2990-00-042-4501

Find complete technical information, availability, and procurement data for: 2990-00-042-4501
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Federal Supply Group

Engine Accessories

Federal Supply Classification

2990 Nonaircraft Miscellaneous Engine Accessories

National Stock Number

2990-00-042-4501

Item Name Code

10849

Assigment Date

05/15/1968 (58 years ago)

4.940 inches nominal overall length, right-hand single inlet inlet thread direction, 1.750 inches nominal overall diameter, dry design type, threaded single inlet inlet connection type

Product Characteristics

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

Overall Length: 4.940 inches nominal
Inlet Connection Type: threaded single inlet
Inlet Thread Direction: right-hand single inlet
Overall Diameter: 1.750 inches nominal
Design Type: dry
Coolant Type: air
Muffler Design: baffle
Baffle Quantity: 1
Tube Quantity: 1
Body Shape: round
Operating Position: horizontal
Inlet Location: centrally located in end section single inlet
Inlet Projection Length: 0.880 inches nominal single inlet0.880 inches nominal
Inlet Thread Size: 1/2-14 single inlet
Inlet Thread Location: external single inlet
Nonconnection Outlet Type And Quantity: 1 round hole
Nonconnection Outlet Location: centrally located in end section opposite inlet
Nonconnection Outlet Size: 0.625 in. dia
Material: steel location not otherwise specified

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
170-0136-50	Exhaust Muffler
170-136-500	Exhaust Muffler
170-159-500	Exhaust Muffler
170136500	Exhaust Muffler

FAQs

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

What is the FSCG of the NSN 2990-00-042-4501?

The FSCG of the NSN 2990-00-042-4501 is 2990

Does the NSN 2990-00-042-4501 have a Schedule B code assigned?

Yes, the Schedule B code is 8708925000

Does NSN 2990-00-042-4501 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 2990-00-042-4501 contain precious materials?

Precious metal content is unknown

Does NSN 2990-00-042-4501 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 2990-00-042-4501 was assigned to the Federal Catalog?

It was assigned 58 years ago, on Wed, May 15, 1968