NSN 4820-01-125-9821, 4820011259821
HANDWHEEL LOCKNUT,VALVE

Federal Supply Classification: FSC 4820 - Valves, Nonpowered
National Item Identification Number: NIIN 011259821
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: We have 2 qualified suppliers

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DLMS^® Summary

National Stock Number 4820-01-125-9821

National Stock Number (NSN) 4820-01-125-9821, or NIIN 011259821, (handwheel locknut,valve) was assigned February 3, 1982 in the Federal Logistics Information System (FLIS). This NSN does not replace any other NSNs.

There are no manufacturer part numbers associated to this NSN. ISO Group has several sources of supply for this NSN.

This part number is actively being procured by the US Government, with procurement history within the last 90 days. There have been 9 contracts issued for this part number, with 9 awards given. There is moderate competition for this NSN. The US Government has awarded contracts to 6 different suppliers. The last contract numbers awarded were: SPE7M325V3304, SPE7MC25V1296, SPE5EK22V0045, SPE7M115VG809, SPE7M115VG809. The total value of the awarded contracts has been US$ 13,114.65.

This NSN is somewhat common among different platforms, belonging to 7 different weapons systems.

There has been a small amount of demand for this national stock number. The demand for this NSN originated from less than 5 countries. The 24 month forecast from the US Government for this part number has high volatility, with an estimated forecasted value of US$ 1,559. Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Aug 02, 2004, this NSN's acquisition method was noted as: Suitable for Competitive Acquisition. (Potential sources shall include dealers/distributors.) The Government has unlimited rights to the technical data, and the data package is complete. Valid AMCs: 1 and 2.

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 4820011259821 does not contain precious metals.

This NSN is associated to Schedule B 7318160000: nuts of iron or steel. The Schedule B End Use is listed as finished metal shapes. NAICS classification category 332722: bolt, nut, screw, rivet, and washer manufacturing.

This information was last updated on Jul 01, 2025.

Technical Characteristics

GENERAL CHARACTERISTICS ITEM DESCRIPTION: (TEXT) STEEL,CARBON COLD DRAWN ASTM A-108,GRADE 1113; 4.000 IN. SQUARE; 0.688 IN. THK; BOTTOM 2.625-12UN-2B THREADS 0.375 IN. DEEP; CENTER 0.250 I. DIA DRILL; ONE HOLE 0.257 IN. DIA DRILL ON 2.156 IN DBC
GENERAL CHARACTERISTICS ITEM DESCRIPTION: (TEXT) DSTEEL,CARBON COLD DRAWN ASTM A-108,GRADE 1113; 4.000 IN. SQUARE; 0.688 IN. THK; BOTTOM 2.625-12UN-2B THREADS 0.375 IN. DEEP; CENTER 0.250 I. DIA DRILL; ONE HOLE 0.257 IN. DIA DRILL ON 2.156 IN DBC