B1821BH063C250N

View detailed technical data, stock status, and sourcing information for: B1821BH063C250N
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-00-724-7224

Item Name Code

18257

Assigment Date

01/01/1960 (66 years ago)

An externally threaded fastener designed for insertion into holes in assembled parts, for mating with a preformed internal thread and for tightening or releasing by torquing the head. The threaded and unthreaded portions are both of the same nominal diameter of 0.190 inch (5 mm) or larger. Head dimensions and sizes of threaded and unthreaded portions shall conform to internationally recognized fastener standards. The thread length being the controlled dimension, the grip length is not specified. A locking feature may be incorporated in the design of the head or threads. The head is not designed to be held or driven with an inserted driver or by the thumb and fingers. Excludes:bolt,machine; bolt,externally relieved body; bolt,internal wrenching; and screw,cap,socket head.

2a thread class, 1.500 inches minimum and 1.727 inches maximum thread length, 2.406 inches minimum and 2.500 inches maximum fastener length, hexagon head style, 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: 1.500 inches minimum and 1.727 inches maximum
Fastener Length: 2.406 inches minimum and 2.500 inches maximum
Head Style: hexagon
Head Height: 0.378 inches minimum and 0.403 inches maximum
Width Between Flats: 0.922 inches minimum and 0.938 inches maximum
End Item Identification: mrap rg-33 and rg-33 auv; a4 bradley fighting vehicle; a3 bradley fighting vehicle; logistics support vessel
Nominal Thread Diameter: 0.625 inches
Thread Quantity Per Inch: 11
Minimum Tensile Strength: 150000 pounds per square inch
Hardness Rating: 32.0 rockwell c minimum and 38.0 rockwell c maximum overall
Surface Finish: 63.0 microinches threads
Material: steel overall
Material Document And Classification: astm a354 grade bd assn std single material response overall
Surface Treatment: zinc and chromate overall
Surface Treatment Document And Classification: astm b633 ty 2 sc 3 assn std single 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
5305-00-022-3438	No Name Available	04/24/1992
5305-00-057-1071	No Name Available	06/01/1980
5305-00-297-0783	No Name Available	07/23/2019
5305-00-637-4606	No Name Available	03/01/1998
5305-01-121-0354	No Name Available	07/01/1992
5305-01-228-9489	No Name Available	01/01/1989

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:

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803-5959183 PC 100	Hexagon Head Cap Screw
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FAQs

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

What is the FSCG of the NSN 5305-00-724-7224?

The FSCG of the NSN 5305-00-724-7224 is 5305

Does the NSN 5305-00-724-7224 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-00-724-7224 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 5305-00-724-7224 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-00-724-7224 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 5305-00-724-7224 was assigned to the Federal Catalog?

It was assigned 66 years ago, on Fri, Jan 1, 1960