NSN 2520-00-039-8461, 2520000398461
DIFFERENTIAL ASSEMBLY

Federal Supply Classification: FSC 2520 - Vehicular Power Transmission Components
National Item Identification Number: NIIN 000398461
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: (P) There is no information in the HMIRS; however, the NSN is in an FSC in Table II of Federal Standard 313 and an MSDS may be required by the user. The requirement for an MSDS is dependent on a hazard determination of the supplier or the intended end use of the product.

Availability: Readily Available Qualified Suppliers: Currently qualifying suppliers

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DLMS^® Summary

National Stock Number 2520-00-039-8461

National Stock Number (NSN) 2520-00-039-8461, or NIIN 000398461, (differential assembly) 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 information in the HMIRS; however, the NSN is in an FSC in Table II of Federal Standard 313 and an MSDS may be required by the user. The requirement for an MSDS is dependent on a hazard determination of the supplier or the intended end use of the product. NSN 2520000398461 contains an unknown precious metal.

This NSN is associated to Schedule B 8483909500: parts, nesoi, of bearing housings & plain shaft bearings, housed bearings, clutches, universal joints, flywheels and transmission shafts. The Schedule B End Use is listed as industrial machines, other. NAICS classification category 333613: mechanical power transmission equipment manufacturing.

This information was last updated on Jul 01, 2025.

Technical Characteristics

GENERAL CHARACTERISTICS ITEM DESCRIPTION: (TEXT) ASSEMBLY CONSISTS OF 1 EA P/N 5100-46 TRUARC,RETAINING RING,1 EA P/N 226062 32 PITCH 24 TEETH GEAR,1 EA P/N 5100-25 TURARC RETAINING RING,4 EA 3/16 IN. DIA X 1 IN. LG DOWEL PIN,1 EA P/N 227244 BEARING RETAINER,4 EA P/NEA P/N 303636 48 PITCH 42 TEETH GEAR,1 EA P/N 226118 48 PITCH 80 TEETH GEAR,3 EA P/N S1S MRC BALL BEARING,1 EA P/N 303634 SHAFT,2 EA P/N 5100-31 TRUARC RETAINING RING,4 EA P/N 226738 WOODRUFF KEY,1 EA P/N 226064 32 PITCH 56 TEETH GEAR 1 EA P/N 227242 48 PITCH 42 TEETH GEAR,4 EA P/N 1205 SHAKEPROOF LOCK WASHER,4 EA P/N 226737 CAP SCREW,1 EA P/N 303635 PINION CARRIER,1 EA P/N XA134 MRC BALL BEARING