5305-01-421-4307

Find complete technical information, availability, and procurement data for: 5305-01-421-4307
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-421-4307

Item Name Code

18257

Assigment Date

11/08/1995 (30 years ago)

An item designed to be affixed to a base, forming a housing for a removable bearing or the bearing may be an integral part of the housing. It is used to prevent the admission of dirt and/or foreign matter, retain the lubricant and to position a shaft or the like.

1.000 inches nominal thread length, right-hand thread direction, 2a thread class, 1.000 inches nominal fastener length, hexagon head style

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: 1.000 inches nominal
Fastener Length: 1.000 inches nominal
Head Style: hexagon
Head Height: 0.378 inches minimum and 0.444 inches maximum
Width Between Flats: 0.906 inches minimum and 0.928 inches maximum
Nominal Thread Diameter: 0.625 inches
Thread Quantity Per Inch: 11
Material: steel overall
Material Document And Classification: astma354, grbd assn std single material response overall
Surface Treatment: cadmium and chromate overall
Surface Treatment Document And Classification: qq-p-416,ty 2,cl 3 fed spec single treatment response 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
B1821AH063C100N	Hexagon Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-01-421-4307?

The FSCG of the NSN 5305-01-421-4307 is 5305

Does the NSN 5305-01-421-4307 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-421-4307 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 5305-01-421-4307 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-421-4307 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 5305-01-421-4307 was assigned to the Federal Catalog?

It was assigned 30 years ago, on Wed, Nov 8, 1995