NSN 4620-00-390-3720, 4620003903720
HUB,GEAR

Federal Supply Classification: FSC 4620 - Water Distillation Equipment, Marine and Industrial
National Item Identification Number: NIIN 003903720
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 4620-00-390-3720

National Stock Number (NSN) 4620-00-390-3720, or NIIN 003903720, (hub,gear) was assigned January 1, 1963 in the Federal Logistics Information System (FLIS). This NSN does not replace any other NSNs.

There are 2 manufacturer part numbers associated with this NSN. None of the associated part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by one supplier. 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 4620003903720 contains an unknown precious metal.

This information was last updated on Aug 01, 2025.

Technical Characteristics

GENERAL CHARACTERISTICS ITEM DESCRIPTION: (TEXT) STEEL; 1.875 IN. LG O/A; 6.000 IN. OD OF FLANGE,0.625 IN. THK; 4 MTG HOLES 0.500-20 UNF,EQUALLY SPACED ON A 5.000 IN. BOLT CIRCLE DIA; HUBS ON BOTH SIDES OF FLANGE ARE IDENTICAL,2.937 IN. OD,0.625 IN. LG; 1.750 IN. DIA BORE; 1 KEYWAY THROUGH BORE,0.375 IN. W,0.187 IN. DP