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NSN 5310-01-266-3893, 5310012663893
WASHER,RECESSED

Federal Supply Classification
FSC 5310 - Nuts and Washers
National Item Identification Number
NIIN 012663893
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 5310-01-266-3893

National Stock Number (NSN) 5310-01-266-3893, or NIIN 012663893, (washer,recessed) was assigned October 24, 1987 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. 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 has not been procured by the US Government in over a year. 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: SPE4A622V164Y. The total value of the awarded contracts has been US$ 475.02.

This NSN is somewhat common among different platforms, belonging to 7 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 Apr 02, 2006, 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 5310012663893 does not contain precious metals.

This information was last updated on .


Technical Characteristics

BOTTOM RECESS ANGLE
(CRKG) 90.0 DEGREES NOMINAL
BOTTOM RECESS DIAMETER
(CSML) 0.573 INCHES NOMINAL
HARDNESS RATING
(CQFM) 29.0 ROCKWELL C MINIMUM AND 39.0 ROCKWELL C MAXIMUM
HOLE DIAMETER
(AAUB) 0.504 INCHES MINIMUM AND 0.515 INCHES MAXIMUM
OUTSIDE DIAMETER
(ABKV) 1.178 INCHES MINIMUM AND 1.198 INCHES MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATION
(MDCL) AMS 5525 ASSN STD 1ST MATERIAL RESPONSE OR AMS 5737 ASSN STD 2ND MATERIAL RESPONSE OVERALL
MATERIAL THICKNESS
(ABPX) 0.155 INCHES MINIMUM AND 0.165 INCHES MAXIMUM
STYLE DESIGNATOR
(STYL) RECESSED BOTH SIDES
SURFACE FINISH
(CSYM) 63.0 MICROINCHES BOTTOM
SURFACE FINISH
(CSYM) 63.0 MICROINCHES TOP
TOP RECESS ANGLE
(CRSD) 90.0 DEGREES NOMINAL
TOP RECESS DIAMETER
(CQJW) 0.573 INCHES NOMINAL

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