B1821BH025C150N

View detailed technical data, stock status, and sourcing information for: B1821BH025C150N
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-00-071-2509

Item Name Code

18257

Assigment Date

01/01/1963 (63 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, right-hand thread direction, 0.750 inches minimum and 0.938 inches maximum thread length, hexagon head style, 1.500 inches nominal 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: 0.750 inches minimum and 0.938 inches maximum
Fastener Length: 1.500 inches nominal
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; mrap - m-atv with cs13 pop and sne; mrap - cougar tow; multiple launch rocket system (mlrs); 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
Hardness Rating: 32.0 rockwell c minimum and 38.0 rockwell c maximum overall
Minimum Yield Strength: 120000 pounds per square inch
Surface Finish: 63.0 microinches threads
Material: steel overall
Material Document And Classification: sae gr 8 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
Nondefinitive Spec/Std Data: 2 type and 10p style and 8 grade

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5305-00-008-2094	No Name Available	06/13/1973
5305-00-017-9801	No Name Available	07/01/1983
5305-00-022-7450	No Name Available	06/01/1976
5305-00-071-2239	No Name Available	06/01/1990
5306-00-141-2850	No Name Available	02/01/1982
5305-00-207-7059	No Name Available	12/09/1998
5305-00-209-2160	No Name Available	03/01/1983
5305-00-590-7894	No Name Available	06/01/1979
5305-00-637-4033	No Name Available	01/14/2004

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
0826V001	Hexagon Head Cap Screw
10082379	Hexagon Head Cap Screw
11KP861	Hexagon Head Cap Screw
179801	Hexagon Head Cap Screw
180034A6	Hexagon Head Cap Screw
5305000712239	Hexagon Head Cap Screw
5305000712509	Hexagon Head Cap Screw
5305PL0798789	Hexagon Head Cap Screw
6477-63	Hexagon Head Cap Screw
AES01C250A50AWA91	Hexagon Head Cap Screw
B1821BH025C150N	Hexagon Head Cap Screw
M29-00288 PC NO 234	Hexagon Head Cap Screw
MS90725-12	Hexagon Head Cap Screw
MS90728-12	Hexagon Head Cap Screw
PC179801	Hexagon Head Cap Screw
SK-11001-6	Hexagon Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-00-071-2509?

The FSCG of the NSN 5305-00-071-2509 is 5305

Does the NSN 5305-00-071-2509 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-00-071-2509 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 5305-00-071-2509 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-00-071-2509 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 5305-00-071-2509 was assigned to the Federal Catalog?

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