5305-01-616-5540

Find complete technical information, availability, and procurement data for: 5305-01-616-5540
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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.)

hexagon head style, 2a thread class, 0.500 inches nominal thread length, right-hand thread direction, 0.500 inches nominal fastener 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: 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