NSN 5305-00-042-0478, 5305000420478
SCREW,ASSEMBLED WASHER

Federal Supply Classification: FSC 5305 - Screws
National Item Identification Number: NIIN 000420478
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.

Availability: Readily Available Qualified Suppliers: Currently qualifying suppliers

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DLMS^® Summary

National Stock Number 5305-00-042-0478

National Stock Number (NSN) 5305-00-042-0478, or NIIN 000420478, (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 2 manufacturer part numbers associated with this NSN. One of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 3 suppliers. Today, 2 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, there are no suppliers that are 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 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 5305000420478 contains an unknown precious metal.

This information was last updated on Sep 01, 2024.

Technical Characteristics

FASTENER LENGTH: (AASB) 0.500 INCHES NOMINAL
HARDNESS RATING: (CQFM) 40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM PRIMARY WASHER
HEAD DIAMETER: (AASL) 0.334 INCHES MINIMUM AND 0.359 INCHES MAXIMUM
HEAD HEIGHT: (AASU) 0.123 INCHES MINIMUM AND 0.137 INCHES MAXIMUM
HEAD STYLE: (AASK) ROUND
INTERNAL DRIVE STYLE: (ABQZ) CROSS RECESS TYPE 1
MATERIAL DOCUMENT AND CLASSIFICATION: (MDCL) SAE ASSN STD ALL MATERIAL RESPONSES OVERALL
NOMINAL THREAD DIAMETER: (AHYM) 0.190 INCHES
PRIMARY WASHER STYLE: (CTHW) FLAT INTERNAL TEETH
PRIMARY WASHER MATERIAL THICKNESS: (CTJJ) 0.022 INCHES NOMINAL
PRIMARY WASHER OUTSIDE DIAMETER: (CSPG) 0.372 INCHES MINIMUM AND 0.383 INCHES MAXIMUM
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 CLASS: (AAJD) 2A
THREAD DIRECTION: (AAJF) RIGHT-HAND
THREAD LENGTH: (AASA) 0.500 INCHES MAXIMUM
THREAD QUANTITY PER INCH: (CMLP) 24
THREAD SERIES DESIGNATOR: (THSD) UNC
SURFACE TREATMENT: (SFTT) CADMIUM OVERALL OR ZINC OVERALL