B1821BH056F250N

View detailed technical data, stock status, and sourcing information for: B1821BH056F250N
DODParts.com distributes related products varnishes dopes paints, aircraft parts and consumables, electrical parts, fittings and other components for the aerospace and defense industries. Submit the short price quote form for part B1821BH056F250N to receive an up to date pricing and availability quote by email.

Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-00-725-0147

Item Name Code

18257

Assigment Date

01/01/1961 (65 years ago)

2a thread class, 2.500 inches nominal fastener length, 1.375 inches minimum and 1.563 inches maximum thread length, hexagon head style, 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: 1.375 inches minimum and 1.563 inches maximum
Fastener Length: 2.500 inches nominal
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: 18
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
Material: steel overall
Material Document And Classification: sae gr 8 assn std single material response overall
Surface Treatment: cadmium and chromate overall
Surface Treatment Document And Classification: qq-p-416,ty 2,cl 3 fed spec single treatment response overall
Thread Series Designator: unf

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5305-01-275-3289	No Name Available	06/01/1991

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
199-525	Hexagon Head Cap Screw
862-525	Hexagon Head Cap Screw
B1821BH056F250N	Hexagon Head Cap Screw
MS90727-142	Hexagon Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-00-725-0147?

The FSCG of the NSN 5305-00-725-0147 is 5305

Does the NSN 5305-00-725-0147 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-00-725-0147 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 5305-00-725-0147 contain precious materials?

Precious metal content is unknown

Does NSN 5305-00-725-0147 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 5305-00-725-0147 was assigned to the Federal Catalog?

It was assigned 65 years ago, on Sun, Jan 1, 1961