HD3

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HD3
Federal Supply Group
Engine Accessories
National Stock Number
2990-00-471-8606
Item Name Code
10849
Assigment Date
01/13/1971 (55 years ago)

A gearshaft with a single complement of spur gear teeth. For items with more than one complement of teeth, see gearshaft (1), multiple gears.

unthreaded single inlet inlet connection type, 30.500 inches nominal overall length, dry design type, 2.000 inches nominal 1st outlet2.000 inches nominal outlet inside diameter, 6.000 inches nominal overall diameter

Product Characteristics

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

Overall Length
30.500 inches nominal
Inlet Connection Type
unthreaded single inlet
Overall Diameter
6.000 inches nominal
Outlet Inside Diameter
2.000 inches nominal 1st outlet2.000 inches nominal
Design Type
dry
Coolant Type
air
Muffler Design
multipass
Tube Quantity
3
Body Shape
round
Operating Position
horizontal
Inlet Location
offset fromcenter ofend of body single inlet
Inlet Projection Length
3.250 inches nominal single inlet3.250 inches nominal
Inlet Inside Diameter
2.000 inches nominal single inlet2.000 inches nominal
Outlet Connection Type
unthreaded 1st outlet
Outlet Location
offsetfrom center ofend of body 1st outlet
Outlet Projection Length
3.250 inches nominal 1st outlet3.250 inches nominal
Outlet Outside Diameter
2.125 inches nominal 1st outlet2.125 inches nominal
Material
steel location not otherwise specified
Surface Treatment
aluminum alloy

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
21169 Exhaust Muffler
3954016 Exhaust Muffler
86136-M Exhaust Muffler
HD3 Exhaust Muffler
T-86136 Exhaust Muffler

FAQs

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

What is the FSCG of the NSN 2990-00-471-8606?
The FSCG of the NSN 2990-00-471-8606 is 2990
Does the NSN 2990-00-471-8606 have a Schedule B code assigned?
Yes, the Schedule B code is 8708925000
Does NSN 2990-00-471-8606 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 2990-00-471-8606 contain precious materials?
Precious metal content is unknown
Does NSN 2990-00-471-8606 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 2990-00-471-8606 was assigned to the Federal Catalog?
It was assigned 55 years ago, on Wed, Jan 13, 1971

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