NSC018443

View detailed technical data, stock status, and sourcing information for: NSC018443
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-00-724-7223

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.

1.500 inches minimum and 1.727 inches maximum thread length, hexagon head style, 2.156 inches minimum and 2.250 inches maximum fastener length, 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: 1.500 inches minimum and 1.727 inches maximum
Fastener Length: 2.156 inches minimum and 2.250 inches maximum
Head Style: hexagon
Head Height: 0.378 inches minimum and 0.403 inches maximum
Width Between Flats: 0.922 inches minimum and 0.938 inches maximum
End Item Identification: mrap-rg-33 and rg-33 auv; multiple launch rocket system (mlrs); a4 bradley fighting vehicle; a3 bradley fighting vehicle
Nominal Thread Diameter: 0.625 inches
Thread Quantity Per Inch: 11
Minimum Tensile Strength: 150000 pounds per square inch
Hardness Rating: 32.0 rockwell c minimum and 38.0 rockwell c maximum overall
Surface Finish: 63.0 microinches threads
Material: steel overall
Material Document And Classification: sae j429 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
5305-00-022-3437	No Name Available	09/21/1966
5305-00-022-3514	No Name Available	01/01/1983
5305-00-042-8694	Hexagon Head Cap Screw	07/01/2025
5305-00-206-8803	No Name Available	12/09/1998
5305-01-034-1764	No Name Available	01/01/1991
5305-01-055-3793	No Name Available	11/01/1995
5306-01-176-7671	No Name Available	11/01/2019
5305-01-244-3992	No Name Available	11/01/1989

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
000197X0612	Hexagon Head Cap Screw
000197X0719	Hexagon Head Cap Screw
11600-1-T13-7	Hexagon Head Cap Screw
1S1625	Hexagon Head Cap Screw
2076-4343-001	Hexagon Head Cap Screw
23-09444-225	Hexagon Head Cap Screw
5305007247223	Hexagon Head Cap Screw
B1821BH063C225L	Hexagon Head Cap Screw
B1821BH063C225N	Hexagon Head Cap Screw
MS90728-165	Hexagon Head Cap Screw
NSC018443	Hexagon Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-00-724-7223?

The FSCG of the NSN 5305-00-724-7223 is 5305

Does the NSN 5305-00-724-7223 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-00-724-7223 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 5305-00-724-7223 contain precious materials?

Precious metal content is unknown

Does NSN 5305-00-724-7223 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 5305-00-724-7223 was assigned to the Federal Catalog?

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