
1905	Exhaust Muffler
26P	Exhaust Muffler
3848588	Exhaust Muffler
3890340	Exhaust Muffler
3930268	Exhaust Muffler
3930268H	Exhaust Muffler
3930269	Exhaust Muffler
3981946	Exhaust Muffler
792	Exhaust Muffler
8060	Exhaust Muffler
848	Exhaust Muffler
ABH857	Exhaust Muffler
CH57	Exhaust Muffler

FAQs

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

What is the FSCG of the NSN 2990-00-903-8324?

The FSCG of the NSN 2990-00-903-8324 is 2990

Does the NSN 2990-00-903-8324 have a Schedule B code assigned?

Yes, the Schedule B code is 8708925000

Does NSN 2990-00-903-8324 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 2990-00-903-8324 contain precious materials?

Precious metal content is unknown

Does NSN 2990-00-903-8324 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 2990-00-903-8324 was assigned to the Federal Catalog?

It was assigned 60 years ago, on Fri, Jun 17, 1966