B1821BH038C175N

View detailed technical data, stock status, and sourcing information for: B1821BH038C175N
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-00-821-3869

Item Name Code

18257

Assigment Date

01/01/1962 (64 years ago)

1.688 inches minimum and 1.750 inches maximum fastener length, 1.000 inches minimum and 1.188 inches maximum thread length, right-hand thread direction, 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: 1.000 inches minimum and 1.188 inches maximum
Fastener Length: 1.688 inches minimum and 1.750 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-rg-33 and rg-33 auv; mrap - cougar; mrap buffalo mk2a2; mrap - m-atv with cs13 sne; armored multi-purpose vehicle (ampv); multiple launch rocket system (mlrs); a4 bradley fighting vehicle; a3 bradley fighting vehicle; high-mobility artillery rocket system (himars)
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: 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Below is a list of NSNs that have been officially superseded by this NSN: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
5305-00-008-2100	No Name Available	05/20/1973
5305-00-021-3741	No Name Available	01/01/1993
5305-00-021-5460	No Name Available	10/21/1998
5305-00-022-7531	No Name Available	08/18/2009
5306-01-035-4883	No Name Available	01/01/1989
5305-01-160-7558	No Name Available	04/01/1986
5305-01-235-6329	No Name Available	07/01/1996
5305-01-273-6253	No Name Available	08/01/1990

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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14055557	Hexagon Head Cap Screw
23036269-065	Hexagon Head Cap Screw
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3176210-A-092	Hexagon Head Cap Screw
454467	Hexagon Head Cap Screw
456720130101	Hexagon Head Cap Screw
462BO1	Hexagon Head Cap Screw
5305008213869	Hexagon Head Cap Screw
5305PL0656067	Hexagon Head Cap Screw
AES01C375A75AW9A91	Hexagon Head Cap Screw
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B18.24A-2006	Hexagon Head Cap Screw
B1821BH038C175N	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 5305-00-821-3869?

The FSCG of the NSN 5305-00-821-3869 is 5305

Does the NSN 5305-00-821-3869 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-00-821-3869 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 5305-00-821-3869 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-00-821-3869 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 5305-00-821-3869 was assigned to the Federal Catalog?

It was assigned 64 years ago, on Mon, Jan 1, 1962