B1821BH019C050N

View detailed technical data, stock status, and sourcing information for: B1821BH019C050N
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-616-5540

Item Name Code

18257

Assigment Date

02/20/2013 (13 years ago)

A nut, flat on top and bottom having 6 flat sides. For items which have internal tapered or straight (parallel) pipe threads, specific electrical conduit size designation, and which when installed, provide a method of tightening to lock the connection, see locknut, electrical conduit. See also locknut, tube fitting. For items having a thickness (or height) exceeding two times the width across the flats, use post, electrical-mechanical equipment. (when height or thickness and/or width across the flats is designated as a tolerance dimension, the maximum dimension will be used to determine compliance.)

0.500 inches nominal thread length, 0.500 inches nominal fastener length, hexagon head style, 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: 0.500 inches nominal
Fastener Length: 0.500 inches nominal
Head Style: hexagon
Head Height: 0.105 inches minimum and 0.120 inches maximum
Width Between Flats: 0.305 inches minimum and 0.312 inches maximum
End Item Identification: tank, m1 abrams family of vehicles (fov)
Nominal Thread Diameter: 0.190 inches
Thread Quantity Per Inch: 24
Part Name Assigned By Controlling Agency: screw, cap, hexagon head
Material: steel overall
Material Document And Classification: sae j429 grade 8 assn std single material response or astm a354 grade bd assn std single material response overall
Surface Treatment: zinc and chromate overall
Thread Series Designator: unc

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
B1821BH019C050N	Hexagon Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-01-616-5540?

The FSCG of the NSN 5305-01-616-5540 is 5305

Does the NSN 5305-01-616-5540 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-616-5540 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 5305-01-616-5540 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-616-5540 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 5305-01-616-5540 was assigned to the Federal Catalog?

It was assigned 13 years ago, on Wed, Feb 20, 2013