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B1821BH025C150N

B1821BH025C150N

Hexagon Head Cap Screw

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.

32.0 rockwell c minimum and 38.0 rockwell c maximum overall hardness rating, hexagon head style, 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 end item identification, 1.500 inches nominal fastener length, 0.150 inches minimum and 0.163 inches maximum head height

NSN: 5305-00-071-2509
Federal Supply Group: Hardware and Abrasives
Federal Supply Classification: 5305 -Screws
Item Identification Number: 00-071-2509
Requires Demilitarization?: Yes
INC: 18257
Assigment Date: Tue, Jan 1, 1963
Schedule B Code: 7318152000
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
Fastener Length: 1.500 inches nominal
Hardness Rating: 32.0 rockwell c minimum and 38.0 rockwell c maximum overall
Head Height: 0.150 inches minimum and 0.163 inches maximum
Head Style: hexagon
Material Document And Classification: sae gr 8 assn std single material response overall
Material: steel overall
Minimum Tensile Strength: 150000 pounds per square inch
Minimum Yield Strength: 120000 pounds per square inch
Nominal Thread Diameter: 0.250 inches
Nondefinitive Spec/Std Data: 2 type and 10p style and 8 grade
Surface Finish: 63.0 microinches threads
Surface Treatment Document And Classification: astm b633 ty 2 sc 3 assn std single treatment response overall
Surface Treatment
Thread Class: 2a
Thread Direction: right-hand
Thread Length: 0.750 inches minimum and 0.938 inches maximum
Thread Quantity Per Inch: 20
Thread Series Designator: unified national coarse (unc)
Width Between Flats: 0.428 inches minimum and 0.438 inches maximum

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AES01C250A50AWA91	The American Society of Mechanical Engineers
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Frequently Asked Questions

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.