4P0660

View detailed technical data, stock status, and sourcing information for: 4P0660
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Federal Supply Group

Engine Accessories

Federal Supply Classification

2990 Nonaircraft Miscellaneous Engine Accessories

National Stock Number

2990-00-410-6812

Item Name Code

10849

Assigment Date

01/22/1972 (54 years ago)

An item of any peripheral shape having flanges or groove(s) on its outer perimeter to provide a self-retaining characteristic when inserted in a hole, clamp, or the like. Designed for the purpose of protecting and/or insulating wires, cables and other items passing through it. Excludes:bushing, nonmetallic; bumper; and insulator bushing.

3.000 inches nominal 1st outlet3.000 inches nominal outlet inside diameter, dry design type, unthreaded single inlet inlet connection type, 8.000 inches nominal overall diameter, 21.000 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: 21.000 inches nominal
Inlet Connection Type: unthreaded single inlet
Overall Diameter: 8.000 inches nominal
Outlet Inside Diameter: 3.000 inches nominal 1st outlet3.000 inches nominal
Design Type: dry
Coolant Type: air
Muffler Design: straight through w/baffle
Baffle Quantity: 1
Tube Quantity: 1
Body Shape: round
Operating Position: vertical
Inlet Location: centrally located end section of body single inlet
Inlet Projection Length: 2.500 inches nominal single inlet2.500 inches nominal
Inlet Outside Diameter: 3.125 inches nominal single inlet3.125 inches nominal
Inlet Inside Diameter: 3.000 inches nominal single inlet3.000 inches nominal
Outlet Connection Type: unthreaded 1st outlet
Outlet Location: centrally located end section of body 1st outlet
Outlet Projection Length: 2.500 inches nominal 1st outlet2.500 inches nominal
Outlet Outside Diameter: 3.125 inches nominal 1st outlet3.125 inches nominal
Material: steel location not otherwise specified
Surface Treatment: cadmium

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
4P0660	Exhaust Muffler
7S8301	Exhaust Muffler
M08-0173	Exhaust Muffler
MFM08-0027	Exhaust Muffler
MFM08-0083	Exhaust Muffler

FAQs

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

What is the FSCG of the NSN 2990-00-410-6812?

The FSCG of the NSN 2990-00-410-6812 is 2990

Does the NSN 2990-00-410-6812 have a Schedule B code assigned?

Yes, the Schedule B code is 8708925000

Does NSN 2990-00-410-6812 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 2990-00-410-6812 contain precious materials?

Item does not contain precious metal.

Does NSN 2990-00-410-6812 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 2990-00-410-6812 was assigned to the Federal Catalog?

It was assigned 54 years ago, on Sat, Jan 22, 1972