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NSN 5310-00-840-6904, 5310008406904
WASHER,RECESSED

Federal Supply Classification
FSC 5310 - Nuts and Washers
National Item Identification Number
NIIN 008406904
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 5310-00-840-6904

National Stock Number (NSN) 5310-00-840-6904, or NIIN 008406904, (washer,recessed) was assigned January 1, 1962 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.

This part number has not been procured by the US Government in over 5 years.

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 Mar 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 5310008406904 does not contain precious metals.

This NSN is associated to Schedule B 7318220000: washers other than lock washers, iron or steel. The Schedule B End Use is listed as finished metal shapes. NAICS classification category 332722: bolt, nut, screw, rivet, and washer manufacturing.

This information was last updated on .


Technical Characteristics

MATERIAL
(MATT) STEEL COMP 4140 OVERALL OR STEEL COMP 5140 OVERALL OR STEEL COMP 8640 OVERALL OR STEEL COMP 8740 OVERALL
HARDNESS RATING
(CQFM) 301.0 BRINELL HULTGREN MINIMUM AND 336.0 BRINELL HULTGREN MAXIMUM
HEAT TREATMENT
(HEAT) QUENCHED AND TEMPERED
HOLE DIAMETER
(AAUB) 0.810 INCHES NOMINAL
OUTSIDE DIAMETER
(ABKV) 2.735 INCHES MINIMUM AND 2.745 INCHES MAXIMUM
OVERALL HEIGHT
(ABKW) 0.250 INCHES NOMINAL
MATERIAL
(MATT) STEEL COMP 4140 OR STEEL COMP 5140 OR STEEL COMP 8640 OR STEEL COMP 8740 OVERALL
RECESS DEPTH
(ABMH) 0.130 INCHES NOMINAL
RECESS DIAMETER
(ABMD) 1.380 INCHES NOMINAL
STYLE DESIGNATOR
(STYL) RECESSED

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