B1821BH056C125N

View detailed technical data, stock status, and sourcing information for: B1821BH056C125N
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-00-716-7356

Item Name Code

18257

Assigment Date

01/01/1960 (66 years ago)

2a thread class, 0.980 inches minimum and 1.250 inches maximum thread length, hexagon head style, 1.188 inches minimum and 1.250 inches maximum fastener length, 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: 0.980 inches minimum and 1.250 inches maximum
Fastener Length: 1.188 inches minimum and 1.250 inches maximum
Head Style: hexagon
Head Height: 0.348 inches minimum and 0.371 inches maximum
Width Between Flats: 0.798 inches minimum and 0.812 inches maximum
Nominal Thread Diameter: 0.562 inches
Thread Quantity Per Inch: 12
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: 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Below is a list of NSNs that have been officially superseded by this NSN: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
5305-00-285-1454	No Name Available	08/01/1980
5305-01-069-5235	No Name Available	10/01/1984

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
5305007167356	Hexagon Head Cap Screw
82-2085-0125	Hexagon Head Cap Screw
AES01C562A25AW9A91	Hexagon Head Cap Screw
B1821BH056C125N	Hexagon Head Cap Screw
MS90728-136	Hexagon Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-00-716-7356?

The FSCG of the NSN 5305-00-716-7356 is 5305

Does the NSN 5305-00-716-7356 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-00-716-7356 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 5305-00-716-7356 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-00-716-7356 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 5305-00-716-7356 was assigned to the Federal Catalog?

It was assigned 66 years ago, on Fri, Jan 1, 1960