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NSN 5310-01-176-7021, 5310011767021
WASHER,RECESSED

Federal Supply Classification
FSC 5310 - Nuts and Washers
National Item Identification Number
NIIN 011767021
Codification Country
United States
Item Name Code
INC 15933
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.
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DLMS® Summary

National Stock Number 5310-01-176-7021

National Stock Number (NSN) 5310-01-176-7021, or NIIN 011767021, (washer,recessed) was assigned April 16, 1984 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. One of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 3 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. ISO Group has several sources of supply for this NSN.

This part number has not been procured by the US Government in over a year. There have been 20 contracts issued for this part number, with 30 awards given. There is minimal competition for this NSN. The US Government has awarded contracts to 4 different suppliers. The last contract numbers awarded were: SPE4A621F7651, SPE4A620F177D, SPE5EY20F3520, SPE5EY20F0201, SPE5EY19F298P. The total value of the awarded contracts has been US$ 94,828.80.

This NSN is somewhat common among different platforms, belonging to 3 different weapons systems.

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 Dec 13, 2013, 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) 15933. [A WASHER OF ANY PERIPHERAL SHAPE HAVING A CENTRALLY LOCATED HOLE. BOTH BEARING SURFACES ARE PARALLEL AND FLAT, BUT ONE OR BOTH OF THE BEARING SURFACES MUST BE BROKEN BY A COUNTERBORE, COUNTERSINK, OR SIMILARLY SHAPED RECESS. THE THICKNESS MUST NOT EXCEED 25 PER CENT OF THE OUTSIDE DIAMETER OR THE LARGEST OUTSIDE DIMENSION. THE MAXIMUM LIMIT OF THE TOLERANCE OR RANGE APPLIED TO THE THICKNESS AND/OR LARGEST OUTSIDE DIMENSION MUST BE USED TO DETERMINE COMPLIANCE. EXCLUDES:WASHER, CONCAVE, RETAINER, PACKING, AND THRUST TYPE WASHERS. SEE ALSO SPACER, SLEEVE; AND SPACER, STEPPED.]. 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 5310011767021 does not contain precious metals.

This NSN is associated to Schedule B 8105900000: cobalt, wrought, and articles thereof. The Schedule B End Use is listed as finished metal shapes. NAICS classification category 331491: nonferrous metal (except copper and aluminum) rolling, drawing, and extruding.

This information was last updated on .


Technical Characteristics

STYLE DESIGNATOR
(STYL) RECESS
STYLE DESIGNATOR
(STYL) 15 RECESSED
HOLE DIAMETER
(AAUB) 0.627 INCHES MINIMUM AND 0.631 INCHES MAXIMUM
OUTSIDE DIAMETER
(ABKV) 1.052 INCHES MINIMUM AND 1.072 INCHES MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATION
(MDCL) AMS 5758 ASSN STD SINGLE MATERIAL RESPONSE OVERALL OR AMS 5844 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIAL THICKNESS
(ABPX) 0.071 INCHES MINIMUM AND 0.085 INCHES MAXIMUM
MATERIAL
(MATT) COBALT ALLOY OVERALL
RECESS DIAMETER
(ABMD) 0.778 INCHES MINIMUM AND 0.788 INCHES MAXIMUM
RECESS ANGLE
(CSTM) 90.0 DEGREES NOMINAL
SPECIAL FEATURES
(FEAT) HEAT TREATMENT, 260,000 PSI MIN
STYLE DESIGNATOR
(STYL) RECESSED

Manufacturer Part Numbers


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