NSN 5306-00-042-5400, 5306000425400
BOLT,ASSEMBLED WASHER

Federal Supply Classification: FSC 5306 - Bolts
National Item Identification Number: NIIN 000425400
Codification Country: United States
Item Name Code: INC 06659
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 5306-00-042-5400

National Stock Number (NSN) 5306-00-042-5400, or NIIN 000425400, (bolt,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 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 3 suppliers. Today, 3 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) 06659. [A BOLT, MACHINE ON WHICH HAS BEEN ASSEMBLED ONE OR MORE NONREMOVABLE WASHERS. SEE ALSO SCREW, ASSEMBLED 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 5306000425400 contains an unknown precious metal.

This information was last updated on Jul 01, 2026.

Technical Characteristics

MATERIAL: (MATT) STEEL COMP 1010 OVERALL OR STEEL COMP 1020 OVERALL
SURFACE TREATMENT: (SFTT) CADMIUM OVERALL OR ZINC OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION: (MDCL) UNABLE TO DECODE
FASTENER LENGTH: (AASB) 1.188 INCHES MINIMUM AND 1.250 INCHES MAXIMUM
HEAD HEIGHT: (AASU) 0.270 INCHES MINIMUM AND 0.295 INCHES MAXIMUM
HEAD STYLE: (AASK) HEXAGON
MATERIAL DOCUMENT AND CLASSIFICATION: (MDCL) SAE ASSN STD ALL MATERIAL RESPONSES OVERALL
MATERIAL: (MATT) STEEL COMP 1010 OR STEEL COMP 1020 OVERALL
NOMINAL THREAD DIAMETER: (AHYM) 0.375 INCHES
PRIMARY WASHER MATERIAL THICKNESS: (CTJJ) 0.035 INCHES NOMINAL
PRIMARY WASHER OUTSIDE DIAMETER: (CSPG) 0.678 INCHES MINIMUM AND 0.692 INCHES MAXIMUM
PRIMARY WASHER STYLE: (CTHW) FLAT INTERNAL TEETH
SPECIAL FEATURES: (FEAT) W/HEADER POINT
THREAD DIRECTION: (AAJF) RIGHT-HAND
THREAD LENGTH: (AASA) 1.063 INCHES MINIMUM AND 1.188 INCHES MAXIMUM
THREAD QUANTITY PER INCH: (CMLP) 16
THREAD SERIES DESIGNATOR: (THSD) UNIFIED NATIONAL COARSE (UNC)
WASHER QUANTITY: (AAVW) 1
WIDTH BETWEEN FLATS: (AATB) 0.551 INCHES MINIMUM AND 0.562 INCHES MAXIMUM
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: (STDC) QQ-P-416,TY 1,CL 3 FED SPEC 1ST TREATMENT RESPONSE OR QQ-Z-325,TY 3,CL 3 FED SPEC 2ND TREATMENT RESPONSE OVERALL
SURFACE TREATMENT: (SFTT) CADMIUM OR ZINC OVERALL
THREAD CLASS: (AAJD) 2A
THREAD SERIES DESIGNATOR: (THSD) UNC