GL 407 SHEET 3/5

View detailed technical data, stock status, and sourcing information for: GL 407 SHEET 3/5
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Federal Supply Group

Engine Accessories

Federal Supply Classification

2990 Nonaircraft Miscellaneous Engine Accessories

National Stock Number

2990-01-421-0578

Item Name Code

10849

Assigment Date

10/31/1995 (30 years ago)

An item of any peripheral shape usually having one flat or spherical surface and a centrally located hole. It is designed for applications involving moving (kinetic) loads. Except for items fabricated from bearing quality synthetic (plastic) or composed of multilayer material, one bearing surface must either have a specific surface finish designation of 32 microinch (0.8 micrometre) or less, arithmetical average (aa) (arithmetic mean deviation) or one of the following conditions: be lapped or ground; have visible or detectable means of lubrication; grooves, indentations; or self-lubrication. The thickness must not exceed 25 percent of the outside diameter of the shortest distance between peripheral flats (when thickness and/or outside diameter is designated as a tolerance dimension, the maximum dimension will be used to determine compliance). Excludes:straight, tubular (without flange) items having a bearing surface(s) parallel to the axis of the bore only. See also washer, flat and spacer, sleeve.

strategic sealift conversion ships class. end item identification

Product Characteristics

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

End Item Identification: strategic sealift conversion ships class.

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
GL 407 SHEET 3 ITEM 5	Exhaust Muffler
GL 407 SHEET 3/5	Exhaust Muffler
SS-800-A674	Exhaust Muffler
SS660-A674	Exhaust Muffler

FAQs

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

What is the FSCG of the NSN 2990-01-421-0578?

The FSCG of the NSN 2990-01-421-0578 is 2990

Does the NSN 2990-01-421-0578 have a Schedule B code assigned?

Yes, the Schedule B code is 8708925000

Does NSN 2990-01-421-0578 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 2990-01-421-0578 contain precious materials?

Item does not contain precious metal.

Does NSN 2990-01-421-0578 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 2990-01-421-0578 was assigned to the Federal Catalog?

It was assigned 30 years ago, on Tue, Oct 31, 1995