TC4321

View detailed technical data, stock status, and sourcing information for: TC4321
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-011-2178

Item Name Code

06657

Assigment Date

10/20/1975 (50 years ago)

right-hand thread direction, hexagon head style, 0.500 inches nominal fastener length, 0.438 inches minimum and 0.500 inches maximum thread length, 2a thread class

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: 0.438 inches minimum and 0.500 inches maximum
Fastener Length: 0.500 inches nominal
Head Style: hexagon
Head Height: 0.096 inches minimum and 0.110 inches maximum
Width Between Flats: 0.244 inches minimum and 0.250 inches maximum
Nominal Thread Diameter: 0.164 inches
Thread Quantity Per Inch: 32
Screw Material: steel corrosion resisting
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
TC4321	Machine Screw

FAQs

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

What is the FSCG of the NSN 5305-01-011-2178?

The FSCG of the NSN 5305-01-011-2178 is 5305

Does the NSN 5305-01-011-2178 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-011-2178 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 5305-01-011-2178 contain precious materials?

Precious metal content is unknown

Does NSN 5305-01-011-2178 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 5305-01-011-2178 was assigned to the Federal Catalog?

It was assigned 50 years ago, on Mon, Oct 20, 1975