5305-01-491-0478

Find complete technical information, availability, and procurement data for: 5305-01-491-0478
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-491-0478

Item Name Code

18257

Assigment Date

10/11/2001 (24 years ago)

An item consisting of a flat, cupped or embossed metallic disk with a centerhole to fit an electrical conduit of a specified size and which is specifically designed to reduce the knockout opening in a box, panel, or wireway for the convenience of terminating electrical conduit of smaller size than the knockout. Excludes:adapter, electrical conduit.

2a thread class, right-hand thread direction, 10.000 inches nominal fastener length, hexagon head style, 1.250 inches minimum thread length

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: 1.250 inches minimum
Fastener Length: 10.000 inches nominal
Head Style: hexagon
Head Height: 0.250 inches nominal
Width Between Flats: 0.750 inches nominal
End Item Identification: 5410-01-482-7565
Nominal Thread Diameter: 0.500 inches
Thread Quantity Per Inch: 13
Material: steel overall
Surface Treatment: cadmium or zinc or anodize overall
Thread Series Designator: unc

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
17-2-0427-1	Hexagon Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-01-491-0478?

The FSCG of the NSN 5305-01-491-0478 is 5305

Does the NSN 5305-01-491-0478 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-491-0478 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 5305-01-491-0478 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-491-0478 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 5305-01-491-0478 was assigned to the Federal Catalog?

It was assigned 24 years ago, on Thu, Oct 11, 2001