B1821BH038C475N

View detailed technical data, stock status, and sourcing information for: B1821BH038C475N
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-00-781-3930

Item Name Code

18257

Assigment Date

01/01/1960 (66 years ago)

2a thread class, hexagon head style, 1.000 inches minimum and 1.188 inches maximum thread length, right-hand thread direction, 4.656 inches minimum and 4.750 inches maximum fastener 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: 1.000 inches minimum and 1.188 inches maximum
Fastener Length: 4.656 inches minimum and 4.750 inches maximum
Head Style: hexagon
Head Height: 0.226 inches minimum and 0.243 inches maximum
Width Between Flats: 0.551 inches minimum and 0.562 inches maximum
End Item Identification: mrap - cougar cat1 a2
Nominal Thread Diameter: 0.375 inches
Thread Quantity Per Inch: 16
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: cadmium and chromate overall
Surface Treatment Document And Classification: qq-p-416,ty2cl2 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
1550860	Hexagon Head Cap Screw
5305PL0777742	Hexagon Head Cap Screw
AES01C375D75AW9A91	Hexagon Head Cap Screw
B1821BH038C475N	Hexagon Head Cap Screw
MS90728-77	Hexagon Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-00-781-3930?

The FSCG of the NSN 5305-00-781-3930 is 5305

Does the NSN 5305-00-781-3930 have a Schedule B code assigned?

Yes, the Schedule B code is 8710000090

Does NSN 5305-00-781-3930 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 5305-00-781-3930 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-00-781-3930 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 5305-00-781-3930 was assigned to the Federal Catalog?

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