NSN 5305-00-974-3916, 5305009743916
SCREW,ASSEMBLED WASHER

Federal Supply Classification: FSC 5305 - Screws
National Item Identification Number: NIIN 009743916
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 5305-00-974-3916

National Stock Number (NSN) 5305-00-974-3916, or NIIN 009743916, (screw,assembled washer) 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 is only one manufacturer part number associated with this NSN. None of the associated part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by one supplier. Today, one supplier is listed as an Active supplier 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 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 5305009743916 does not contain precious metals.

This information was last updated on Jul 01, 2026.

Technical Characteristics

FASTENER LENGTH: (AASB) 0.500 INCHES NOMINAL
HEAD DIAMETER: (AASL) 0.256 INCHES MINIMUM AND 0.270 INCHES MAXIMUM
HEAD HEIGHT: (AASU) 0.072 INCHES MINIMUM AND 0.082 INCHES MAXIMUM
HEAD STYLE: (AASK) PAN NO. 2
INTERNAL DRIVE STYLE: (ABQZ) SLOT
MATERIAL: (MATT) STEEL OVERALL
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
THREAD DIRECTION: (AAJF) RIGHT-HAND
THREAD LENGTH: (AASA) 0.438 INCHES NOMINAL
THREAD QUANTITY PER INCH: (CMLP) 32
THREAD SERIES DESIGNATOR: (THSD) UNIFIED NATIONAL COARSE (UNC)
WASHER QUANTITY: (AAVW) 1
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: (STDC) QQ-P-416 TY 2 CL 3 FED SPEC ALL TREATMENT RESPONSES OVERALL
SURFACE TREATMENT: (SFTT) CADMIUM AND CHROMATE OVERALL
THREAD CLASS: (AAJD) 2A
SURFACE TREATMENT: (SFTT) CADMIUM OVERALL AND CHROMATE OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: (STDC) UNABLE TO DECODE
MATERIAL: (MATT) UNABLE TO DECODE
THREAD SERIES DESIGNATOR: (THSD) UNC