8658-N

View detailed technical data, stock status, and sourcing information for: 8658-N
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Federal Supply Group

Engine Accessories

Federal Supply Classification

2990 Nonaircraft Miscellaneous Engine Accessories

National Stock Number

2990-01-025-1517

Item Name Code

10849

Assigment Date

07/27/1976 (50 years ago)

A vehicular device designed to increase, decrease, and/or reverse the rotation between the drive and driven shaft or shafts. It may or may not include the shifting control mechanism which changes ratios and/or direction of rotation. Excludes:transmission, cross-drive and transmissions with controlled differentials.

dry design type, 12.000 inches nominal overall length, 6.125 inches nominal overall diameter, davey compressor model 15m250rpv end item identification, unthreaded 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: 12.000 inches nominal
Inlet Connection Type: unthreaded single inlet
Overall Diameter: 6.125 inches nominal
End Item Identification: davey compressor model 15m250rpv
Design Type: dry
Coolant Type: air
Tube Quantity: 2
Body Shape: round
Operating Position: universal
Inlet Location: on side of body 2.750 in. c of inlet to end of body single inlet
Inlet Projection Length: 2.000 inches nominal single inlet2.000 inches nominal
Inlet Inside Diameter: 3.505 inches minimum and 3.525 inches maximum single inlet
Outlet Connection Type: unthreaded 1st outlet
Outlet Location: on side of body 2.500 in. c of outlet to end of body 1st outlet
Outlet Projection Length: 3.250 inches nominal 1st outlet3.250 inches nominal
Outlet Outside Diameter: 2.975 inches minimum and 2.995 inches maximum 1st outlet
Special Features: w/clamp on the inlet tube
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
8658-N	Exhaust Muffler
ABT8658	Exhaust Muffler
T-8658	Exhaust Muffler

FAQs

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

What is the FSCG of the NSN 2990-01-025-1517?

The FSCG of the NSN 2990-01-025-1517 is 2990

Does the NSN 2990-01-025-1517 have a Schedule B code assigned?

Yes, the Schedule B code is 8708925000

Does NSN 2990-01-025-1517 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 2990-01-025-1517 contain precious materials?

Precious metal content is unknown

Does NSN 2990-01-025-1517 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 2990-01-025-1517 was assigned to the Federal Catalog?

It was assigned 50 years ago, on Tue, Jul 27, 1976