B1821BH075F375N

View detailed technical data, stock status, and sourcing information for: B1821BH075F375N
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-00-947-2309

Item Name Code

18257

Assigment Date

03/30/1966 (60 years ago)

A microphone which depends for its operation upon variations in reluctance of a magnetic circuit.

hexagon head style, 1.750 inches minimum thread length, 3.656 inches minimum and 3.750 inches maximum fastener length, 2a thread class, right-hand thread direction

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: 1.750 inches minimum
Fastener Length: 3.656 inches minimum and 3.750 inches maximum
Head Style: hexagon
Head Height: 0.455 inches minimum and 0.483 inches maximum
Width Between Flats: 1.100 inches minimum and 1.125 inches maximum
Nominal Thread Diameter: 0.750 inches
Thread Quantity Per Inch: 16
Minimum Tensile Strength: 150000 pounds per square inch
Hardness Rating: 32.0 rockwell c minimum and 38.0 rockwell c maximum overall
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: unf
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Below is a list of NSNs that have been officially superseded by this NSN: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
5305-00-022-3759	No Name Available	02/01/1980
5305-00-022-3832	No Name Available	02/01/1980
5305-00-057-1104	No Name Available	06/01/1980
5305-00-530-9456	No Name Available	01/01/1983
5305-00-727-8824	No Name Available	04/01/1990

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
5305009472309	Hexagon Head Cap Screw
B1821BH075F375N	Hexagon Head Cap Screw
GE3S27916200N9	Hexagon Head Cap Screw
MS90726-194	Hexagon Head Cap Screw
MS90727-194	Hexagon Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-00-947-2309?

The FSCG of the NSN 5305-00-947-2309 is 5305

Does the NSN 5305-00-947-2309 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-00-947-2309 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 5305-00-947-2309 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-00-947-2309 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 5305-00-947-2309 was assigned to the Federal Catalog?

It was assigned 60 years ago, on Wed, Mar 30, 1966