B1821BH056C300N

View detailed technical data, stock status, and sourcing information for: B1821BH056C300N
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-255-7403

Item Name Code

18257

Assigment Date

05/25/1987 (39 years ago)

2.832 inches minimum and 3.000 inches maximum thread length, 3.000 inches nominal fastener length, hexagon head style, right-hand thread direction, 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: 2.832 inches minimum and 3.000 inches maximum
Fastener Length: 3.000 inches nominal
Head Style: hexagon
Head Height: 0.359 inches nominal
Width Between Flats: 0.812 inches nominal
Nominal Thread Diameter: 0.562 inches
Thread Quantity Per Inch: 12
Minimum Tensile Strength: 150000 pounds per square inch
Hardness Rating: 32.0 rockwell c minimum and 38.0 rockwell c maximum overall
Special Features: blue coated
Material: steel comp 8640 overall
Material Document And Classification: sae grade8 assn std single material response overall
Surface Treatment: zinc and dichromate 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
197-530	Hexagon Head Cap Screw
860-530	Hexagon Head Cap Screw
B1821BH056C300N	Hexagon Head Cap Screw
MS90728-144	Hexagon Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-01-255-7403?

The FSCG of the NSN 5305-01-255-7403 is 5305

Does the NSN 5305-01-255-7403 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-255-7403 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 5305-01-255-7403 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-255-7403 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 5305-01-255-7403 was assigned to the Federal Catalog?

It was assigned 39 years ago, on Mon, May 25, 1987