NSN 4220-01-553-4343, 4220015534343
NECK DAM

Federal Supply Classification: FSC 4220 - Marine Lifesaving and Diving Equipment
National Item Identification Number: NIIN 015534343
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 4220-01-553-4343

National Stock Number (NSN) 4220-01-553-4343, or NIIN 015534343, (neck dam) was assigned July 16, 2007 in the Federal Logistics Information System (FLIS). NIIN 015534343 was cancelled on August 29, 2018, with a cancelled status of "Item is Cancelled - Inactive." There is no known replacement specified for this stock number. 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 2 suppliers. Today, 2 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, there are no suppliers that are 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 4220015534343 does not contain precious metals.

This information was last updated on Jul 01, 2025.

Technical Characteristics

MATERIAL: (MATT) PLASTIC NYLON
SPECIAL FEATURES: (FEAT) SIZE:SMALL; NECK SIZE:10-13 IN.; THE ITEM NAMED BY THE MANUFACTURER IS A COLD WATER NECK DAM; PARTS INCLUDED:510-450, O-RING MAIL SEAL(1); 540-405, SPLIT RINGS(2); 510-450, NECK DAM(1); 560-078, STEPPED RING(1); 530-808, PULL STRAP(1); 540-115, STRAP PLATE(1); 530-220, PULL STRAP MOUNT SCREWS(2); 530-025, NECK DAM MOUNT SCREWS(24); 530-022, CHIN STRAP MOUNT SCREWS(6); 545-100, CHIN STRAP ASSEMBLY COMPLETE(1); 505-100, NECK DAM/RING ASSEMBLY(1)