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B1821BH050C300N

View detailed technical data, stock status, and sourcing information for: B1821BH050C300N

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B1821BH050C300N
Federal Supply Group
Hardware and Abrasives
Federal Supply Classification
5305 Screws
National Stock Number
5305-00-071-2075
Item Name Code
18257
Assigment Date
01/01/1960 (66 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.

hexagon head style, right-hand thread direction, 2.906 inches minimum and 3.000 inches maximum fastener length, 2a thread class, 1.250 inches minimum and 1.442 inches maximum thread 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
1.250 inches minimum and 1.442 inches maximum
Fastener Length
2.906 inches minimum and 3.000 inches maximum
Head Style
hexagon
Head Height
0.302 inches minimum and 0.323 inches maximum
Width Between Flats
0.736 inches minimum and 0.750 inches maximum
End Item Identification
multiple launch rocket system (mlrs); a4 bradley fighting vehicle; a3 bradley fighting vehicle
Nominal Thread Diameter
0.500 inches
Thread Quantity Per Inch
13
Minimum Tensile Strength
150000 pounds per square inch
Surface Finish
63.0 microinches threads
Material
steel overall
Material Document And Classification
saej429 grade 8 assn std single material response or astma354 grade bd assn std single material response overall
Surface Treatment
cadmium and chromate overall
Surface Treatment Document And Classification
qq-p-416,ty2cl3 fed spec 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
5305-00-160-9271 No Name Available 05/20/1973
5305-00-285-1452 No Name Available 09/24/1996
5305-01-162-9720 No Name Available 02/01/1985
5305-01-228-3289 No Name Available 09/01/1994
5305-01-284-0849 No Name Available 09/01/1990

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:

Part Number Name
197-430 Hexagon Head Cap Screw
1DD788 Hexagon Head Cap Screw
5305000712075 Hexagon Head Cap Screw
5305PL0780971 Hexagon Head Cap Screw
5315-424F Hexagon Head Cap Screw
701-4711389 PIECE 39 Hexagon Head Cap Screw
B1821BH050C300N Hexagon Head Cap Screw
MS35299-119 Hexagon Head Cap Screw
MS90728-119 Hexagon Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-00-071-2075?
The FSCG of the NSN 5305-00-071-2075 is 5305
Does the NSN 5305-00-071-2075 have a Schedule B code assigned?
Yes, the Schedule B code is 7318152000
Does NSN 5305-00-071-2075 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 5305-00-071-2075 contain precious materials?
Item does not contain precious metal.
Does NSN 5305-00-071-2075 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 5305-00-071-2075 was assigned to the Federal Catalog?
It was assigned 66 years ago, on Fri, Jan 1, 1960

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