NSN 5305-00-285-5293, 5305002855293
SCREW,ASSEMBLED WASHER

Federal Supply Classification: FSC 5305 - Screws
National Item Identification Number: NIIN 002855293
Codification Country: United States
Item Name Code: INC 06660
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 5305-00-285-5293

National Stock Number (NSN) 5305-00-285-5293, or NIIN 002855293, (screw,assembled washer) was assigned January 1, 1963 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.

This NSN is assigned to Item Name Code (INC) 06660. [A SCREW, (AS MODIFIED) TO WHICH HAS BEEN ASSEMBLED ONE OR MORE NONREMOVABLE WASHER(S).]. 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 5305002855293 contains an unknown precious metal.

This NSN is associated to Schedule B 7318152000: bolts and bolts and their nuts or washers exported in the same shipment. The Schedule B End Use is listed as iron and steel products, other. NAICS classification category 332722: bolt, nut, screw, rivet, and washer manufacturing.

This information was last updated on Aug 01, 2025.

Technical Characteristics

FASTENER LENGTH: (AASB) 0.875 INCHES NOMINAL
HEAD DIAMETER: (AASL) 0.357 INCHES MINIMUM AND 0.373 INCHES MAXIMUM
HEAD HEIGHT: (AASU) 0.122 INCHES MINIMUM AND 0.133 INCHES MAXIMUM
HEAD STYLE: (AASK) PAN
INTERNAL DRIVE STYLE: (ABQZ) CROSS RECESS TYPE 1
NOMINAL THREAD DIAMETER: (AHYM) 0.190 INCHES
PRIMARY WASHER MATERIAL THICKNESS: (CTJJ) 0.022 INCHES NOMINAL
PRIMARY WASHER OUTSIDE DIAMETER: (CSPG) 0.372 INCHES MINIMUM AND 0.383 INCHES MAXIMUM
PRIMARY WASHER STYLE: (CTHW) FLAT INTERNAL TEETH
THREAD CLASS: (AAJD) 2A
THREAD DIRECTION: (AAJF) RIGHT-HAND
THREAD LENGTH: (AASA) 0.853 INCHES MAXIMUM
THREAD QUANTITY PER INCH: (CMLP) 32
THREAD SERIES DESIGNATOR: (THSD) UNF
WASHER QUANTITY: (AAVW) 1
HARDNESS RATING: (CQFM) 40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM PRIMARY WASHER
MATERIAL: (MATT) STEEL COMP 1010 OR STEEL COMP 1011 OR STEEL COMP 1013 OR STEEL COMP 1015 OR STEEL COMP 1016 OR STEEL COMP 1017 OR STEEL COMP 1018 OR STEEL COMP 1019 OR STEEL COMP 1020 FASTENER
SURFACE TREATMENT: (SFTT) CADMIUM OR ZINC OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: (STDC) QQ-P-416,TY 1,CL 3 FED SPEC 1ST TREATMENT RESPONSE OR QQ-Z-325,TY 1,CL 3 FED SPEC 2ND TREATMENT RESPONSE OVERALL
MATERIAL: (MATT) STEEL COMP 1010 FASTENER OR STEEL COMP 1011 FASTENER OR STEEL COMP 1013 FASTENER OR STEEL COMP 1015 FASTENER OR STEEL COMP 1016 FASTENER OR STEEL COMP 1017 FASTENER OR STEEL COMP 1018 FASTENER OR STEEL COMP 1019 FASTENER OR STEEL COMP 1020 FASTENER
SURFACE TREATMENT: (SFTT) CADMIUM OVERALL OR ZINC OVERALL