5305-00-042-0477

Find complete technical information, availability, and procurement data for: 5305-00-042-0477
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-00-042-0477

Item Name Code

06660

Assigment Date

01/01/1963 (63 years ago)

A screw, (as modified) to which has been assembled one or more nonremovable washer(s).

0.438 inches nominal fastener length, 2a thread class, round head style, 0.438 inches maximum thread length, right-hand thread direction

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Thread Class: 2a
Thread Direction: right-hand
Thread Length: 0.438 inches maximum
Fastener Length: 0.438 inches nominal
Head Style: round
Head Diameter: 0.334 inches minimum and 0.359 inches maximum
Head Height: 0.123 inches minimum and 0.137 inches maximum
Washer Quantity: 1
Internal Drive Style: cross recess type 1
Nominal Thread Diameter: 0.190 inches
Thread Quantity Per Inch: 24
Hardness Rating: 40.0 rockwell c minimum and 50.0 rockwell c maximum primary washer
Primary Washer Outside Diameter: 0.372 inches minimum and 0.383 inches maximum
Primary Washer Style: flat internal teeth
Primary Washer Material Thickness: 0.022 inches nominal
Material: steel or steel comp 1010 or steel comp 1050 or steel comp 1566 overall
Material Document And Classification: sae assn std all material responses overall
Surface Treatment: cadmium or zinc overall
Surface Treatment Document And Classification: 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
Thread Series Designator: unc

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5305-00-042-0505	No Name Available	08/01/1979

Related Parts

This NSN group includes multiple components designed to meet specific performance and operational standards. Each listing provides detailed specs, functionality data, and replacement compatibility information:

Part Number	Name
420477	Assembled Washer Screw

FAQs

Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.

What is the FSCG of the NSN 5305-00-042-0477?

The FSCG of the NSN 5305-00-042-0477 is 5305

Does the NSN 5305-00-042-0477 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-00-042-0477 require demilitarization?

Items subject to the export administration regulations (ear) in parts 730-774 of title 15, code of federal regulations (cfr) (ccli or ear99) and determined by dod to present a low risk when released out of dod control. No demil, mut, or end use certificate is required. May require an export licensefrom doc.

Does NSN 5305-00-042-0477 contain precious materials?

Precious metal content is unknown

Does NSN 5305-00-042-0477 contain hazardous materials?

Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.

When the NSN 5305-00-042-0477 was assigned to the Federal Catalog?

It was assigned 63 years ago, on Tue, Jan 1, 1963