B1821BH025C056N

View detailed technical data, stock status, and sourcing information for: B1821BH025C056N
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-00-225-3844

Item Name Code

18257

Assigment Date

01/01/1963 (63 years ago)

0.406 inches minimum and 0.562 inches maximum thread length, right-hand thread direction, 0.531 inches minimum and 0.562 inches maximum fastener length, hexagon head style, 2a thread class

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: 0.406 inches minimum and 0.562 inches maximum
Fastener Length: 0.531 inches minimum and 0.562 inches maximum
Head Style: hexagon
Head Height: 0.150 inches minimum and 0.163 inches maximum
Width Between Flats: 0.428 inches minimum and 0.438 inches maximum
End Item Identification: mrap rg 33; a4 bradley fighting vehicle; a3 bradley fighting vehicle
Nominal Thread Diameter: 0.250 inches
Thread Quantity Per Inch: 20
Minimum Tensile Strength: 150000 pounds per square inch
Surface Finish: 63.0 microinches threads
Material: steel overall
Material Document And Classification: sae j429 grade 8 assn std single material response or 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

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
5305002253844	Hexagon Head Cap Screw
AES01C250562AW9A91	Hexagon Head Cap Screw
B1821BH025C056N	Hexagon Head Cap Screw
G1921BH025C056N	Hexagon Head Cap Screw
MS90728-4	Hexagon Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-00-225-3844?

The FSCG of the NSN 5305-00-225-3844 is 5305

Does the NSN 5305-00-225-3844 have a Schedule B code assigned?

Yes, the Schedule B code is 8710000090

Does NSN 5305-00-225-3844 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 5305-00-225-3844 contain precious materials?

Precious metal content is unknown

Does NSN 5305-00-225-3844 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 5305-00-225-3844 was assigned to the Federal Catalog?

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