2990-00-383-3843

Find complete technical information, availability, and procurement data for: 2990-00-383-3843
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Federal Supply Group

Engine Accessories

Federal Supply Classification

2990 Nonaircraft Miscellaneous Engine Accessories

National Stock Number

2990-00-383-3843

Item Name Code

77777

Assigment Date

01/01/1963 (63 years ago)

6.625 in.o/a lg,consists of shaft,counterweight and studs,head of shaft 3.182 in.min,3.192 in.max dia,0.188 in.lg,end of shaft thd,0.844 in.lg of end,0.656 in.lg thd portion,7/16-20 nf 2a rh thd,1st step tapered and thd,0.655 in.min,0.656 in.max dia,1.963 in.min,1.973 in.max lg of step,center portion of step thd 21/32-24 rh 2a thd,2nd step 2.656 in.lg,0.669 in.dia,3rd step 0.747 in.min,0.748 in.max dia,0.969 in.min,0.979 in.max lg,9 holes in head of shaft,3 holes 0.312 in.min,0.313 in.max dia,countersunk 0.0312 in.by 45 deg,holes located 95 deg between 1st and 2nd hole,123 deg between 2nd and 3rd hole on a 2.8125 in.bolt circle,4 holes 0.252 in.dia,countersunk 0.0313 in.by 45 deg,40 deg between 1st and 2nd hole,60 deg between 2nd and 3rd and 40 deg between 3rd and 4th hole,1 hole 0.875 in.min,0.876 in.max dia general characteristics item description

Product Characteristics

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

General Characteristics Item Description: 6.625 in.o/a lg,consists of shaft,counterweight and studs,head of shaft 3.182 in.min,3.192 in.max dia,0.188 in.lg,end of shaft thd,0.844 in.lg of end,0.656 in.lg thd portion,7/16-20 nf 2a rh thd,1st step tapered and thd,0.655 in.min,0.656 in.max dia,1.963 in.min,1.973 in.max lg of step,center portion of step thd 21/32-24 rh 2a thd,2nd step 2.656 in.lg,0.669 in.dia,3rd step 0.747 in.min,0.748 in.max dia,0.969 in.min,0.979 in.max lg,9 holes in head of shaft,3 holes 0.312 in.min,0.313 in.max dia,countersunk 0.0312 in.by 45 deg,holes located 95 deg between 1st and 2nd hole,123 deg between 2nd and 3rd hole on a 2.8125 in.bolt circle,4 holes 0.252 in.dia,countersunk 0.0313 in.by 45 deg,40 deg between 1st and 2nd hole,60 deg between 2nd and 3rd and 40 deg between 3rd and 4th hole,1 hole 0.875 in.min,0.876 in.max dia

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
2805-00-448-1073	No Name Available	01/01/1963

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
AA878	Shaft Assy.intake Valve

FAQs

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

What is the FSCG of the NSN 2990-00-383-3843?

The FSCG of the NSN 2990-00-383-3843 is 2990

Does NSN 2990-00-383-3843 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 2990-00-383-3843 contain precious materials?

Precious metal content is unknown

Does NSN 2990-00-383-3843 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 2990-00-383-3843 was assigned to the Federal Catalog?

It was assigned 63 years ago, on Tue, Jan 1, 1963