NSN 5305-00-285-5274, 5305002855274
SCREW,ASSEMBLED WASHER

Federal Supply Classification: FSC 5305 - Screws
National Item Identification Number: NIIN 002855274
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 5305-00-285-5274

National Stock Number (NSN) 5305-00-285-5274, or NIIN 002855274, (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 5305002855274 contains an unknown precious metal.

This information was last updated on Jul 01, 2025.

Technical Characteristics

SURFACE TREATMENT: (SFTT) CADMIUM OVERALL OR ZINC OVERALL
FASTENER LENGTH: (AASB) 0.281 INCHES MINIMUM AND 0.312 INCHES MAXIMUM
HARDNESS RATING: (CQFM) 40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM PRIMARY WASHER
HEAD DIAMETER: (AASL) 0.208 INCHES MINIMUM AND 0.226 INCHES MAXIMUM
HEAD HEIGHT: (AASU) 0.086 INCHES MINIMUM AND 0.096 INCHES MAXIMUM
HEAD STYLE: (AASK) FILLISTER
INTERNAL DRIVE STYLE: (ABQZ) CROSS RECESS TYPE 1
NOMINAL THREAD DIAMETER: (AHYM) 0.138 INCHES
PRIMARY WASHER MATERIAL THICKNESS: (CTJJ) 0.031 INCHES MINIMUM
PRIMARY WASHER OUTSIDE DIAMETER: (CSPG) 0.218 INCHES MINIMUM AND 0.231 INCHES MAXIMUM
PRIMARY WASHER STYLE: (CTHW) SPLIT HELICAL RING
WASHER QUANTITY: (AAVW) 1
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
SURFACE TREATMENT: (SFTT) CADMIUM OR ZINC OVERALL
THREAD DIRECTION: (AAJF) RIGHT-HAND
THREAD CLASS: (AAJD) 2A
THREAD LENGTH: (AASA) 0.281 INCHES MAXIMUM
THREAD SERIES DESIGNATOR: (THSD) UNC
THREAD QUANTITY PER INCH: (CMLP) 32