National Stock Number
3940-01-557-9413
National Stock Number (NSN) 3940-01-557-9413, or NIIN 015579413, (hook block assembly) was assigned October 31, 2007 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. 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, 2 suppliers are deemed design controlled or valid supply parts.
This part number has not been procured by the US Government in over 5 years, with the most recent procurement date of Nov 30, 2015. There has been one contract issued for this part number, with one award given. The US Government has only awarded those contracts to one supplier. The last contract numbers awarded were: SPE7L016M0538. The total value of the awarded contracts has been US$ 1,764.00.
This NSN is unique to one weapons system.
There has been very little demand for this national stock number. The demand for this NSN originated from less than 5 countries. Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Apr 27, 2013, this NSN's acquisition method was noted as: Suitable for Competitive Acquisition. (Potential sources shall include dealers/distributors.) The annual buy value of this part falls below the screening threshold of $10,000 but it has been screened for known source(s). (NOTE: This code shall not be used when screening parts entering the inventory. It shall not be assigned in preference to or supersede any other AMSC.) Valid AMCs: 1, 2, 3, 4 and 5.
This NSN is assigned to Item Name Code (INC) 39857. [A MECHANICAL DEVICE WHICH MAY CONSIST OF A GROUP OF ITEMS SUCH AS SIDE PLATE(S); SPACER(S); BEARING(S) NUT(S); TRUNNION; SHAFT; PIN(S), AND THE LIKE. A HOOK AND SAFETY LATCH IS ALWAYS PROVIDED. THIS ASSEMBLY ATTACHES TO THE CABLE OF MOST HOISTING TYPE DEVICES TO PROVIDE LIFTING AND/OR PULLING CAPABILITIES.]. There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 3940015579413 does not contain precious metals.
This NSN is associated to Schedule B 8425190000: pulley tackle and hoists, other than skip hoists or hoists of a kind used for raising vehicles, not powered by electric motor. The Schedule B End Use is listed as materials handling equipment. NAICS classification category 333923: overhead traveling crane, hoist, and monorail system manufacturing.
This information was last updated on Jul 01, 2025.