National Stock Number
1355-01-171-5403
National Stock Number (NSN) 1355-01-171-5403, or NIIN 011715403, (ring,clamping) was assigned February 9, 1984 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. 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.
Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Sep 27, 2020, this NSN's acquisition method was noted as: Acquire only from the prime contractor although the engineering data identifies the Commercial and Government Entity Code (CAGE) and part number of a source other than the prime contractor. The design of this part is unstable. Engineering, manufacturing, or performance characteristics indicate that the required design objectives have not been achieved. Major changes are contemplated because the part has a low process yield or has demonstrated marginal performance during tests or service use. These changes will render the present part obsolete and unusable in its present configuration. Limited acquisition from the present source is anticipated pending configuration changes. Valid AMCs: 1, 2, 3, 4 and 5.
This NSN is assigned to Item Name Code (INC) 42864. [A RING-SHAPED ITEM CONSISTING OF TWO CIRCULAR RING SEGMENTS AND FASTENERS SUCH AS SCREWS, THREADED SPINDLES AND THE LIKE. IT IS DESIGNED TO FORM A RIGID CONNECTION BETWEEN TWO LINEARLY JOINED TORPEDO SECTIONS, UNDERWATER MINE SECTIONS AND THE LIKE. THE ITEM IS PLACED AROUND THE INTERFACE OF THE SECTIONS AND TIGHTENED TO THE CONNECTION ELEMENTS SO THAT THE INSIDE PROFILE OF THE RING SEGMENTS SOLIDLY LINKS WITH THE OUTSIDE PROFILES AT THE ENDS OF THE SECTIONS.]. 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 1355011715403 does not contain precious metals.
This information was last updated on Jul 01, 2025.