NSN 2990-01-133-7994, 2990011337994
COVER,LOWER,BY-PASS

Federal Supply Classification: FSC 2990 - Miscellaneous Engine Accessories, Nonaircraft
National Item Identification Number: NIIN 011337994
Codification Country: United States
Item Name Code: INC 77777
Criticality: (X) This item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.
Hazardous Material Indicator Code: (N) There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials.

Availability: Readily Available Qualified Suppliers: Currently qualifying suppliers

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DLMS^® Summary

National Stock Number 2990-01-133-7994

National Stock Number (NSN) 2990-01-133-7994, or NIIN 011337994, (cover,lower,by-pass) was assigned June 22, 1982 in the Federal Logistics Information System (FLIS). This NSN does not replace any other NSNs.

There is only one manufacturer part number associated with this NSN. One of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 2 suppliers. Today, one supplier is listed as an Active supplier for this NSN. Of the active suppliers, only one supplier is deemed design controlled or valid supply parts.

This part number has not been procured by the US Government in over 5 years.

This NSN is assigned to Item Name Code (INC) 77777. This item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application. There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 2990011337994 does not contain precious metals.

This information was last updated on May 01, 2024.

Technical Characteristics

GENERAL CHARACTERISTICS ITEM DESCRIPTION: (TEXT) CAST ALUMINUM; SIX MIG HOLES; 0.281 IN. DIA OF MTG HOLES; 3.433 IN. O/A HEIGHTH; THREE HOLES IN CENTER OF COVER COUNTERBORED 0.220 IN. DIA BY 0.030 IN. DEEP AND TAPPED 10-24 UNC-2B THD; 0.470 IN. DEPTH OF TAPPED THD; ONE HOLE TAPPED 1/4-20 UNC-2B THD BY 0.540 IN. DEEP; 1.750 IN. C TO C BETWEEN MTG HOLES AT TOP; 2.570 IN. C TO C BETWEEN MTG HOLES AT BOTTOM