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NSN 5310-00-431-7304, 5310004317304
WASHER,KEY

Federal Supply Classification
FSC 5310 - Nuts and Washers
National Item Identification Number
NIIN 004317304
Codification Country
United States
Item Name Code
INC 01869
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 5310-00-431-7304

National Stock Number (NSN) 5310-00-431-7304, or NIIN 004317304, (washer,key) was assigned April 26, 1971 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. 2 of those 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, 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.

This NSN is unique to one weapons system.

Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Jan 02, 2020, this NSN's acquisition method was noted as: Acquire directly from the actual manufacturer, whether or not the prime contractor is the actual manufacturer. The data needed to produce this item from additional sources is not physically available. Valid AMCs: 3, 4 and 5.

This NSN is assigned to Item Name Code (INC) 01869. [A WASHER OF NONRESILIENT MATERIAL USUALLY HAVING TWO PARALLEL BEARING SURFACES. THE OUTSIDE AND/OR INSIDE EDGES HAVE ONE OR MORE PROTUBERANCES. THE ENDS AND/OR EDGES MAY BE PREBENT AT ANY ANGLE OR THE PROTUBERANCES MAY BE PREBENT AT ANY ANGLE TO THE BEARING SURFACES. THE KEYS OR LUGS MAY BE FITTED INTO KEYWAYS IN ADJACENT MATERIAL OR THEY MAY BE BENT OVER AFTER APPLICATION TO HOLD OR LOCK ONE OR MORE ITEMS IN PLACE. EXCLUDES:THRUST TYPE WASHER.]. 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 5310004317304 contains an unknown precious metal.

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

III MATERIAL
(MATT) STEEL COMP 1020 OVERALL
EXTERNAL STRAIGHT KEY WIDTH
(ABLC) 1.250 INCHES NOMINAL
EXTERNAL KEY QUANTITY
(ABMQ) 8
HOLE DIAMETER
(AAUB) 2.260 INCHES NOMINAL
MATERIAL DOCUMENT AND CLASSIFICATION
(MDCL) 66 FED STD SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER
(ABKV) 3.750 INCHES NOMINAL
OVERALL DISTANCE INCLUDING KEYS
(ABLX) 4.750 INCHES NOMINAL
MATERIAL THICKNESS
(ABPX) 0.125 INCHES NOMINAL
MATERIAL
(MATT) STEEL COMP 1020 OVERALL
SPECIAL FEATURES
(FEAT) ID HAS ONE FLAT SIDE
STYLE DESIGNATOR
(STYL) KEY
WIDTH BETWEEN FLATS
(AATB) 2.010 INCHES NOMINAL

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