2990-00-012-2557

Find complete technical information, availability, and procurement data for: 2990-00-012-2557
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Federal Supply Group

Engine Accessories

Federal Supply Classification

2990 Nonaircraft Miscellaneous Engine Accessories

National Stock Number

2990-00-012-2557

Item Name Code

32807

Assigment Date

05/03/1968 (58 years ago)

An item with a threaded or unthreaded hole specifically designed for use with an exhaust pipe, exhaust pipe connector, companion flange or the like in an engine or heater exhaust system. The face of the flange is normally drilled for connecting bolts and/or studs.

1.375 inches nominal flange diameter, 0.750 inches nominal flange thickness, round flange shape, steel material

Product Characteristics

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

Flange Diameter: 1.375 inches nominal
Flange Thickness: 0.750 inches nominal
Flange Shape: round
Material: steel

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
2990-00-874-0502	No Name Available	02/01/1978

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
M-552	Exhaust Pipe Flange
MA-1	Exhaust Pipe Flange

FAQs

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

What is the FSCG of the NSN 2990-00-012-2557?

The FSCG of the NSN 2990-00-012-2557 is 2990

Does the NSN 2990-00-012-2557 have a Schedule B code assigned?

Yes, the Schedule B code is 8708925000

Does NSN 2990-00-012-2557 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 2990-00-012-2557 contain precious materials?

Precious metal content is unknown

Does NSN 2990-00-012-2557 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 2990-00-012-2557 was assigned to the Federal Catalog?

It was assigned 58 years ago, on Fri, May 3, 1968