B1821BH050C275N

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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-00-071-2074

Item Name Code

18257

Assigment Date

01/01/1960 (66 years ago)

An externally threaded fastener designed for insertion into holes in assembled parts, for mating with a preformed internal thread and for tightening or releasing by torquing the head. The threaded and unthreaded portions are both of the same nominal diameter of 0.190 inch (5 mm) or larger. Head dimensions and sizes of threaded and unthreaded portions shall conform to internationally recognized fastener standards. The thread length being the controlled dimension, the grip length is not specified. A locking feature may be incorporated in the design of the head or threads. The head is not designed to be held or driven with an inserted driver or by the thumb and fingers. Excludes:bolt,machine; bolt,externally relieved body; bolt,internal wrenching; and screw,cap,socket head.

5305-00-071-2074, hexagon head cap screw

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5305-00-018-6656	No Name Available	02/01/1980
5305-00-021-7068	No Name Available	02/05/2008
5305-00-141-7578	No Name Available	05/20/1973
5305-00-354-0843	No Name Available	03/25/1987
5305-00-421-9344	No Name Available	05/01/1984
5305-00-530-9301	Hexagon Head Cap Screw	07/01/2025
5305-00-637-6983	Hexagon Head Cap Screw	07/01/2025

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
0014772	Hexagon Head Cap Screw
0400149	Hexagon Head Cap Screw
10383831	Hexagon Head Cap Screw
1129E01 ITEM 186	Hexagon Head Cap Screw
145-543-94118	Hexagon Head Cap Screw
179892	Hexagon Head Cap Screw
1D41423-003	Hexagon Head Cap Screw
404426	Hexagon Head Cap Screw
5305000712074	Hexagon Head Cap Screw
5305PL0780993	Hexagon Head Cap Screw
8552A	Hexagon Head Cap Screw
B1821AH050C275N	Hexagon Head Cap Screw
B1821BH050C275N	Hexagon Head Cap Screw
D301293 FIND 4	Hexagon Head Cap Screw
ESP-B-2.121-PP	Hexagon Head Cap Screw
MS90728-118	Hexagon Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-00-071-2074?

The FSCG of the NSN 5305-00-071-2074 is 5305

Does the NSN 5305-00-071-2074 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-00-071-2074 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 5305-00-071-2074 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-00-071-2074 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 5305-00-071-2074 was assigned to the Federal Catalog?

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